Dissertations / Theses on the topic 'Automotive design'
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Gomez, Rafael. "Experience design and automotive design." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16172/1/Rafael_Gomez_Thesis.pdf.
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This thesis centres on experience design and automotive design. The aim is to investigate the emotional experience of the driving activity. The research question driving the study is: "How can experience design influence the driving activity?" Experience design proposes to explore emotional aspects of interactions in context. A model of the human-product-environment relationship, using activity theory as its foundation, is presented. The model is used to situate the overall experience of driving.
An experiment exploring the overall emotional experience in real driving situations was conducted. Participants were required to drive around a specified route while performing particular tasks with the vehicle interface. A data triangulation approach was employed involving interviews, think-aloud protocols and observations.
Findings indicate that context together with the emotional state of the driver before driving impacts the overall emotional experience. Positive emotional states before driving with no interaction challenges in high-traffic contexts generated neutral overall experiences. However, positive emotional states before driving with interaction challenges in high-traffic contexts generated negative overall experiences. Negative emotional states before driving combined with interaction challenges in high-traffic contexts generated
positive emotional experiences. It appears that positive emotions associated with overcoming challenging interactions in high-traffic contexts reflect positively on the overall experience. Emotions elicited in low and mediumtraffic contexts did not affect the overall experience. Another finding suggests that extended visual interaction with interface in high-traffic context generates negative emotions.
It is proposed that vehicle interfaces should adapt appropriately to their surrounding context to support positive (and avoid negative) emotional experiences. In low and medium-traffic contexts interfaces may encourage interactions. In high-traffic contexts, if the driver is in a positive emotional state before driving interfaces may discourage challenging interactions. If the driver is in a negative emotional state before driving the interface may encourage challenging interactions.
In conclusion, this study proposes the application of current and upcoming technologies for future automotive interiors to enhance positive (and reduce negative) emotional experiences within the driving activity.
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Gomez, Rafael. "Experience design and automotive design." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16172/.
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This thesis centres on experience design and automotive design. The aim is to investigate the emotional experience of the driving activity. The research question driving the study is: "How can experience design influence the driving activity?" Experience design proposes to explore emotional aspects of interactions in context. A model of the human-product-environment relationship, using activity theory as its foundation, is presented. The model is used to situate the overall experience of driving. An experiment exploring the overall emotional experience in real driving situations was conducted. Participants were required to drive around a specified route while performing particular tasks with the vehicle interface. A data triangulation approach was employed involving interviews, think-aloud protocols and observations. Findings indicate that context together with the emotional state of the driver before driving impacts the overall emotional experience. Positive emotional states before driving with no interaction challenges in high-traffic contexts generated neutral overall experiences. However, positive emotional states before driving with interaction challenges in high-traffic contexts generated negative overall experiences. Negative emotional states before driving combined with interaction challenges in high-traffic contexts generated positive emotional experiences. It appears that positive emotions associated with overcoming challenging interactions in high-traffic contexts reflect positively on the overall experience. Emotions elicited in low and mediumtraffic contexts did not affect the overall experience. Another finding suggests that extended visual interaction with interface in high-traffic context generates negative emotions. It is proposed that vehicle interfaces should adapt appropriately to their surrounding context to support positive (and avoid negative) emotional experiences. In low and medium-traffic contexts interfaces may encourage interactions. In high-traffic contexts, if the driver is in a positive emotional state before driving interfaces may discourage challenging interactions. If the driver is in a negative emotional state before driving the interface may encourage challenging interactions. In conclusion, this study proposes the application of current and upcoming technologies for future automotive interiors to enhance positive (and reduce negative) emotional experiences within the driving activity.
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Islas, Munoz Juan. "Automotive design aesthetics: Harmony and its influence in semantic perception." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1367941397.
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Nova, Sergio D\'Oliveira Casa. "Contribuição a metodologia de projeto e concepção automotiva." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/3/3149/tde-12042017-085530/.
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O objetivo deste trabalho é fazer uma contribuição ao Método de Desenvolvimento Automotivo, especificamente sobre a concepção de novos produtos automotivos, por meio de uma análise crítica a partir de uma hipótese proposta de método de um estudo de caso. O estudo de temas pertinentes procurou incluir temas multidisciplinares ligados à Estética do Produto Industrial e à sua História, ao Gerenciamento de Projetos, a Metodologia de Estímulo à Criatividade, a Ergonomia e Fatores Humanos. O Método Proposto por hipótese, baseado na experiência do autor, incluiu de forma sintética quatro fases de desenvolvimento: a pesquisa, a proposição de alternativas, a definição da melhor alternativa e a execução. O estudo de caso está baseado em uma oportunidade de conceber um semi-reboque autoportante para produtos perigosos, o que permitiu que parte do método pudesse ser testada em sua eficiência. As conclusões do trabalho revelaram pontos em que a aplicação do método hipotético mostrou-se satisfatória e outros apresentou oportunidades de melhoria bem como de continuidade da pesquisa.The contents on this work it is a contribution to Development automotive Method, specific to new products concepts, through a critical investigation. The theme study case was covered multi-disciplines topics such as: Product Esthetics and History, Project Management, Methods & Creativity stimulus and Human Factors. By the hypotheses the method proposal contemplated synthetic four phase development, Research, Alternative Solutions, Definition of he Solution and the Execution solution. The base study is supported by the opportunity to design a new product: No chassis truck trailer, to transport danger liquid materials, also to try this method for efficiency. The conclusions showed several points for hypothetical method applications with a satisfactory results, it is encouraging to continue this research.
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Addullah, Mohamad Hariri. "Automotive facades : Design, image and identity." Thesis, Birmingham City University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485978.
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This research examined the significance of automotive facade particularly car facade and its relationship to design, image and identity. This research is based on the assumption that the car exterior design delivers both, product character and messages which influence the consumer perceptions. The car fayade normally reflects the company image and identity, the profile (side) section shows the functions either saloon, convertible or estate, while the rear section usually becomes a follower to be incorporated within the overall design. To make a comparison to humans, a car fayade resembles the face where normally the reflections on personality, character and expression ofthe person are experienced. The test revealed a relationship between car fayade and human face that in tum suggested that both are operated within the context of common themes and manners. Interpretation of the research findings also contextualised the anthropomorphic and zoomorphic references in car fayades.
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Knobel, Martin. "Experience design in the automotive context." Diss., Ludwig-Maximilians-Universität München, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-162239.
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Various experiences in modern life are in one or another form connected to car rides. However, the automotive industry so far only regards driving as the only relevant experience, a perspective which consequently dominates the field of interaction design for vehicles. Yet, the car is an exceptionally potential space for experiences that go beyond the actual driving task, such as intensive conversation or exploration. So how is it possible to design for special situations like those, and thereby create positive emotions for drivers and passengers alike?
To meet this objective it is necessary to use the human, instead of the function, as the starting point. The design approach of "Experience Design" defined by Marc Hassenzahl provides exactly this focus on the human and concentrates first on their experience. Here, positive emotions are specifically created through the fulfilling of psychological needs.
Experience Design enables the precise analysis of experiences in advance of the design by clarifying with the help of psychological needs why a considered experience is viewed as positive. Furthermore, Experience Design supports the composition of an Experience Story, which is attuned to the desired psychological needs and which defines the experience to be designed. This experience can then gradually be translated into an interaction design. Finally, with the help of technology, the created experience can be lived through in situ by participants and later analysed. Based upon this design approach and by means of methods drawn from the fields of human machine-interaction as well as psychology, four studies on the design of experiences through interaction products in the automotive domain are presented. The created experiences are divided into "Experiences at Group Drives in the Car for Pleasure" and "Experiences While Commuting Alone". These experiences take place in different scenarios, namely: in a motorcade, an exploratory cruise, a commuting ride, and while driving considerately. Out of the practical application of Experience Design in these studies a best practice for the use of the employed methods is developed. Thereby, this work brings to light the possibilities for using technology to design experiences that go beyond the mere act of driving. Furthermore, the challenges of designing experiences in usability-focused environments are shown. Thus, this work is aimed at offering inspiration to designers and researchers particularly in the automotive domain for designing experiences and thereby furthering innovation.Viele unterschiedliche Erlebnisse im Leben sind auf die eine oder andere Weise mit Autofahrten verbunden. Jedoch wird in der Automobilindustrie das Erlebnis im Auto bisher gleichgestellt mit dem Fahrerlebnis selbst, was folglich auch das Interaktionsdesign in Fahrzeugen bestimmt. Dahingegen bietet gerade das Auto Raum für Erlebnisse, die über die eigentliche Fahraufgabe hinausgehen, wie intensive Gespräche oder Entdeckungen. Wie also lassen sich derartige Erlebnisse gestalten, und wie kann dies auf eine Art und Weise geschehen, dass bei FahrerIn als auch Mitfahrenden positive Emotionen ausgelöst werden? Zu diesem Ziel sollte beim Menschen und nicht bei der Technologie angesetzt werden. Der von Marc Hassenzahl aufgestellte Designansatz „Experience Design“ bietet eben diesen Fokus auf den Menschen und konzentriert sich auf das Gestalten von deren Erlebnissen. Hierbei werden durch das Erfüllen psychologischer Bedürfnisse gezielt positive Emotionen erzeugt. Experience Design ermöglicht, Erlebnisse im Vorfeld der Gestaltung genauer zu analysieren, indem anhand psychologischer Bedürfnisse geklärt wird, warum ein betreffende Erlebnis positiv empfunden wird. Weiterhin unterstützt Experience Design das Konzipieren einer Erlebnisgeschichte, welche auf die zu erfüllenden psychologischen Bedürfnisse ausgerichtet ist und das zu gestaltende Erlebnis definiert. Dieses Erlebnis lässt sich dann Schritt für Schritt in ein Interaktionsdesign übertragen. Schließlich kann das gestaltete Erlebnis von StudienteilnehmerInnen mithilfe der Technologie in situ durchlebt und analysiert werden. Aufbauend auf diesem Designansatz und mittels Methoden insbesondere aus den Bereichen Mensch-Maschine-Interaktion sowie Psychologie werden vier Studien der Gestaltung von Erlebnissen durch Interaktionsprodukte im automobilen Bereich vorgestellt. Die gestalteten Erlebnisse lassen sich untergliedern in Erlebnisse bei gemeinsamen Fahrten in unbekannten Gegenden sowie in Erlebnisse beim alleine Fahren auf bekannten Strecken. Sie finden in unterschiedlichen Szenarios statt, nämlich in einer Kolonnenfahrt, einer Entdeckungsreise, einer Pendelfahrt und im rücksichtsvollen Straßenverkehr. Aus der praktischen Anwendung von Experience Design in diesen Designstudien wird eine „Best Practice“ zur Verwendung der benutzten Methoden erstellt. Damit werden in dieser Arbeit Möglichkeiten aufgezeigt, wie über die Fahraufgabe hinausgehende Erlebnisse mithilfe von Technologie gestaltet werden können. Diskutiert werden weiterhin Herausforderungen des Gestaltens von Erlebnissen in Umfeldern, die auf Benutzbarkeit spezialisiert sind. So soll diese Arbeit Designer und Forscher insbesondere im automobilen Bereich dahingehend inspirieren, Erlebnisse zu gestalten und damit neue Wege für Innovationen zu finden.
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Long, Luohui. "Design-Oriented Translators for Automotive Joints." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/29316.
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A hierarchical approach is typically followed in design of consumer products. First, a manufacturer sets performance targets for the whole system according to customer surveys and benchmarking of competitors' products. Then, designers cascade these targets to the subsystems or the components using a very simplified model of the overall system. Then, they try to design the components so that they meet these targets. It is important to have efficient tools that check if a set of performance targets for a component corresponds to a feasible design and determine the dimensions and mass of this design.
This dissertation presents a methodology for developing two tools that link performance targets for a design to design variables that specify the geometry of the design. The first tool (called translator A) predicts the stiffness and mass of an automotive joint, whose geometry is specified, almost instantaneously. The second tool (called translator B) finds the most efficient, feasible design whose performance characteristics are close to given performance targets.
The development of the two translators involves the following steps. First, an automotive joint is parameterized. A set of physical parameters are identified that can completely describe the geometry of the joint. These parameters should be easily understood by designers. Then, a parametric model is created using a CAD program, such as Pro/Engineer or I-Deas. The parametric model can account for different types of construction, and includes relations for styling, packaging, and manufacturing constraints. A database is created for each joint using the results from finite element analysis of hundreds or thousands of joint designs. The elements of the database serve as examples for developing Translator A. Response surface polynomials and neural networks are used to develop translator A. Stepwise regression is used in this study to rank the design variables in terms of importance and to obtain the best regression model.
Translator B uses optimization to find the most efficient design. It analyzes a large number of designs efficiently using Translator A. The modified feasible direction method and sequential linear programming are used in developing translator B. The objective of translator B is to minimize the mass of the joint and the difference of the stiffness from a given target while satisfying styling, manufacturing and packaging constraints.
The methodologies for Translators A and B are applied to the B-pillar to rocker and A-pillar to roof rail joints. Translator B is demonstrated by redesigning two joints of actual cars. Translator B is validated by checking the performance and mass of the optimum designs using finite element analysis.
This study also compares neural networks and response surface polynomials. It shows that they are almost equally accurate when they are used in both analysis and design of joints.Ph. D.
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Domeij, Bäckryd Rebecka. "Multidisciplinary Design Optimization of Automotive Structures." Licentiate thesis, Linköpings universitet, Hållfasthetslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-89136.
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Multidisciplinary design optimization (MDO) can be used as an effective tool to improve the design of automotive structures. Large-scale MDO problems typically involve several groups who must work concurrently and autonomously for reasons of efficiency. When performing MDO, a large number of designs need to be rated. Detailed simulation models used to assess automotive design proposals are often computationally expensive to evaluate. A useful MDO process must distribute work to the groups involved and be computationally efficient. In this thesis, MDO methods are assessed in relation to the characteristics of automotive structural applications. Single-level optimization methods have a single optimizer, while multi-level optimization methods have a distributed optimization process. Collaborative optimization and analytical target cascading are possible choices of multi-level optimization methods for automotive structures. They distribute the design process, but are complex. One approach to handle the computationally demanding simulation models involves metamodel-based design optimization (MBDO), where metamodels are used as approximations of the detailed models during optimization studies. Metamodels can be created by individual groups prior to the optimization process, and therefore also offer a way of distributing work. A single-level optimization method in combination with metamodels is concluded to be the most straightforward way of implementing MDO into the development of automotive structures.
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Kimura, Silvio. "Interferências digitais nos modelos tridimensionais do design de automóveis." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/16/16134/tde-03072013-154541/.
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O sucesso na indústria automobilística está intrinsecamente associado à sua capacidade de apresentar rapidamente novos produtos ao mercado. Foram fundamentais para reduzir o tempo de desenvolvimento de novos veículos a utilização de sistemas de projeto auxiliado por computador, ou CAD, para substituir o modelamento tridimensional físico pelo digital. Buscamos inicialmente apresentar os aspectos históricos da produção industrial do automóvel no início do século XX para compor um panorama com os personagens e os fatos relevantes que influenciaram o processo de projeto de veículos. Destacamos a criação do Art & Color Section da GM porque foi neste estúdio que modelos de projeto representando a carroceria de automóveis foram construídos pela primeira vez utilizando clay industrial. Descrevemos o fluxo de trabalho do processo de projeto no design automotivo e investigamos adicionalmente as possíveis interferências dos programas de modelamento digital no desenvolvimento criativo de projetos de design de automóveis. Complementarmente, analisamos a influência das ferramentas digitais na formação dos futuros designers de automóveis, os futuros desenvolvimentos de interface dos programas CAD/CAS e o panorama atual dos principais programas utilizados no design industrial de automóveis.The ability to offer new products to the market is the key to success in auto industry. New vehicles are developed with Computer-Aided Design (CAD) programs, resulting in great development time reduction where digital models replaced traditional clay models. By researching historical facts about the auto industry production in early 20th century, this research focused on building a background where the design processes were developed, including relevant biography and facts about the people who created the modern car. We highlighted the creation of GM Art & Color Section due to its relation with the first use of car body models modeled with industrial clay. To find possible interferences caused by the use of digital modeling within the creative phase of car design processes, we described and analyzed the car design process workflow. Furthermore, we analyzed how digital tools can influence new designers education, looked for future CAD/CAS software interface development and an overview on the main high-end software for car design.
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Welford, John. "Automotive electric actuator modelling and design methodologies." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/automotive-electric-actuator-modelling-and-design-methodologies(7d35f730-f2e2-4517-ae02-a512e0ceef74).html.
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Electromechanical position actuation systems typically consist of an electric motor, driven by a set of power electronics, effecting output through a mechanical transmission. Whilst an optimal fully integrated actuator design from first principles could be considered, this is often not a cost-effective option. It is common to construct designs utilising commercially available subcomponents – the Cummins variable geometry turbocharging application detailed in this thesis provides a typical example. The design problem studied in this work is therefore one of meeting requirements through careful subcomponent selection. Electromagnetic, mechanical and thermal equations are developed to model actuator performance. These may be parameterised based on datasheet values or sample component test data. A set of tests is proposed to extract the required information from example motors; this is demonstrated using five different sample motors. Validation is performed to assess the accuracy of the parameterised models for the sample motors. A process is then developed to use the validated models to assess actuator design performance against a set of requirements. A key contribution of this work is the derivation of a computationally efficient motor model, which may be used with an integrated low-order lumped-parameter thermal model to investigate actuator performance at elevated temperatures – since this is often the limiting factor in machine rating. This allows a user to select the appropriate modelling fidelity, allowing accuracy to be traded against simulation performance. The overall process is demonstrated through the assessment of a full actuator design. The models and design process developed in this work allow a candidate actuator design to be appraised through calculations and simulations at a range of different fidelities, and using only a minimal set of subcomponent parameters. This allows designs that cannot meet the performance requirements to be quickly identified and excluded. Satisfactory designs may then be modelled and evaluated in detail to optimise other requirements, such as cost or volume.
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Hellmann, Chris. "A prototype design for an automotive facility." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/23944.
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Deo, Hrishikesh V. "Axiomatic design of customizable automotive suspension systems." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/38698.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, February 2007.Includes bibliographical references (p. 195-201).
The design of existing suspension systems typically involves a compromise solution for the conflicting requirements of comfort and handling. For instance, cars need a soft suspension for better comfort, whereas a stiff suspension leads to better handling. Cars need high ground clearance on rough terrain, whereas a low center of gravity (CG) height is desired for swift cornering and dynamic stability at high speeds. It is advantageous to have low damping for low force transmission to vehicle frame, whereas high damping is desired for fast decay of oscillations. To eliminate these trade-offs, a novel design for a customizable automotive suspension system with independent control of stiffness, damping and ride-height is proposed in this thesis. This system is capable of providing the desired performance depending on user preference, vehicle speed, road conditions and maneuvering inputs. The design, fabrication and control of the customizable suspension prototype are discussed. The application of variable stiffness and variable ride-height suspension system to achieve improved vehicle dynamics is studied. Application to control of vehicle dynamics parameters required bandwidth and power input beyond the capability of the first prototype.
(cont.) To eliminate the bandwidth restrictions of the prototype, a variable-stiffness pneumatic suspension system capable of instantaneous stiffness change with essentially no power input and no ride-height change, is developed. This is done by supporting the vehicle on air springs and connecting each air spring volume to multiple auxiliary volumes through On-Off valves. By adequately choosing N unequal auxiliary volumes, this system can achieve 2N stiffness settings. This suspension has been incorporated in a car suspension. The design, fabrication, and testing of the suspension system are reported in this thesis. A detailed frequency-domain model for the air-spring with auxiliary volumes is developed. Based on this modeling and testing, the performance limits and practical applicability of this system are discussed. The proposed variable stiffness isolator is capable of instantaneous stiffness change with no power input and no dimension change; moreover the isolator is inexpensive, robust and light. As a result, it is readily applicable to several other vibration isolation applications with conflicting stiffness requirements (such as a precision motion stages) or time-varying stiffness requirements (such as prosthetic limbs) and these applications are discussed.
by Hrishikesh V. Deo.
Ph.D.
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Fonte, William Giacomo. "An automotive lower back seat system design." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/32140.
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Ziegler, Ronald J. 1965. "Complexity reduction in automotive design and development." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/34811.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2005.Includes bibliographical references (p. 117-118).
Automobiles are complex products. High product complexity drives high levels of design and process complexity and complicatedness. This thesis attempts to reduce complicatedness in the automotive vehicle design and development process utilizing systems engineering tools including the design structure matrix (DSM) and axiomatic design concepts. The title of the thesis is a misnomer; complexity in automotive design and development is not "going away", but through the use of system engineering tools it is believed that the complicatedness of automotive design can be reduced and the consequences of decisions can be better understood at earlier stages in product development. A holistic view of the complexity and complicatedness challenge is considered, in order to identify high leverage points and generic insights that can be carried forward to future product development efforts. The goal is to translate generalized learning and systems thinking to the application of systems tools and processes that enable an understanding of complexity, in order to design better operating policies that guide positive change in systems. The analysis starts with considerations across the automotive enterprise, then the focus sharpens to the early stages of the product development process. Then a more detailed level of abstraction is considered when the automotive chassis tuning process and the interactions between the vehicle dynamics and noise and vibration (NVH) attributes are considered. The automotive rear suspension design is used to illustrate the concepts at the detailed level of abstraction. A rear suspension system case study is included, as it met a number of the challenges inherent in large-scale systems; it provides the elements of a technical challenge
(cont.) and the integration of business and engineering issues, while encompassing detailed and broad issues that across different parts of the organization. The analysis demonstrates that the complicatedness of systems can be reduced and complexity can be managed through the use of the design structure matrix and axiomatic design concepts. Recommendations are made to foster improved decision-making that will result in improved automobiles and include the following: start simply with the application of these concepts on the critical few interactions that drive system performance, manage information explicitly, account and provision for risks in the development process, and reduce complexity and complicatedness through reuse.
by Ronald J. Ziegler.
S.M.
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Andersson, Johan, and Adam Schelander. "Design and verification of automotive power supply." Thesis, Linköpings universitet, Fysik och elektroteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-150147.
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In the current and next generation automotive telematic platforms, high demands are put on high efficiency power supplies. This thesis investigates different switch mode power converter solutions that operates with high efficiency for both low and high power loads. A market survey was conducted alongside meetings with ACTIA Nordic and their subcontractors. Three solutions from the market survey were selected for further investigation. One solution from the investigation was selected and implemented as a demonstration platform for further testing. The result shows a full test sequence for the designed power supply solution.
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Todorov, Vassil. "Automotive embedded software design using formal methods." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASG026.
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La part croissante des fonctions d'assistance à la conduite, leur criticité, ainsi que la perspective d'une certification de ces fonctions, rendent nécessaire leur vérification et leur validation avec un niveau d'exigence que le test seul ne peut assurer.Depuis quelques années déjà d’autres domaines comme l’aéronautique ou le ferroviaire sont soumis à des contextes équivalents. Pour répondre à certaines contraintes ils ont localement mis en place des méthodes formelles. Nous nous intéressons aux motivations et aux critères qui ont conduit à l’utilisation des méthodes formelles dans ces domaines afin de les transposer sur des scénarios automobiles et identifier le périmètre potentiel d'application.Dans cette thèse, nous présentons nos études de cas et proposons des méthodologies pour l'usage de méthodes formelles par des ingénieurs non-experts. Le model checking inductif pour un processus de développement utilisant des modèles, l'interprétation abstraite pour démontrer l'absence d'erreurs d'exécution du code et la preuve déductive pour des cas de fonctions critiques de librairie.Enfin, nous proposons de nouveaux algorithmes pour résoudre les problèmes identifiés lors de nos expérimentations. Il s'agit d'une part d'un générateur d'invariants et d'une méthode utilisant la sémantique des données pour traiter efficacement des propriétés comportant du temps long, et d'autre part d'un algorithme efficace pour mesurer la couverture du modèle par les propriétés en utilisant des techniques de mutationThe growing share of driver assistance functions, their criticality, as well as the prospect of certification of these functions, make their verification and validation necessary with a level of requirement that testing alone cannot ensure. For several years now, other industries such as aeronautics and railways have been subject to equivalent contexts. To respond to certain constraints, they have locally implemented formal methods. We are interested in the motivations and criteria that led to the use of formal methods in these industries in order to transpose them to automotive scenarios and identify the potential scope of application.In this thesis, we present our case studies and propose methodologies for the use of formal methods by non-expert engineers. Inductive model checking for a model-driven development process, abstract interpretation to demonstrate the absence of run-time errors in the code and deductive proof for critical library functions.Finally, we propose new algorithms to solve the problems identified during our experiments. These are, firstly, an invariant generator and a method using the semantics of data to process properties involving long-running timers in an efficient way, and secondly, an efficient algorithm to measure the coverage of the model by the properties using mutation techniques
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Pal, Avishek. "Scalable design synthesis for automotive assembly system." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/74186/.
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Frequent product model changes have become a characteristic feature in new product development and modern manufacturing. This has triggered a number of requirements such as shortening new product development time and production ramp-up time with simultaneous reduction of avoidable engineering changes and overall vehicle development cost. One of the most significant challenges when reducing new model development lead time is the large number of engineering changes, that are triggered by failures during production ramp-up stage but are unseen during design. In order to reduce engineering changes during ramp-up stage and also increase Right-First-Time development rate, there is a critical demand for improving quality of integrated product and production system design solutions. Currently, this is obtained by carrying out design synthesis which focuses on design optimization driven by computer simulation and/or physical experimentation. The design synthesis depends on the quality of the used surrogate models, which integrate critical product variables, (also known as Key Product Characteristics (KPCs)), with key process variables (Key Control Characteristics (KCCs)). However, a major limitation of currently existing surrogate models, used in design synthesis, is that these simply approximate underlying KPC-KCC relations with any deviation between the actual and predicted KPC assumed to be a simple random error with constant variance. Such an assumption raises major challenges in obtaining accurate design solutions for a number of manufacturing processes when: (1) KPCs are deterministic and non-linearity is due to interactions between process variables (KCCs) as is frequently the case in fixture design for assembly processes with compliant parts; (2) KPC stochasticity is either independent of (homo-skedastic) or dependent on (hetero-skedastic) on process variables (KCCs) and there is lack of physics-based models to confirm these behaviour; as can be commonly observed in case of laser joining processes used for automotive sheet metal parts; and, (3) there are large number of KCCs potentially affecting a KPC and dimensionality reduction is required to identify few critical KCCs as commonly required for diagnosis and design adjustment for unwanted dimensional variations of the KPC. This thesis proposes a generic Scalable Design Synthesis framework which involves the development of novel surrogate models which can address a varying scale of the KPC-KCC interrelations as indicated in the aforementioned three challenges. The proposed Scalable Design Synthesis framework is developed through three interlinked approaches addressing each aforementioned challenge, respectively: i. Scalable surrogate model development for deterministic non-linearity of KPCs characterized by varying number of local maximas and minimas. Application: Fixture layout optimization for assembly processes with compliant parts. This is accomplished in this thesis via (1) Greedy Polynomial Kriging (GPK), a novel approach for developing Kriging-based surrogate models for deterministic KPCs focusing on maximization of predictive accuracy on unseen test samples; and, (2) Optimal Multi Response Adaptive Sampling (OMRAS) a novel method of accelerating the convergence of multiple surrogate models to desired accuracy levels using the same training sample of KCCs. GPK surrogate models are then used for fixture layout optimization for assembly with multiple sheet metal parts. ii. Scalable surrogate model development for stochasticity characterized by unknown homo-skedastic or hetero-skedastic behaviour of KPCs. Application: In-process laser joining processes monitoring and in-process joint quality evaluation. Scalable surrogate model-driven joining process parameters selection, addressing stochasticity in KPC-KCC relations, is developed. A generic surrogate modelling methodology is proposed to identify and characterize underlying homo- and hetero-skedastic behaviour in KPCs from experimental data. This is achieved by (1) identifying a Polynomial Feature Selection (PFS) driven best-fitting linear model of the KPC; (2) detection of hetero-skedasticity in the linear model; and, (3) enhancement of the linear model upon identification of hetero-skedasticity. The proposed surrogate models estimate the joining KPCs such as weld penetration, weld seam width etc. in Remote Laser Welding (RLW) and their variance as a function of KCCs such as gap between welded parts, welding speed etc. in RLW. This information is then used to identify process window in KCC design space and compute joining process acceptance rate. iii. Scalable surrogate model development for high dimensionality of KCCs. Application: Corrective action of product failures triggered by dimensional variations in KPCs. Scalable surrogate model-driven corrective action is proposed to address efficient diagnosis and design adjustment of unwanted dimensional variations in KPCs. This is realized via (1) PFS to address high dimensionality of KCCs and identify a few critical ones closely related to the KPC of interest; and (2) surrogate modelling of the KPC in terms of the few critical KCCs identified by PFS; and, (3) two-step design adjustment of KCCs which applies the surrogate models to determine optimal nominal adjustment and tolerance reallocation of the critical KCCs to minimize production of faulty dimensions. All the aforementioned methodologies are demonstrated through the use of industrial case studies. Comparison of the proposed methods with design synthesis existing for the applications discussed in this thesis, indicate that scalable surrogate models can be utilized as key enablers to conduct accurate design optimization with minimal understanding of the underlying complex KPC-KCC relations by the user. The proposed surrogate model-based Scalable Design Synthesis framework is expected to leverage and complement existing computer simulation/physical experimentation methods to develop fast and accurate solutions for integrated product and production system design.
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Fang, Xitian 1963, and Deming 1967 Wan. "Integrated automotive exhaust engineering : uncertainty management." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34631.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2006.Includes bibliographical references (p. 104-108).
The global automotive industry has entered a stagnating period. Automotive OEMs and their tier suppliers are struggling for business growth. One of the most important strategies is to improve the engineering efficiency in the product development process. The engineering uncertainties have been identified as the main obstacles in the Lean Engineering practices. This study will be focused on the engineering development process of ArvinMeritor Emission Technologies. The lean engineering principles and techniques are applied to the current product development process. The Value Stream Mapping and Analysis method is used to identify the information flow inside the current engineering process. Based on the value stream map, the uncertainties at various development stages in the process are identified. The Design Structure Matrix is used to identify any unplanned design iteration, which results in lower engineering efficiency. The House of Quality is used to prioritize the importance of the iterations. The suggested excel program can effectively evaluate the effect of task duration, probability, impact and learning curve assumption.
(cont.) In order to quantitatively predict the effects of the uncertainties, a System Dynamic model is specifically developed for the current engineering of Emission Technologies. The results clearly indicate the control factors for on-time delivery, efficient resource allocation, and cost reduction. This study has integrated the techniques from system engineering, system project management, and system dynamics. An improved automotive exhaust engineering process is proposed.
by Xitian Fang and Deming Wan.
S.M.
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Sugiono. "Investigating an intelligent concept design tool for automotive car body design." Thesis, University of Derby, 2012. http://hdl.handle.net/10545/334913.
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The newly designed car in the automotive industry should meet the customers' requirements, e.g. the outlook of the car, size of the car, usage of the car, among other requirements. It must still consider the factors of social life, resources and environmental problems during the automotive design, such as fuel consumption, emission, global warming, noise, accidents etc. [1], [2], [3]. As a result, the right concept of automotive body design still includes a measurement of its performance and an investigation of its effect on modem life. The aim of the project is to create a car body concept design tool to achieve the design for fuel consumption, design for aerodynamic noise and design for car body vibration. The system is developed with two options for the user: partial limited function car body design and full function car body design. In the partial limited function design, the user is asked to modify the limited size values on three optimized car body designs; optimum saloon car body design, optimum estate car body design, and optimum hatchback car body design which only took place in the small, local sensitive areas. For the full function car body design, the user is allowed to design the overall automotive's size to create a new outlooking vehicle. In order to do so, databases were created to store information pertaining to size versus fuel, size versus vibration, and size versus noise. As per academic style, the research project begins with the literature review and then concentrates on the survey of the geometry types of existing car body designs. The information has been analyzed and classified to serve as references in building the car body models. It is then tested by using Computational Aero-acoustic (CAA) for noise (dB), Computational Fluid Dynamic (CFD) for fuel economic factors (lift force and drag coefficient), and Finite Element Analysis (FEA) for vibration (Hz). At this stage, all the information from simulation tests are collected and inputted into the database. At the same time, a Taguchi tool is employed to select the optimum BPNN architecture with Genetic Algorithm (GA) which is used to train the BPNN. Finally, the thesis will deliver the car body design modules for estate, saloon and hatchback types with complete information pertaining to external aerodynamic noise, aerodynamic vibration and fuel consumption
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Jiménez, Hernández Angel Mário. "Design for manufacturing systems from automotive industry perspective." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2007. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
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Knobel, Martin [Verfasser]. "Experience Design in the Automotive Context / Martin Knobel." München : Verlag Dr. Hut, 2013. http://d-nb.info/1045987387/34.
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Klippel, Brian (Brian Phillip) 1966. "A design methodology for automotive component manufacturing systems." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/50428.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and, (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management, 1998.Includes bibliographical references (p. 93-94).
by Brian Klippel.
M.B.A.
S.M.
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McMurran, Ross. "Design for robustness of complex automotive electronic systems." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/65186/.
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The continual expansion in requirements for vehicle features results in a rapidly increasing complexity of automotive electronic systems. Automotive electronics exhibit properties of systems of systems including that of emergent behaviour and validation complexity. This brings with it major financial risks for automotive manufacturers due to field failures, launch delays, recalls and loss of customers. The contention of this thesis is that robustness, i.e. the ability of a system to avoid service failures resulting from external faults, is a key design criterion for automotive electronics as a mass-market system of systems. Hence effective tools and techniques for the robust design of complex automotive electronic systems are required, but initial research suggests that limited published work on robustness, as opposed to safety, has been done in this field. This thesis addresses the research question of whether a viable framework of methods to substantially improve robustness in the design of complex automotive electronics systems can be developed. A literature review is conducted of potential methods for robust design from automotive and other domains, which identifies opportunities for contributions to knowledge in the following areas. The development of domain knowledge of the prevalence and causes of robustness related failures in the area of automotive electronics. The development of a “design for robustness” framework for complex automotive electronic systems, which should leverage best practices identified during the literature review. Particular items identified to be addressed are the adaptation of safety cases to robustness cases and the development of an approach to robustness modelling based on understanding of what are important factors to model pertaining to robustness of automotive electronics. A review is conducted of 43 well-documented field issues in the area of automotive electronic systems. It is found that these were predominantly (60%) robustness related issues, supporting the need for improved techniques. The results confirm robustness issues as complex, interactive and emergent in nature which are generally not present during normal operation but under transient conditions, in particular during initialisation and shut-down, during failures in other systems, as a result of tolerance spread and of unforeseen (ab)use cases. A design for robustness framework approach is developed incorporating the two proposed new methods of “robustness cases” and “robustness modelling”. A “robustness case” is a structured argument for the robustness of a system analogous to a safety case. A “robustness model” is a model based approach to early robustness verification of complex systems. These new methods are developed through their application to case study of infotainment and evaluated through subsequent application to a hybrid propulsion system. The design methods and artefacts are described in detail, including as generic approaches, and the test results from their use are shown and discussed. Finally the viability of the methods developed and their contribution to knowledge is discussed. The knowledge gained through the study of field issues of root causes of robustness issues in automotive electronics ensured the methods were well targeted. From the application of the methods to infotainment and hybrid propulsion systems a number of positive indicators of the effectiveness of the technique are observed. An analysis is conducted of whether the likely benefits would justify the incremental costs of implementing the methods. This shows that the methods became viable at the point where they can detect a single issue which would otherwise have been undetected until final testing. Deployment approaches, known limitations and areas for further work are also described.
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Black, Thomas A. (Thomas Andrew) 1965. "A systems design approach to automotive brake deisgn." Thesis, Massachusetts Institute of Technology, 1990. https://hdl.handle.net/1721.1/128164.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990, and Thesis (M.S.)--Sloan School of Management, 1990.Includes bibliographical references (leaves 59-61).
by Thomas A. Black.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990, and Thesis (M.S.)--Sloan School of Management, 1990.
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Ryberg, Ann-Britt. "Metamodel-Based Multidisciplinary Design Optimization of Automotive Structures." Doctoral thesis, Linköpings universitet, Mekanik och hållfasthetslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-140875.
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Multidisciplinary design optimization (MDO) can be used in computer aided engineering (CAE) to efficiently improve and balance performance of automotive structures. However, large-scale MDO is not yet generally integrated within automotive product development due to several challenges, of which excessive computing times is the most important one. In this thesis, a metamodel-based MDO process that fits normal company organizations and CAE-based development processes is presented. The introduction of global metamodels offers means to increase computational efficiency and distribute work without implementing complicated multi-level MDO methods. The presented MDO process is proven to be efficient for thickness optimization studies with the objective to minimize mass. It can also be used for spot weld optimization if the models are prepared correctly. A comparison of different methods reveals that topology optimization, which requires less model preparation and computational effort, is an alternative if load cases involving simulations of linear systems are judged to be of major importance. A technical challenge when performing metamodel-based design optimization is lack of accuracy for metamodels representing complex responses including discontinuities, which are common in for example crashworthiness applications. The decision boundary from a support vector machine (SVM) can be used to identify the border between different types of deformation behaviour. In this thesis, this information is used to improve the accuracy of feedforward neural network metamodels. Three different approaches are tested; to split the design space and fit separate metamodels for the different regions, to add estimated guiding samples to the fitting set along the boundary before a global metamodel is fitted, and to use a special SVM-based sequential sampling method. Substantial improvements in accuracy are observed, and it is found that implementing SVM-based sequential sampling and estimated guiding samples can result in successful optimization studies for cases where more conventional methods fail.
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Zair, H. (Hamza). "Collision warning design in automotive head-up displays." Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201906052451.
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Abstract. In the last few years, the automotive industry has experienced a large growth in the hardware and the underlying electronics. The industry benefits from both Human Machine Interface (HMI) research and modern technology. There are many applications of the Advanced Driver Assistant System (ADAS) and their positive impact on drivers is even more. Forward Collision Warning (FCW) is one of many applications of ADAS. In the last decades, different approaches and tools are used to implement FCW systems. Current Augmented Reality (AR) applications are feasible to integrate in modern cars. In this thesis work, we introduce three different FCW designs: static, animated and 3D animated warnings. We test the proposed designs in three different environments: day, night and rain. The designs static and animated achieve a minimum response time 0.486 s whereas the 3D animated warning achieves 1.153 s.
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Amezquita, Tony. "Lean remanufacturing in the automotive industry." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/23166.
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Bryant, Scott T. "User centred engineering in automotive design: A shift from technology-driven product development." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/84793/1/Scott_Bryant_Thesis.pdf.
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The research assessed how best to transition engineering-based automotive firms towards more customer-orientated design and development approaches, whilst identifying the main barriers and concerns facing such a shift. The research investigates the ability of a firm to empower individual engineers with user centred design tools traditionally used by designers, whilst understanding the company-wide needs to facilitate their implementation.
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Chopra, Vikram. "Design of innovative clutching mechanisms for hybrid automotive transmissions." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123009.
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Innovative clutching mechanisms for hybrid automotive transmissions that yield low losses, while still satisfying the conflicting requirements of compactness, quick response, and high power density are explored in this thesis. Moreover, a systematic approach to automotive-transmission clutch design is proposed. The goal is to provide a complementary tool to aid the designer's judgment. The various design variants chosen serve two purposes, to demonstrate the foundation and to showcase approaches and solutions to specific problems that have a direct application in transmission design. The analysis of design variants goes into sufficient depth to be useful to both practicing automotive design engineers and academics.The phenomenon of "spin loss" is well known in the automotive industry, for it affects all transmissions. One energy sink identified in this regard lies in traditional wet clutches and brakes, wherein an open clutch or, correspondingly, an open brake, creates drag on the transmission because of the oil churning around and between the rotating friction plates. A second source of spin loss, or energy sink, is of electromagnetic origin, as it occurs by virtue of spinning inactive motors that carry permanent magnets. Apart from spin losses, the hydraulic actuation of clutches and brakes suffers from head losses. Seals, pumps and valves incur leakages that cause energy loss.Using the techniques outlined in this thesis, two separate novel clutch variants are demonstrated to improve clutch and brake technology. One variant, the electromechanical clutch actuator, is based on a high-performance screw joint with a built-in locking mechanism. The screw joint was tested with two sub-variants, namely, a lead screw and a ball screw. One prototype of each of the two sub-variants was installed on a testbed, to mimic the installation of the actuator in place of the corresponding hydraulic components. To better reflect the elastostatic behaviour of the clutch disk assembly, a new model for its stiffness as a hardening spring was formulated. Proof-of-concept tests of both sub-variants, lead and ball screws, demonstrated their feasibility.The second variant, the electromagnetic dog clutch, is directly aimed at minimizing spin and hydraulic actuation losses for clutched electric motors, wherein the motor is connected to a clutch. The system includes a unique contactless electromagnetic synchronizer and a synchronizing sleeve with dog teeth on the input and output components. The design study, focused on the electromagnetic part, strives to reduce clutch slip and control torque. The novel design features claw-like stator and salient rotor poles with good machinability within a restrictive design volume. A complete design analysis with physical proof-of-concept testing was conducted.Reducing "spin-loss" in transmission assemblies will improve system efficiency and yield better fuel economy. The technologicalimpact will benefit not only the user, who will obtain more mileage for her or his dollar, but also the environment.Dans cette thèse sont étudiés des mécanismes innovants d'embrayage pour transmissions automobiles hybrides qui n'engendrent que de faibles pertes, tout en satisfaisant les besoins parfois conflictives de compacité, de haute vitesse de réaction et de haute densité d'énergie. Une approche systématique de la conception de transmissions automobiles est proposée, dont l'objectif est d'offrir un outil complémentaire au jugement du concepteur. Les divers alternatives choisises servent à présenter les concepts fondamentaux, ainsi qu'à mettre en valeur les différentes approches et solutions à des problèmes spécifiques qui ont une application directe dans le domaine des conceptions de transmissions. L'analyse d'alternatives de conception va suffisamment en profondeur pour être utile à la fois aux ingénieurs de conception automobile et aux théoriciens.Le phénomène de pertes d'énergie cinétique de rotation (PECR) est bien connu dans l'industrie automobile, car cela affecte toutes les transmissions. Un puits d'énergie mis en évidence à ce propos concerne les embrayages et freins traditionnels à fluides, pour lesquels un embrayage ouvert ou un frein ouvert, crée une traînée dans la transmission parce que l'huile tourbillonne autour et dans les plaques tournantes de friction. Un second puits d'énergie est d'origine électromagnétique, car générée par la rotation de moteurs inactifs contenant des aimants permanents. Hormis le PECR, l'actionnement hydraulique d'embrayages ou de freins entraîne des pertes de charges. Les joints, pompes et valves encourent des fuites qui engendrent de puits d'énergie.En utilisant les techniques mises en avant dans cette thèse, deux nouvelles alternatives d'embrayages démontrent leurs capacités à améliorer les technologies des freins et des embrayages. L'une de ces alternatives, l'actionneur {\em électromécanique d'embrayage}, est basée sur une liaison à vis et dispose d'un mécanisme intégré de verrouillage. La liaison à vis a été testée au travers de deux sous-alternatives, à savoir une vis à filet trapézoïdal et une vis à billes. Un prototype de chacune des alternatives a été installé sur un banc d'essai, afin de reproduire l'installation de l'actionneur en lieu et place des composants hydrauliques correspondants. Pour mieux refléter le comportement élastostatique de l'assemblage des disques d'embrayage, un nouveau modèle de sa raideur, assimilée à un ressort durcissant, a été formulé. Des tests de preuve de concept des deux variantes, vis à filet trapézoïdal et vis à billes, ont montré leur faisabilité.La seconde variante, l'embrayage électromagnétique à interférence, est directement utilisable pour minimiser les pertes en rotation et en actionnement hydraulique pour les moteurs électriques à embrayage, pour lesquels un moteur est connecté à un embrayage. Le système inclut un unique synchronisateur et des bagues de synchronisation avec des dents-de-chien sur les composants en entrée et en sortie. Le travail de conception a été concentré sur la partie électromagnétique, qui essaie de réduire le glissement de l'embrayage et le couple de commande. Le nouveau système conception est doté d'un stator en forme de griffes et des pôles de rotor saillants faciles à usiner et à installer dans un espace restreint dans la voiture. Une étude complète de conception avec des tests concrets de preuve de concept a été accomplie.Rééduire le PECR dans les assemblages de transmissions améliorera l'efficience du système et mènera à davantage d'économie de carburant. L'impact technologique sera ainsi bénéfique non seulement pour l'utilisateur, qui profitera d'un kilométrage plus élevé pour son argent, mais aussi pour l'environnement.
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Tampi, Mahesh. "Strategic frameworks in automotive systems architecting." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76936.
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Thesis (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 59-60).
More often than not, large-scale engineering concepts such as those used by creative automotive manufacturing companies require the incorporation of significant capital outlays and resources for the purposes of implementation and production of additional configurations. In most cases, these systems are employed in conditions that are in a constant state of change with regards to the extenuating macroeconomic conditions, market conventions, and customer demands and expectations, requiring a constant inspection of both the performance and quality of the components of the system. With rising fuel prices and a constantly changing global landscape, unique strategies have to be developed and used to create value for the stakeholders by taking into account the aesthetic appeal of the vehicles, their performance, fuel efficiency, and future technological enhancements, while minimizing manufacturing cost and time to delivery. For example, engine selection has a significant impact not only on the design architecture of the vehicle but also on the service infrastructure offered in society. Although strategic management principles hinge on the conventions of maximizing the expected value of uncertainties, flexibility in the architectural design of a large scale complex systems along with its current and future applications have to be taken into account in order to allow the developed systems to not only encompass the theoretical frameworks of conventional engineering but also metamorphose the theories and constructs of modem physics to deliver successful products in conditions characterized by constant geopolitical- social change and increasing global competition. The intent of this research is demonstrate that innovation and better strategic management of automotive designs and its implementation within the construct of the market environment will not only determine the success of the products offered in the short term but also lay the foundation for the long term growth of the enterprise through modular enhancements and serviceability opportunities.
by Mahesh Tampi.
S.M.in Engineering and Management
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Pinto, Alejandro S. M. Massachusetts Institute of Technology. "Technology adoption in automotive product development." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/105300.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, 2014.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 46-50).
The automotive industry is characterized by the early adoption of technology into their products. In recent years, the automotive industry has developed infotainment systems that encompass navigation, digital media, phone calls, safety and other elements. These infotainment systems are based on componentry similar to smartphones or tablet computers. In contrast to tablet computers, the automotive infotainment systems have followed the typical automotive product development pace, leaving the automotive infotainment systems with outdated hardware and software when compared to the consumer electronic industry. The automotive industry follow a model year cycle while consumer electronics quickly adapt to consumer demand with many releases over a single calendar year. The objective of this thesis is to present a new architecture specific to In-vehicle infotainment systems; providing a faster componentry adoption and faster software updates.
by Alejandro Pinto.
S.M. in Engineering and Management
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Filho, Dalicio Guiguer. "Co-desenvolvimento de produto - um estudo na indústria automotiva." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3149/tde-16122014-162547/.
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A crescente tendência de participação dos fornecedores no processo de desenvolvimento de produto da indústria automotiva, faz com que o estudo desta parceria se torne importante, tanto para as montadoras quanto para os fornecedores. O principal objetivo desta parceria é a utilização da capacidade de engenharia dos fornecedores (know-how), permitindo assim, a incorporação de novas tecnologias ao veículo e a redução dos custos de desenvolvimento das montadoras. Observa-se cada vez mais dentro da montadora, discussões sobre o co-desenvolvimento (co-design) nos projetos automotivos, níveis de integração com o fornecedor, fase do projeto adequada para o envolvimento dos fornecedores, o nível adequado de detalhamento das especificações técnicas utilizadas como referência inicial pelos fornecedores, a definição das responsabilidades de cada parceiro e o próprio processo para realização do desenvolvimento em parceria. O presente trabalho explora de que forma tais questões são atualmente abordadas na subsidiária brasileira de uma montadora, através do estudo de seus processos e ferramentas e da comparação com as informações disponíveis na bibliografia e estudadas no meio acadêmico. Com este trabalho, pretende-se fornecer informações que possam auxiliar montadoras e fornecedores na melhoria de seus processos internos de desenvolvimento de produto, principalmente nas questões relativas ao co-desenvolvimento (co-design).The increasing trend of suppliers participation in the automotive industry product development process makes the study of this partnership important for automakers and suppliers. The main objective of this partnership is to take advantage of suppliers engineering capability (know-how) in order to bring new technologies to the vehicle and reduce automakers development costs. It is becoming more and more common inside automakers, discussions regarding co-design in automotive projects, supplier integration levels, suitable project phase to get suppliers involved, suitable level of details for automakers technical specifications used as initial reference by suppliers, the responsibilities definition of each partner and the process to perform development in a partnership relation. This work explores how these issues are currently addressed in a Brazilian automaker subsidiary, through the study of its processes and tools and the comparison with the information available in the bibliography and studied academically. Finally, this work intends to provide information that can assist automakers and suppliers to improve their internal product development processes, mainly regarding co-design.
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Peres, Edson Maldonado. "Definição de um diagrama operacional para estruturar e correlacionar atividades e padrões dimensionais e geométricos no desenvolvimento e melhoria de produtos e processos, aplicados a um projeto veicular." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3149/tde-16122014-152632/.
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Toda variação dimensional de montagem está baseada no empilhamento entre geometrias por formas e furos/pinos de localização em dispositivos. A capacidade de se garantir a menor variação dimensional é proporcional ao número de empilhamentos e ao comportamento geométrico dos componentes para formar o conjunto. Quanto maior a dependência geométrica no empilhamento, maior a probabilidade de variação. Entenda-se por dependência geométrica as conseqüências dimensionais circunstanciadas pela geometria de contato entre componentes, que facilitarão ou não os processos produtivos. Por este conceito, as necessidades relativas ao controle produtivo baseiam-se na capacitação do processo à necessidade do produto e vice-versa (a um processo instalado, desenvolver o produto cuja fabricação seja capaz em garantir o seu desempenho). A capacitação do processo deve-se à garantia sobre controles de componentes e conjuntos, mediante a avaliação de correta aplicação de tolerâncias dimensionais e geométricas no projeto e na garantia do processo. O desempenho do produto está garantida pelos seis graus de liberdade traduzidos como referências de localização e montagem para a sua função. Aspectos relacionados à rigidez de estrutura são relevantes e poderão ser inseridos nos estudos para garantia de conceitos a serem avaliados. O diagrama operacional proposto tem como foco reunir atividades e padrões de desenvolvimento de produtos e capacitação do processo, gerenciados por ferramentas de desenvolvimento e qualidade e controle dos processos. O benefício principal do diagrama operacional está na identificação de correlação de atividades, padrões de variações e capacidades produtivas, por meio da criação de referências geométricas e dimensionais. Por meio deste diagrama operacional há o desenvolvimento associado à avaliação de validação de montagens de produtos. E ainda uma correlação conseqüente à otimização de processos e produtos. A base de dados para esse projeto está nos vários processos e conceitos de produtos empregados, na disponibilidade das referências bibliográficas sobre viii capacidades de sistemas de inspeção, introdução aos princípios de tolerância, intrínsecas ao desenvolvimento de produtos e processo, ao processo de validação de componentes, nas análises de tensões e deformações e pelo embasamento em tolerâncias dimensionais e geométricas pela ASME Y 14.5 M. Identifica-se ainda a padronização de aplicação de referenciais para inspeção e processos de união entre componentes, definidos por estratégias de localização.All assembly dimensional and geometric variation are based on geometries stack ups by profiles, locating holes and pins on fixtures. There is a direct relation between the number of stack ups, the final variation and geometry of assembly components. The probability of variation is directly related to the geometry dependency, that are circumstances of dimensional consequences for product and process. Based on this concept, process control is related to the process capability and product performance, and vice-versa (based on a installed process, the product must be robust for that process). The process capability focus the components and assemblies assurance, based on the dimensional and geometric tolerance. Also the process assurances are about components and assemblies control, based on correct dimensional and geometric tolerance. The product performance is dimensionally assured by the six degrees of freedom translated as locating and assembly references for its function. Aspects related to the stiffness are relevant and the concepts will be presented. The proposed Operational Diagram is focused to meet activities and product pattern development with process capacity, managed by quality tools and process control methodology. The benefits of Operational Diagram are to identify and make the correlation among activities, capability and variation through dimensional and geometric references creation, with product and process continuous improvement. The data base for this proposal are in the multiples process and project applied, in the information, in the process validation based on statistical analysis, in the CAE tooling with basis on tolerance by ASME Y 14.5 M., that identify references application, referenced to the locating strategy.
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Cuata, Cervantes Jonathan Eduardo. "Optimizing automotive electrical distribution systems design and development by reducing design iterations." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/106239.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, School of Engineering, System Design and Management Program, Engineering and Management Program, 2015.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 122-123).
The design and development (D&D) of electrical distribution systems (EDS) is a practice that has been performed in the automotive industry for more than 100 years. The amount of technology infusion in vehicles within this history impacts the design and development of electrical distribution systems in an exponential manner. The electrical architecture of a vehicle increases in complexity with every new product launched into the market. The number of interactions and interdependencies between design and development activities, and across functional groups, has been increasing as a consequence of the constant innovation in the vehicle electrical architecture. These interdependencies and interactions with design and development tasks and cross functional groups generate potential design iterations and rework loops that have direct impacts on the cost, scope and schedule of automotive projects. This research has a fundamental purpose, the review of the electrical distribution systems design and development process inside an automotive OEM through the use of (1) traditional and modern project management tools, (2) surveys and interviews inside the OEM EDS organization, and (3) a review of product development literature, in order to identify recommendations to reduce unplanned design iterations and rework generated by the nonlinear nature of automotive product development. While the analyses, summary and recommendations are specific to EDS product development, it is hoped that the use of both traditional and modern project management tools described in this thesis can serve as a model for those in other industries.
by Jonathan Eduardo Cuata Cervantes.
S.M. in Engineering and Management
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Marteliusson, Karl. "LYNK&CO CIRC : WHAT IF THE AUTOMOTIVE BUSINESS EMBRACED A CIRCULAR MINDSET?" Thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-149732.
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This project is questioning our modern way of life. With the current capitalistic economy we are draining the world on resources and creating inequality among people. It is often said the the capitalistic system is lifting people out of poverty and there is no better way. However, it is proven to be negative for our ecology and it is important that we find new ways of develop mobility. So our future generations can enjoy the freedom that we today have become so ac-customed to. What can we do to consume less and respect the world we are living by. Is it a matter of consuming green. Or do we need a fundamental change in how we create things. A bright light in these questions is maybe to head into a circular economy. This project therefore explores how a automotive interior would look like when designed with a circular mindset. Could a Universal Basic Income reduce extraction and what is the role of A.I and automation in the development for better mobility. For this project an in depth literature research was carried out to gather information about our economic system and social factors. The research about digitalisation and automatisation have been gathered from highly regard-ed magazines and web news papers. Second part of the research is also web based, and about sustainable materials that could be used in this interior concept. The design phase started with creation of a user in a chinese context, based from the trend analyzer firm Stylus. China was chosen because it’s a rapid growing economy and it’s the main market for the Chinese-owned car brand Lynk & Co. The collaboration partner for this thesis. The design phase followed with sketching to quickly visualize early ideas. These were then brought into a CAID program to fit the chosen package of a small city car. The design was created around a male mannequin to ensure usability. A full-size mockup was built to test functions and validate design around a large male and the smallest female percentile. The project resulted in a strategic concept of how a new business model would push for a greener development using a circular mindset. From that perspective a interior was created using sustainable materials. The overall struc-ture is covered in a hard cover manufactured in recycled plastic. The seating and dashboard were design with the highly efficient material Abroform in mind. Abroform is based of Lignin which is a byproduct of the paper indus-try. Therefore no additional extraction is needed making it sustainable. Further it had all the positive design charac-teristics from conventional plastics. The soft seat cushions and the front dash was designed with compressed felt, manufactured from organic wool. These parts created a friendly and soft interior and are easy changeable for maintaining purposes. Overall the interior focused on providing smart storage solutions using few materials with an “bolt-on aesthetic”. The design language is using a friendly surface treatment and to include users make the journey pleasant.
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Everett, Nathan 1972. "Automotive telematics : colliding clockspeeds and product architecture strategy." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/91781.
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Krishnaswami, Ram N. (Ram Narian). "Knowledge management practices in automotive safety attribute development." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35111.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2006.Includes bibliographical references (p. 100-102).
Organizations strive continuously to become efficient. Over the years many of them have tried to attain this through streamlining or reengineering their product development practices. 'While some of them succeed others are less successful. Product development organizations within automotive enterprises are not different in this regard. Most reengineering efforts seem to concentrate on tasks and schedule. Detailed schedules are cascaded while the identification of enablers on delivering to the new schedule is left to individual teams in the organization. At the working level, the reengineering process is misunderstood as abandonment of things gone right from past practices. This sometimes results in teams reinventing solutions to similar problems from the past. The purpose of this thesis is to demonstrate that a key enabler for success in any reengineering effort is to understand existing knowledge management practices and reuse them in the context of proposed changes. To do so, existing practices would have to be captured in usable formats. Proposed changes to existing product development process within an automotive product development organization are studied.
(cont.) Comparisons are made between existing and proposed product development process. To focus this comparison and understand the changes better, the development tasks undertaken by a safety attribute team within the product development group is studied in detail. An analysis of the development process undertaken by the safety team to existing schedule is performed through case studies. Based on this analysis scenarios are developed for the proposed changes. From the case studies it is apparent that formalized knowledge management practices in formats usable by development teams will help in reducing iteration time through cascade of robust targets. Recommendations are made to build upon and sustain recently implemented knowledge management practices within the safety attribute team. An implementation roadmap for the new knowledge management frame work is provided.
Ram N. Krishnaswami.
S.M.
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Lynn, David F. "Automotive Design Education: Integrating Computer Based Tools with Traditional Techniques." Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-04102006-020924/.
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Tokola, Ryan A. "Visualization of radiation for optimized design of automotive antennas." Connect to resource, 2010. http://hdl.handle.net/1811/45025.
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Tretten, Phillip. "Information design solutions for automotive displays : focus on HUD." Doctoral thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26558.
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Automotive systems are being developed to increase positive driver experiences and traffic safety. As these new technologies are being adapted into the automotive environment, i.e. safety systems and multimedia applications, are the drivers additionally taking with them nomad devices, i.e. mobile phones, media players, GPS devices, etc., into this environment making it more and more complex. This complexity does not help the driver and in some cases distracts the driver too. The number of information sources has escalated to new heights and this trend does not seem to be slowing down. To be able to keep up with the advances in information technology, which also includes advances in display technology, automobile manufacturers are seeking for new and/or different ways to attract potential customers without bending the traffic safety. In this thesis this phenomena is looked upon by studying how drivers could use the information presented to them in the automobile. What do drivers perceive as important information, how should it be presented, and where? To obtain this several studies were conducted to gain a more complete picture of a driver's perception, behavior, and preferences. First, a questionnaire was administered to three different culture groups; China (167), Sweden (142), and United States of America (89) to learn how they perceive the information's importance and placement. The results showed that the drivers preferred the locations used in their own automobiles, but could think of using the HUD for more advanced driving helps. Based upon those responses a second study was conducted in a fixed-based high fidelity driving simulator. Forty participants drove a baseline and a experiment block (ca 20 min each) in which they where given either 10 warnings or 10 messages from four locations found in automobiles; the Head-Up Display (HUD), Head Down Display (HDD), Infotainment Display (IF), and Center-Stack Display (CS). The measurements were time to respond, time to notice, glance time, fixation time, number of fixations, and their driving performance via lane deviation and average speed during in each particular situation. All the drivers preferred information being presented in the HUD and the data showed that their performance was just as good as in the IF location and significantly better than in the CS and HDD locations. Redundant information in the HUD and HDD were not preferred and the participants the HUD exclusively. These results gave support to test HUD in traffic and in the drivers own vehicles. Therefore 30 drivers were recruited to test a HUD during three around the clock days, which showed the automobiles actual speed in their own automobiles on the windscreen. The on-road test showed that HUD was significantly preferred over the HDD for speed information. The majority of the drivers also wanted important warnings to be made available there along with directional helps for navigation. In conclusion the HUD was seen as the "next step" in automobile development. To reduce time away from road, increase traffic awareness, and to "lift" necessary information from more difficult to notice, and attend to, locations to the traffic scene the HUD could be the solution to enhance traffic safety, while speedometer and warning areas could be "freed up" and used for other functions and systems, leaving the locations furthest away for non-critical information.Godkänd; 2011; 20110310 (phitre); DISPUTATION Ämnesområde: Industriell design/Industrial Design Opponent: Professor Jeff Caird, Department of Psychology, University of Calgary, Canada Ordförande: Professor Dennis Pettersson, Institutionen för ekonomi, teknik och samhälle, Luleå tekniska universitet Tid: Fredag den 13 maj 2011, kl 13.00 Plats: E632, Luleå tekniska universitet
OPTIVe - Optimised system integration for safe interaction in vehicles
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Butsuen, Tetsuro. "The design of semi-active suspensions for automotive vehicles." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14220.
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Mack, Newton Eliot. "Cost effective design of composite structure for automotive applications." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38157.
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Low, Wai Leung 1977. "Cell and equipment design in the automotive components industry." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/89323.
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Diaz, Dominguez David. "Enhancing the conceptual design process of automotive exterior systems." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/70797.
Full textAbstract:
Thesis (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 152-154).
Product development cycles in the automotive industry are being reduced and competition is more demanding than ever before. To be successful in this environment, Original Equipment Manufacturers need a product development process that delivers best-in-class value, at a competitive cost and with the shortest lead time. Within the development process, the conceptual design is the most important phase in the delivery of a nocompromise design solution. In this phase, design teams have the largest amount of latitude to create value in the product, but they also face high levels of uncertainty and incomplete information to make decisions. At a high level, the conceptual design phase encompasses four major steps. In the first step, value is defined from the stakeholder perspective and system objectives are defined. The second step involves a divergent process in which design space is explored and several concept alternatives are generated to meet the system objectives. The third is a convergent process in which design alternatives are matured, evaluated and one is selected. In the fourth step, the architecture of the system is articulated. The intended impact of this thesis is to enhance the value delivered in the conceptual design phase and prevent waste in downstream activities within the product development process. To achieve this, the conceptual design processes of a major automotive manufacturer were studied to identify the problems that constrain value delivery and generate waste. The findings of this study and the exploration of existing concept development frameworks were synthesized in a concept development methodology focused on automotive Exterior Systems.
by David Diaz Dominguez.
S.M.in Engineering and Management
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Jönsson, Johan. "Design of a tilting test rig for automotive parts." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-203794.
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Kaplan, Berkan Özcan A. Can. "The Main Principles of Retrospective Approach In Automotive Design/." [s.l.]: [s.n.], 2007. http://library.iyte.edu.tr/tezlerengelli/master/endustriurunleritasarimi/T000565.pdf.
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Fallu, John W. (John William) 1966. "Internalization of robust engineering methods in automotive product development : a study of corporate quality change in a large, mature automotive company." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/34735.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2004.Includes bibliographical references.
It is broadly recognized in the automotive industry, as well as many others, that those organizations that can deliver timely new products or existing product upgrades at desired cost and quality targets will produce higher levels of customer satisfaction, higher profits and a significant competitive advantage. In an attempt to improve the product development process and the quality of engineering, many automotive firms have implemented, and continue to implement, numerous initiatives designed to increase the discipline within the engineering process with the expectation of meeting cost, timing, and customer satisfaction/quality targets. Improved product development systems, 6-sigma, reliability methods, and 8-D's, are some of the initiatives that have been utilized in attempts to improve the quality operating systems of the organization and tie engineering improvements to customer needs. While these initiatives have been successful within certain areas, there continues to be a shortfall between required performance and actual quality levels in some large, mature firms. While there has been substantial quality and cost improvement in the past few years, increasing competition continues to demand higher and higher value for the customer. Satisfying market requirements and permanently improving the quality of vehicles developed requires a complete understanding of the demands on the engineering system, including the enablers and roadblocks to the full utilization of robust engineering practices. This research examines one automotive company's product development process to determine how and why short cuts in the product development process are typically made.
(cont.) Through studying the progression of cultural change in the organization as related to the utilization of robust engineering tools, the roadblocks and the causal factors for lack of internalization and application of robust practices are identified. Finally, based on the study's analysis and results, effective corrective actions are identified and recommendations for their incorporation are made.
by John W. Fallu.
S.M.
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Belecheanu, Roxana Andreea. "An investigation of design trade offs in the automotive industry." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275308.
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Sgueglia, John. "Managing design changes using safety-guided design for a safety critical automotive system." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/106224.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, School of Engineering, System Design and Management Program, Engineering and Management Program, 2015.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 95-99).
The use of software to control automotive safety critical functions, such as throttle, braking and steering has been increasing. The automotive industry has a need for safety analysis methods and design processes to ensure these systems function safely. Many current recommendations still focus on traditional methods, which worked well for electro-mechanical designs but are not adequate for software intensive complex systems. System Theoretic Accident Model and Process (STAMP) and the associated System Theoretic Process Analysis (STPA) method have been found to identify hazards for complex systems and can be effective earlier in the design process than current automotive techniques. The design of a complex safety-critical system will require many decisions that can potentially impact the system's safety. A safety analysis should be performed on the new design to understand any potential safety issues. Methods that can help identify where and how the change impacts the analysis would be a useful tool for designers and managers. This could reduce the amount of time needed to evaluate changes and to ensure the safety goals of the system are met. This thesis demonstrates managing design changes for the safetyƯ-guided design of an automotive safetyƯ-critical shift-by-wire system. The current safety related analysis methods and standards common to the automotive industry and the system engineering methods and research in the use of requirements traceability for impact analysis in engineering change management was reviewed. A procedure was proposed to identify the impact of design changes to the safety analysis performed with STPA. Suggested guidelines were proposed to identify the impact of the change on the safety analysis performed with STPA. It was shown how the impact of the design changes were incorporated into the STPA results to ensure safety constraints are managed with respect to these changes to maintain the safety controls of the system throughout the design process. Finally the feasibility of the procedure was demonstrated through the integration of the procedure with requirements traceability based on system engineering practices
by John Sgueglia.
S.M. in Engineering and Management
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Boran, Canice P. (Canice Patrick) 1967. "Implementing lean methodologies in automotive electronic product development processes." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/88337.
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