Дисертації з теми "Modular Manufacturing"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "Modular Manufacturing".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Müller, Luis Antonio 1969. "Modular semiconductor test, assembly & packaging manufacturing equipment design." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9840.
Повний текст джерелаCosic, Matea, and Viktor Rochowiak. "Designing an assembly line for modular house manufacturing : Increased efficiency of the manufacturing process." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Industriell organisation och produktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40717.
Повний текст джерелаKotilainen, Markku Sami Antero 1972. "Design and manufacturing of modular self-compensating hydrostatic journal bearings." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/45497.
Повний текст джерелаIncludes bibliographical references (p. 241-244).
In order to carry a load, a multi recess hydrostatic bearing supplied with a single pressure source requires compensation devices. These devices are also known as restricters and they allow the recess pressures to differ from each other. These devices, when properly selected and tuned, can deliver excellent bearing performance. However, these devices add to the complexity of the bearing and they are sensitive to manufacturing errors. These devices must often be tuned specifically for each bearing and are therefore expensive to install and maintain. Self-regulating or self-compensating bearings do not need any external devices to achieve load-carrying capability and they do not add to the total degrees of freedom of the system. However, in many cases the proposed designs require multiple precision manufacturing steps such as EDM and grinding in addition to precision shrink fit. In this work a self-compensating design, which eliminates all but one precision-manufacturing step, was manufactured and tested. Novel manufacturing methods for different sizes were introduced. The test results were compared with theoretical results and satisfactory agreement was achieved. The bearing sensitivity to manufacturing errors was analyzed computationally using statistical methods. These results were used to show that the introduced manufacturing methods are more cost effective than the applicable precision or semi precision manufacturing methods even when the performance variation is taken into account. When hydrostatic journal bearing is rotated hydrodynamic effects are introduced. Often, these effects are ignored by assuming them to be insignificant. Two non-dimensional parameters were derived to estimate the significance of the hydrodynamic effects and limits to these parameters were searched numerically. Design theory, along with first order equations to estimate bearing performance was developed.
by Markku Sami Antero Kotilainen.
Ph.D.
Cho, Tae Ho. "A hierarchical, modular simulation environment for flexible manufacturing system modeling." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186144.
Повний текст джерелаKarlsson, Johan. "Utvärdering av ModFix : Byggnation av modulära fixturer integrerat i Process Simulate." Thesis, University of Skövde, School of Technology and Society, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4211.
Повний текст джерелаSyftet med detta projekt är att utvärdera ModFix som verktyg och arbetsmetoden för att skaps fixturer med ModFix. ModFix är ett verktyg som är integrerad i Siemens simuleringsmiljön Process Simulate och används för att skapa modulära fixturer. Målsättningen med arbetsmetoden där fixturer skapas med ModFix är att ledtiden och mantimmarna för att skapa fixturer ska reduceras med 50 % i jämförelse med Volvo Cars nuvarande arbetsmetod där fixturer skapas med Catia V5.
ModFix-verktyget består av tre funktioner. Dessa funktioner är; Configuration Administrator, Fixture Designer och Modular Fixture Mapping Report. Configuration Administrator är ModFix´s administrationsverktyg och används för att skapa de fixturbaser och fixturkonfigurationer som senare används för att skapa modulära fixturer med Fixture Designer. Fixture Designer används för att skapa kompletta modulära fixturer. Modular Fixture Mapping Report är den funktion som används för att generera en rapport som specificerar mappningen mellan de fixturenheterna och de referenspunkter (PLPs/”frames”) där produkten fixeras.
Fördelarna med arbetsmetoden där fixturer skapas med ModFix i jämförelse med den nuvarande arbetsmetoden är bland annat att fixturen hela tiden befinner sig i samma utvecklingsmiljö och den extra frihetsgraden att roboten simuleras parallellt med att fixturen skapas för att kunna undvika kollisioner. Även att ModFix automatiskt ger förslag på fixturkonfigurationslösningar för att fästa fixturelementen mot fixturbasen och att fixturer som skapas med ModFix är moduluppbyggda av standardkomponenter är två andra fördelar med arbetsmetoden där fixturer skapas med ModFix jämfört med då fixturer skapas med den nuvarande arbetsmetoden.
Resultatet av detta projekt visar att ModFix kan reducera mantimmarna betydligt mer än 50 % för att skapa fixturer jämfört med att skapa fixturer med den nuvarande arbetsmetoden. Ledtiden för att skapa fixturer med ModFix reduceras ännu mer än mantimmarna jämfört med då fixturer skapas med den nuvarande arbetsmetoden där fixturer skapas med Catia V5.
The aim of this project is to evaluate ModFix and its work method used to create fixtures with ModFix. ModFix is integrated in the simulation environment Process Simulate, provided by Siemens. ModFix is used to create modular fixtures. The objective with the work method where fixtures are created in ModFix is to reduce lead-time and man-time with 50 % in comparison with the current work method at Volvo Cars where fixtures are created in Catia V5.
The tool ModFix consists of three functions. These functions are; Configuration Administrator, Fixture Designer and Modular Fixture Mapping Report. Configuration Administrator is the administration tool in ModFix and is used to create the fixture bases and the fixture configurations as subsequently are used to create modular fixtures with Fixture Designer. Fixture Designer is used to create complete modular fixtures. The Modular Fixture Mapping Report function is used to create a report that specifies the mapping between the fixture units and the reference points (PLPs/frames) where the product is fixed.
The benefits with the work method where fixtures are created with ModFix in comparison with the current work method includes that the fixture constantly stays in the same development environment and the possibility to simulate the robot in parallel with creating the fixture to avoid collisions. That ModFix automatic gives suggestions of fixture configuration solutions to attach the fixture element to the fixture base and that fixtures created with ModFix are modular built up of standard components are two other benefits with the work method where fixtures are created with ModFix in comparison with the current work method.
The result of this project shows that ModFix can reduce the man-time significant more than 50 % to create fixtures with ModFix in comparison with the current work method where fixtures are created in Catia V5. The lead-time can be reduced even more than the man-time when using ModFix to create fixtures in comparison with the current work method.
Ariffin, Saparudin bin. "Modelling and simulation in support of the design and construction of modular machine control system." Thesis, Loughborough University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336507.
Повний текст джерелаWallmark, Toste Jawi. "Product architecture network : representing modular product families for mass customization /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?IEEM%202005%20WALLMA.
Повний текст джерелаKul, Mustafa Cihangir. "Design, Development And Manufacturing Of An All Terrain Modular Robot Platform." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611858/index.pdf.
Повний текст джерелаAlkahlan, Bandar Suliman. "Integrated Design and Manufacturing [IDM] Framework for the Modular Construction Industry." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81418.
Повний текст джерелаPh. D.
Keyvani, Ali. "Modular Fixture Design for BIW Lines Using Process Simulate." Thesis, University West, Department of Engineering Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-1613.
Повний текст джерелаThe unchangeable need of securing and locating parts during different manufacturing processes turned the fixtures to key elements in many part production industries. The iterations between design engineers and manufacturing planners because of late collision detection of the part/fixtures with robots cost a lot of time and money. The lead-time can be reduced by developing tools and/or methods for early verification of the fixtures during the simultaneous engineering phase. Different aspects of fixture designing, modeling and simulating is investigated as a base step to recognize the best practice work to do fixture planning in Process Simulate integrated PLM environment. The aim of the project is to use Process Simulate to design and validate modular fixtures at the same time and in a single environment. It also aims to investigate the possibility of adding kinematics, sensors, and actuating signals to the fixtures and utilize them to model the fixture behavior in a larger simulation study. The project narrows down its focus on the fixtures designed for robotic applications specifically in Automotive Body in White lines without losing generality. The document type stated at the title page and in the header of this page is master thesis work.
Wan, S. K. "The design of modular cell controllers for flexible automated batch manufacturing facilities." Thesis, University of Huddersfield, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379051.
Повний текст джерелаNg, Hok Chuen. "An integrated design, simulation and programming environment for modular manufacturing machine systems." Thesis, De Montfort University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414936.
Повний текст джерелаZhu, Ji 1964. "Multiple choice modular design when linear and separable constraints are present." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276938.
Повний текст джерелаPisano, Giorgia. "Modular Design Approach as Enabler for Operational Efficiency of Closed Loop Manufacturing Systems." Thesis, KTH, Industriell produktion, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174145.
Повний текст джерелаCabrejos, Paredes Mario Roberto, and Roman Kevid Arturo Gutierrez. "Efficiency improvement in a manufacturing textile company: a peruvian case." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/655035.
Повний текст джерелаThe implementation of Lean Manufacturing methodology and philosophy in the garment industry works as a method to improve efficiency and productivity. This study demonstrates the application of industrial engineering tools in a clothing manufacturing SME in combination with Lean Manufacturing principles to solve problems in the sewing section. The industrial engineering tools, such as method study, the rearrangement of layout and the line balance, gives us the means to visualize the problems related to the production of a garment, such as excess inventory in the storage and production process, incorrect plant distribution that caused unnecessary movements and delays in production compliance due to inefficient work methods. After evaluating a garment SME in Peru, the results showed that all these problems were present. Finally, a solution model is proposed and simulated using the previously mentioned tools in order to optimize the production process. The results show an improvement of 7.38% in efficiency
Trabajo de investigación
Chen, Jing. "Development of an object-oriented framework for modular chemical process simulation with semiconductor manufacturing applications." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3535.
Повний текст джерелаThesis research directed by: Chemical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Sun, Xizhi. "An integrated framework for developing generic modular reconfigurable platforms for micro manufacturing and its implementation." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/3493.
Повний текст джерелаCollins, Donovan (Donovan Scott). "Feature-based investment cost estimation based on modular design of a continuous pharmaceutical manufacturing system." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66063.
Повний текст джерела"June 2011." Cataloged from PDF version of thesis.
Includes bibliographical references (p. 72-73).
Previous studies of continuous manufacturing processes have used equipment-factored cost estimation methods to predict savings in initial plant investment costs. In order to challenge and validate the existing methods of cost estimation, feature-based cost estimates were constructed based on a modular process design model. Synthesis of an existing chemical intermediate was selected as the model continuous process. A continuous process was designed that was a literal, step by step, translation of the batch process. Supporting design work included process flow diagrams and basic piping and instrumentation diagrams. Design parameters from the process model were combined with feature-based costs to develop a series of segmented cost estimates for the model continuous plant at several production scales. Based on this analysis, the continuous facility seems to be intrinsically less expensive only at a relatively high production scale. Additionally, the distribution of cost areas for the continuous facility differs significantly from the distribution previous assumed for batch plants. This finding suggests that current models may not be appropriate for generating cost estimates for continuous plants. These results should not have a significant negative impact on the value proposition for the continuous manufacturing platform. The continuous process designed for this project was not optimized. Therefore, this work reiterates that the switch to continuous must be accompanied with optimization and innovation in the underlying continuous chemistry.
by Donovan Collins.
S.M.
M.B.A.
Martins, Ricardo Wagner Campos. "Uma arquitetura modular para controle de FMS." Universidade Federal de São Carlos, 2005. https://repositorio.ufscar.br/handle/ufscar/316.
Повний текст джерелаIn order to attend the market quickly, a company need to have flexibility and to change its production line, to assist to the production of personalized products, to change the raw material or, even, the conception of the product like in an automatic system of manufacture. Administration of processes, industrial automation and IT (Information Technology) are essential to guarantee not only the companies, competitiveness but their survival inside of this scenery. The larger interest among the automatic systems of manufacture in this work is the flexible manufacture system (FMS), for its inclusion and complexity and, consequently, its control and the variety of architectures, as the centralized, the hierarchical, the heterarchical, the hybrid and, finally the multi - agent, therefore the main focus of this work will be the control system of a FMS. So one of the architecture alternatives, is the proposal using a system of hybrid control, because it allows the communication among levels, by sidelong, and the modules involved in the production process and factory ground control, so it will be possible, to determine which are the instances or moments so of decision, describing the used functions, as well as the treated information. To make possible the modeling modules are used: manager, selective and movement controller facilitating the construction of a structured algorithm aiming at the detail of the process mapping of communication about the actions unchained in the factory ground.
Para uma empresa responder mais rapidamente ao mercado, é importante ter flexibilidade e poder mudar sua linha de produção facilmente, para atender à fabricação de produtos personalizados, alterar a matéria-prima ou, até mesmo, a concepção do produto como em um sistema automático de manufatura. Gerenciamento de processos, automação industrial e TI (Tecnologia da Informação) são essenciais para garantir não somente competitividade das empresas, mas sua sobrevivência dentro deste cenário. Dentre os sistemas automáticos de manufatura que têm sido abordados, o de maior interesse para o escopo deste trabalho é o sistema flexível de manufatura (FMS), por sua abrangência e complexidade e, conseqüentemente, seu controle. Há uma variedade de arquiteturas de controle, como a centralizada, a hierárquica, a heterárquica, a híbrida e, finalmente a multi agente, com vantagens e desvantagens em relação à facilidade de modelagem, implementação e desempenho. Como proposta deste trabalho é estudada uma das alternativas de arquitetura, utilizando um sistema de controle híbrido, pelo fato do mesmo permitir a comunicação entre níveis, tanto lateralmente, como com os módulos envolvidos no processo de fabricação e controle de chão de fábrica. Será possível com isto, determinar quais são as instâncias ou momentos de tomada de decisão, descrevendo as funções utilizadas, bem como as informações tratadas. Para viabilizar a modelagem utilizam-se módulos: gerenciador, seletivo e controlador de movimentação facilitando a construção de um algoritmo estruturado objetivando o detalhamento do mapeamento do processo de comunicação das ações desencadeadas no chão de fábrica.
Goyal, Arvind. "APPLICATION OF ARTIFICIAL NEURAL NETWORK TECHNIQUES FOR DESIGN OF MODULAR MINICELL CONFIGURATIONS." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/508.
Повний текст джерелаTezcanlı, Eda Seçkin Yavuz. "An analytical surver on customization at modular systems in the context of industrial design/." [s.l.]: [s.n.], 2006. http://library.iyte.edu.tr/tezler/master/endustriurunleritasarimi/T000409.pdf.
Повний текст джерелаPerini, Francesco. "Structural design, manufacturing and testing of the new wing for the CSIR's Modular UAS in composite materials." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4772/.
Повний текст джерелаGreenwood, Thomas A. "A modular supply chain architecture for low-volume high-mix surface mount technology manufacturers." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/84340.
Повний текст джерелаIncludes bibliographical references (p. 109).
by Thomas A. Greenwood.
S.M.
Kenger, Patrik. "Module property verification : A method to plan and perform quality verifications in modular architectures." Doctoral thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3965.
Повний текст джерелаWu, Hongjian. "Process Modeling and Planning for Robotic Cold Spray Based Additive Manufacturing." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCA026.
Повний текст джерелаCold spray (CS) is a solid-state coating deposition technology that has recently been applied as an additive manufacturing (AM) process to fabricate individual components. This potential AM process is attracting more and more attention because of its advantages: high-forming efficiency, low temperature, and no phase changing of materials. These advantages make CS able to form large-volume objects to become an efficient and effective AM process. Nowadays, new advances in cold spray additive manufacturing (CSAM) call for new process implementation to improve the manufacturing accuracy and flexibility. Therefore, the purpose of this study is to enhance CS-based AM through the modeling and planning of the robotic CS process. The work of this thesis consists of three parts.Firstly, efforts have been dedicated to design and implement a new framework for CSAM. In this part, a concept of modular system is presented. Here, the current CSAM system is decomposed into different modules in order to understand the physical and functional relationships between the key elements of the entire system. This physical and functional modularity is an indispensable necessity to promote hybrid AM processes. New modules, such as in-situ measurement module, inter-process module can be integrated into the framework to bring more possibilities to the conventional CS process. It is revealed that system modularity is suitable to revolutionize the CSAM method and conduction. It can be seen that to fully exert the potential of CSAM, efforts are still required to integrate and coordinate more technologies with the help of the proposed modular framework.Secondly, a novel approach is presented to simulate the CS deposition. Here, a three-dimensional geometric model of the coating profile based on Gaussian distribution is developed. The model is combined with robot trajectory and processing parameters to simulate the evolving CS deposits. In addition, it can offer accurate profile prediction in the robot off-line programming platform, especially in case of shadow effects, which enables the integration of robot programming with simulation to better control the coating process. The results of both numerical and experimental verifications show that this proposed method has a good prediction accuracy for practice.At last, compared with the current bulk-based volume-forming strategy (e.g. a tessellation-based method), this study proposes a new spray strategy that considers the characteristics and kinematic parameters of cold spray to enhance stable layer building for 3D shape forming. Both simulation and experiments are conducted for method verification. Layer built benchmarking test objects have better shape accuracy than that of existing methods. This implies that the proposed method makes CS a real and layer-by-layer ready AM process for 3D shape forming
Shiwakoti, Rochak. "Design and Analysis of Modular Axial Flux Switched Reluctance Motor." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2680.
Повний текст джерелаJonasson, Jack, and Jens Ottosson. "Utveckling av insatsmodul till en Arcam S12 EBM-maskin : För möjliggörande av småskaliga tester med mindre pulveråtgång." Thesis, Mittuniversitetet, Avdelningen för kvalitets- och maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-38227.
Повний текст джерелаThis thesis work is focused on the product development of an insert module for an ARCAM S12 Electron Beam Melting machine The need for an insert module comes from the fact that the machine requires a full tank of building material to operate as intended. With concern to the large building volume the original machine cannot be seen as a viable alternative for materials research, because such research often uses expensive experimental materials. The goal for the module is therefore to lower the use of building material, and trough that make the machine viable for materials research without permanently affecting the original function. Another important function of the new module is the possibility to control and synchronize the amount of material dispensed between layers of the build. During the length of the thesis, the entire development process of the module is discussed. From the target specification, to the finished blueprints. The process started with the establishment of a target specification, followed by a phase of concept development containing both creative and stringent methods. After these concepts had been evaluated and culled through structured methods a final concept was selected. This concept was then modeled in Solid Works and technical drawings of the model was made for the blueprint. The result of the thesis work is a finished blueprint for an insert module that fits an ARCAM S12 EBM machine. This module has lowered the build volume to 110x110xthe build height in millimeters, and has the possibility to synchronize the amount of material dispensed between layers.
Betyg 190909
Argoud, Ana Rita Tiradentes Terra. "Procedimento para projeto de arranjo físico modular em manufatura através de algoritmo genético de agrupamento." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18145/tde-16052007-182755/.
Повний текст джерелаThe objective of this thesis was the development of a procedure to the design of modular facility layouts. The procedure uses a clustering genetic algorithm to generate layout modules. A module is a group of machines with a specific patterned flow. The clustering genetic algorithm (CGA) allows the specification of the desired number of modules (K-grouping problem) and also the optimization of the number of modules (automatic clustering problem). The genetic algorithm is very flexible and the user can guide his reasoning. It supplies different options of chromosome encoding, generation of the initial population, fitness function to evaluate the solution quality, different similarity measures for comparison of operation sequences and methods for generation of the new population. Three crossover operators and four mutation operators have been developed. The experiments have allowed evaluating the behavior of the CGA with different operators and parameters configurations, through the number of times in which the best solution was found. The layout modules generated by the CGA and the block layout were compared with the main reference which was found in literature in the design of modular facility layouts. In the block layout elaborated from the solutions of the CGA there was an important reduction of the total distance traveled by the set of parts, demonstrating the effectiveness of the clustering genetic algorithm. The results indicated that the clustering genetic algorithm is an alternative for generation of layout modules in the design of modular facility layouts.
Farhan, Uday H. "An integrated computer-aided modular fixture design system for machining semi-circular parts." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/555.
Повний текст джерелаCruz, Diogo Luiz Lemes da. "Metodologia para implementação de controle supervisório modular local em controladores lógicos programáveis." Universidade do Estado de Santa Catarina, 2011. http://tede.udesc.br/handle/handle/1910.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
Currently, manufacturing automation has assumed an increasingly important role within the industry and the problems of automated control systems have become increasingly complex. Thus, the traditional use of empirical methods heavily base on the experience of the programmer can lead to inappropriate or ineffective solutions. In this case, the Supervisory Control Theory (SCT) of Ramadge and Wonham (1989) cam be a suitable tool because it ensures the achievement of optimal control logic (minimally restrictive and nonblocking) and also that meets the specifications of control. This paper presents a methodology for implementation of SCT in Programmable Logic Controllers (PLCs). The modeling of the plant and the specification of control is done by automata and languages, and in order to exploit the modular nature of the plant and the specifications we use the local modular approach (QUEIROZ and CURY, 2000) for the synthesis of supervisors. The use of a formal methodology for implementing control system also allows to standardize in the development, testing and structure of the PLC code and obtain a free of errors solution and crashes, discarding the empirical methods. The methods of implementation of the TCS in PLC existing literature have the feature to limit the evolution of the system, often dealing with one event per PLC scan cycle. Also presented is a series of problems that can occur in the implementation of supervisors in control elements such as PLCs (FABIAN and HELLGREN, 1998). However, not all of these problems have solutions and for some of them are presented some properties that the modeling of the system must ensure in order to avoid such problems. This method treats all the uncontrollable events produced by the plant in just one PLC scan cycle. The also promotes the control of the plant at the end of cycle. The development of this methodology takes into account the possible problems when using the theory into practice. Thus providing solutions to the problems. In this case the solutions, Choice , stands out. It promotes the random generation of controllable events. One it is give priority to a particular event over another, it can cause the system to lock or be inoperative (MALIK, 2002). To facilitate the implementation of supervisory control structure in PLC, was created a computational tool for the automatic generation of control logic, based on the proposed methodology that converts the list generated by the software Discrete Event System (DES) in LADDER code. The validation of the results obtained with the tool generation was done through simulations for different problems of supervisory control.
Na atualidade, a automação da manufatura tem assumido cada vez mais um papel importante dentro das indústrias e os problemas de controle de sistemas automatizados têm se tornado cada vez mais complexos. Assim, o tradicional uso de métodos empíricos fortemente baseados na experiência do programador pode levar a soluções inadequadas ou ineficientes. Neste sentido, a Teoria de Controle Supervisório (TCS) apresentada por Ramadge e Wonham (1989) se mostra uma ferramenta adequada uma vez que garante a obtenção de uma lógica de controle ótima (minimamente restritiva e não bloqueante) e que satisfaz às especificações de controle. Este trabalho apresenta uma metodologia para implementação da TCS em Controladores Lógicos Programáveis (CLPs). A modelagem da planta e das especificações de controle é feita por autômatos e linguagens e no intuito de explorar a modularidade da planta e das especificações utiliza-se a abordagem modular local (QUEIROZ e CURY, 2000) para a síntese dos supervisores. O uso de uma metodologia formal para a implantação em sistemas de controle possibilita ainda uma padronização no desenvolvimento, teste e estrutura de códigos nos CLPs e obter uma solução livre de erros e bloqueios, fugindo dos métodos empíricos. Os métodos de implementação da TCS em CLP encontrados na literatura apresentam a característica de limitar a evolução do sistema, muitas vezes tratando um único evento por ciclo de varredura do CLP. Também, é apresentada uma série de problemas que podem ocorrer na implementação de supervisores em elementos de controle como CLPs (FABIAN e HELLGREN, 1998). Entretanto, nem todos os problemas apresentados são solucionados e para alguns deles são apresentadas propriedades que o modelo do sistema deve satisfazer para que tais problemas não se manifestem. Já a metodologia desenvolvida neste trabalho permite tratar em um mesmo ciclo de varredura do CLP todos os eventos não controláveis gerados pela planta, e ainda promover o controle da mesma a partir dos eventos controláveis gerados ao final desse ciclo. O desenvolvimento desta metodologia leva em consideração os problemas que podem ocorrer quando se utiliza a teoria na prática, apresentando uma solução para alguns desses problemas. Destaca-se a solução do chamado problema da escolha, cuja priorização indevida de eventos pode levar ao bloqueio ou tornar parte do sistema inoperante (MALIK, 2002). Como solução para este problema propõe-se uma escolha aleatória dinâmica para a geração dos eventos controláveis, evitando assim os problemas mencionados. Para facilitar a implementação da estrutura de controle supervisório no CLP foi criado um software de geração automática de código, que baseado na metodologia proposta, converte a listagem gerada pelo software de Sistema a Eventos Discretos (SED) em linguagem LADDER. A validação dos resultados obtidos com a ferramenta de geração de código foi realizada por intermédio de simulações feitas para diferentes problemas de controle supervisório.
Vestlund, Jimmy. "Streamlining tool design and manufacturing process for blancing and function test equipment to a propeller hub assembly." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-35176.
Повний текст джерелаSandahl, Pär, and Cornelia Broman. "Förbättringskoncept stålfront : Cibes A5000 plattformshiss." Thesis, Högskolan i Gävle, Maskinteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-36332.
Повний текст джерелаSteel fronts is Cibes most sought after frame and door combination to the public market such as schools, malls etc. because of the robust construction. However, there are problems with manufacturing efficiency, handling, and corrosion. The problems that arise are significantly connected to the construction being delivered from a subcontractor as a complete welded sheet metal construction. In addition, they are not designed to be installed in corrosive environments. Through preliminary investigations how today's manufacturing takes place and what is desired in the construction a QFD was made. By weighting, the QFD presented the most important qualities which the work should fulfill. The most important quality was that the construction must be modular, followed by reduced variation and corrosion resistant alternatives. With the help of idea generation methods, different concepts were developed, which all but the most promising were to be eliminated. The final concept includes a modular frame where variations of modules is 39 to maintain the same amount as today´s construction with 146 frame variations. Three materials were also con-cluded for possible application in different environments. Two of the materials have a lower price than the material used today (DC01 and DX51+Z275), in addition, two of them have a higher corrosion resistance (DX51 + Z275 and SS-EN 1.4404). The strength of the concept was verified with strength analysis supplemented with FE analysis. The developed concept leads to more efficient manufacturing process in that fewer products need to be stored and handled. However, the material prices and the strength of the concept are appreciated to a certain extent and need to be further verified.
Pierce, Daniel W. "Toward a comprehensive cost model for multichip module (MCM) manufacturing." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/11113.
Повний текст джерелаMichaelsen, Marcos Felipe. "Arc spray MID; a novel manufacturing technique for electronic modules." Thesis, University of Hertfordshire, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409460.
Повний текст джерелаKrautkramer, Carrie A. "Operations training modules for Liberty Check Printers' imprint manufacturing environment." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998krautkramerc.pdf.
Повний текст джерелаQuillerou-Grivot, Edwige. "Fonction psychologique et sociale du collectif pour la santé au travail : le cas de l’activité d’opérateurs de montage automobile." Thesis, Paris, CNAM, 2011. http://www.theses.fr/2011CNAM0792/document.
Повний текст джерелаThis thesis speaks about collective work of the operators of assembly in modular manufacturing unit and health building in this context of industrial work transformations. During an intervention in a company of car logistics, the last link of the chain of subcontracting at car industry, we proposed them to construct a clinical frame of activity in work psychology. So, volunteers’ operators were able to discover how much the experiences of the others - even those crossed punctually due to the turnover of the temporary workers - and the debates around the manners to make the other colleagues could become a resource for their own work. In spite of the difficulty to maintain a work of co-analysis with temporary operators, the operators could also became aware of their collective social function, during the last steering committee of our intervention. This double psychological and social process of the collective function at the operators allows creating new ways to transform their work, so participating in the development of their health
Madima, Takalani. "Manufacturing of synthetic soda ash." Thesis, University of the Western Cape, 2009. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6307_1284397464.
Повний текст джерелаThe aim of the project was to study the manufacturing of synthetic soda ash (sodium carbonate, Na2CO3) on an industrial scale. Currently all Soda ash that is used in South Africa for manufacturing glass is imported at a high cost, and the company Nampak Wiegand Glass (South Africa) is investigating the possibility to locally manufacture synthetic soda ash. About 75% of soda ash is synthetically produced from either the Leblanc process, Solvay process, Modified Solvay (Dual) process or dry lime process. This study concentrated on the Solvay process on a laboratory scale for eventual input into a larger pilot plant. The produced material was analyzed using analytical techniques such as FTIR (Fourier Transform Infrared spectroscopy), Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Inductively Coupled Plasma Atomic Emission spectroscopy (ICP-AES). There are certain standard requirements for impurities in the soda ash, and this needed to be measured and determined what changes to the process will bring the impurities to the required minimum standard. Environmental issues around the manufacturing process were also studied. After completing of the laboratory experiments and the extraction of required data from the results, Nampak will use the information to decide on a followup to the building of a small pilot plant to further test and develop the engineering and economical aspects of a full plant. If successful a full scale manufacturing plant can be developed in South Africa for producing soda ash. 
This study thus will not only help Nampak Wiegand Glass in finalizing the decision to go ahead, but its result will also benefit other companies that use the soda ash in oil refining, water treatment, pulp and paper, chemical industry etc. Some parts of the work done will be proprietary to Nampak and subject to confidentiality agreement.
Narayanan, Mukund. "HYBRID FLOW STRATEGIES FOR HIGH VARIETY LOW VOLUME MANUFACTURING FACILITIES TO IMPLEMENT FLOW AND PULL." UKnowledge, 2002. http://uknowledge.uky.edu/gradschool_theses/366.
Повний текст джерелаNguyen, Levy H. "The Data, The Generic, and the Architecture." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397477465.
Повний текст джерелаGhosh, Indrajit. "Lyocell Fiber-Reinforced Cellulose Ester Composites-Manufacturing Considerations and Properties." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/35023.
Повний текст джерелаMaster of Science
Burks, William Garret. "Modeling and Manufacturing of Dynamic Vocal Folds: First Steps Towards an Active Voice-Box Prosthesis." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96557.
Повний текст джерелаDoctor of Philosophy
The movement and control of the vocal folds within the voice-box enables three crucial physiological functions: 1) allowing respiration by opening, 2) aiding in airway protection and swallowing by closing, and 3) regulating sound production during vocalization. Although treatment options have improved, many of the estimated 7.5 million individuals in the United States who are annually affected by voice-related disorders still face serious challenges related to speech production and swallowing which often results in significant detrimental impacts to quality of life. The need for improved treatments is most easily observed in the evaluation of treatment options following a total laryngectomy, which is a procedure where the entire voice-box is removed often due to cancer. Following a laryngectomy, all three of the vital functions of the vocal folds are immediately impacted as patients adjust to breathing through and protecting a redirected airway and are forced to use alternative methods of speech production which often result in monotone or robotic-sounding speech. The need for improved voice-disorder treatments has motivated the work presented in this dissertation which focuses on modeling and manufacturing the vocal folds and aims to answer three main questions: 1) what are the mechanical properties of the vocal folds? 2) how do those properties influence the dynamic behavior of the tissue during sound production? and 3) can we manufacture synthetic vocal folds that produce a desired and controllable dynamic behavior? Sixteen porcine vocal fold samples were mechanical tested to evaluate the elastic properties of the tissue. Next, porcine voice-box samples were experimentally tested in a way that simulated sound production by subjecting the samples to a heated and humidified air flow, similar to the air flow conditions coming out of the lungs. In this way, the relationship between the tissue properties and the frequencies of sound was investigated. Lastly, the synthetic vocal fold samples were evaluated using a similar experimental protocol to further investigate the impact of changing structural properties on the dynamics of the vocal folds during sound production.
Racca, Stephen Douglas. "Improving operational efficiency of a semiconductor equipment manufacturing warehouse through effective utilization of Vertical Lift Modules." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101335.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 59-60).
This thesis deals with improving the operational efficiency of automated part storage devices, in this case Vertical Lift Modules (VLM). This was accomplished by using dynamic slotting to maximize and maintain high material throughput, eliminating the need for periodic reslotting. Multiple VLMs can be used in parallel picking operations to improve material throughput. Common industry practice is to periodically reslot items once an unbalanced workload is obvious. This thesis investigates a method to avoid periodic reslotting by using incoming parts as a means to maintain a balanced workload amongst VLMs. Three different part allocation strategies are compared, namely Randomization, Snake and Order Grouping to determine their effectiveness and respective feasibility. The three strategies are then crafted into logical systems that could be used to strategically place received parts and eliminate the need for periodic reslotting. The Snake method was found to be the most well suited for this particular situation due to the small order sizes. This method provides a 35% savings in pick time, which is equivalent to approximately 733 hours annually.
by Stephen Douglas Racca.
M. Eng. in Manufacturing
Huang, Heng. "Facility layout using layout modules." Columbus, OH : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1059074390.
Повний текст джерелаTitle from first page of PDF file. Document formatted into pages; contains xii, 156 p. : ill., (some col.). Includes abstract and vita. Advisor: Shahrukh A. Irani, Dept. of Industrial and Systems Engineering. Includes bibliographical references (p. 147-156).
Cohen, Elana Ann 1978. "Image engine study : strategic dynamic control for low volume potentially high mix modules." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/34794.
Повний текст джерелаIncludes bibliographical references (p. 118-120).
The main goal of this project was to provide a case study on image engines for the purpose of developing a supply chain strategy. Initially, the current digital image engine manufacturing core competencies and respective capabilities were further defined and documented. Value chain maps were then developed for each line of business to assess Kodak's transition from analog to digital. The value chains clearly illustrate a lower reliance on consumables (including silver halide film and paper), and demonstrate an emerging capability in the digital equipment market. As image engine performance directly impacts the level of digital image quality, the study concludes that strategic dynamic control of these image engines is critical in order to maintain future competitive advantage.
by Elana Ann Cohen.
M.B.A.
S.M.
Mavros, Nicholas C. "Advanced Manufacturing of Titanium Alloys for Biomedical Applications." Cleveland State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu1527771497260907.
Повний текст джерелаYan, Bing Wen. "Evaluating employee responses to the lean enterprise system at a manufacturing company in Cape Town, South Africa." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&.
Повний текст джерелаThere is usually much reaction among employees when a new system is introduced in an organization. These things are intended to improve performance but sometimes cause considerable controversy amongst the employees and management. This study examines the implementation of LE and it attempts to analyse the reactions of employes in a manufacturing company in South Africa - GKN Sinter Metals (GKN), Cape Town. According to the literature review, the implementation of the LE can play a significant role in improving the company's performance.
Wang, Neng. "A combined computational and experimental study of heterogeneous fracture." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53982.
Повний текст джерелаMota, Likese Angelinah. "Analyzing the relationship between the Gross Domestic Product (GDP) of Lesotho and manufacturing :1997to 2007." Thesis, University of the Western Cape, 2009. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_4707_1297857069.
Повний текст джерелаThe study draws on secondary data from the Bureau of Statistics in Lesotho. Simple and multiple linear regression models techniques are used to analyze the relationship between the GDP of Lesotho and the GDP of manufacturing. The secondary data is analyzed using Statistical Packages for Social Sciences (SPSS) and Excel. The major finding is that there exists a strong positive linear relationship ( r = 0.986) between the GDP of Lesotho and the GDP of manufacturing. This means that every time the GDP of manufacturing increases the GDP of Lesotho does the same. Based on this finding, the study recommends that in order to improve, sustain and maintain the economic growth and to avoid further deterioration in the manufacturing industry, the manufacturing capacity must be strengthened for it to effectively deal with growing competition and rapid economic changes.
Voit, Walter Everett. "Optimization of mechanical properties and manufacturing techniques to enable shape-memory polymer processing." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/37136.
Повний текст джерелаRusia, Devendra Kumar. "A modified viscoplastic formulation for large deformations using a bulk modulus approach." Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183058011.
Повний текст джерела