Teses / dissertações sobre o tema "Conception hybride"
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Colmenares, vazquez Josue. "Conception et navigation d'un véhicule hybride terrestre et aérien". Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT044/document.
Texto completo da fonteThis works is focused in the conception of a hybrid vehicle with the ability to fly or roll over the ground when necessary. A revision of the present prototypes is made and then a new prototype is proposed with enhanced characteristics. The prototype consists of a quadrotor with two additional passive wheels without any other additional servomechanism. The modeling of each operation mode is exposed and then a model for the hybrid form is proposed. In the next section, some control algorithms have been developed for each operation mode: on ground or in air. These algorithms are validated via numerical simulation in the first instance. The last section describes the MOCA room and the system used for capturing the position and attitude of the vehicle. Also, experimental tests were made in order to validate the developed control strategies. It was also validated that the vehicle can follows aerial and terrestrial trajectories. Finally, an observer is implemented in order to identify the moment when the vehicle touches the ground. This knowledge is used to switch from air mode to ground mode without the need of additional sensors
Jedrkiewicz-Owczarek, Floriane. "La formation hybride : entre conception et usage". Thesis, Paris 1, 2022. http://www.theses.fr/2022PA01E012.
Texto completo da fonteThe concept of hybrid training, combining activities in presence and distance, most often supported by a digital platform, before 2020 was a niche solution, little recognized. It was forcibly democratized with the covid-19 pandemic, even forcing the emergence of a new form of hybridization where the two modalities merge. The first definition of hybrid training appeared in 1995, written by Didier Valdès in his thesis for Paris 2 Panthéon Assas. He pointed out a certain number of criteria essential to the design of such training. However, the historiography concerning the study of these, from a erspective of definition, evaluation and design, was quickly turned upside down by the emergence of web 2.0. The design criteria adopted became more and more numerous and technical, the authors interviewing only a part of the actors (teachers or students), without a global vision and without taking into account their real activity. This approach, not integrating the activity of their operators, leads to complex hybrid training courses to be followed both for students and teachers, who may even be resistant to Information and Communication Technologies (ICTs). ) employees, or even to training in general. We are therefore looking to observe a hybrid training taking into account the activity of the operators, in order to deduce design tracks more in line with it. We employ an ethnocentric methodology, based on the theoretical framework of the activity, with an associated method - in particular the notions of prescribed and real. We thus seek to go beyond the usual dichotomies with machine / without machine, and presence / distance. We refer particularly to the activity theory developed by Yrjö Engeström, and to the instrumental theory of Pierre Rabardel. We observe a hybrid module of initiation to information and Pix certification within a university course More specifically, we have retained for the analysis a chapter of the course comprising a 1h30 face-to-face session and work to be done remotely. All the data available over this observation period is used, i.e. a heterogeneous set including open observations in class, video recordings, interviews carried out with users and designers, questionnaire for students, collection of emails from the teacher, data generated through the IT platform, and presence on student workspaces and exchanges such as Facebook and Google Drive. These data are combined in quantitative and qualitative ways, and analyzed through the production of detailed chronologies, Engeström contradiction tables, and a revised version of Gaëtan Bourmaud's Method of Failures and Substitutions of Resources (MDSR). We highlight a clear gap between prescribed and actual training (that is to say between training designed and in situ), resulting from a design in use carried out by the actors - teachers and students. This implies paradigm shifts, particularly with regard to student autonomy, the objective of the training which disrupts the position of the teacher. This conception in use is the result of a collective work of the operators (teacher and students), practically leading to a redesign of the training according to the needs actually felt. The design of a hybrid training in accordance with this activity would thus suppose to use the distance for what it is, in order to facilitate the creation of a community of university learning
Echalier, Cécile. "Conception de matériaux hybrides peptidiques biomimétiques". Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT213.
Texto completo da fonteWe designed and developed a method for the preparation of hydrogels through the sol-gel process. It is based on (bio)organic-inorganic hybrid blocks obtained by functionalization of synthetic polymers or bioactive molecules, such as peptides, with silyl groups (triethoxysilanes or hydroxydimethylsilanes). These hybrid blocks can be combined in desired ratio and engaged in the sol-gel process to yield multifunctional hydrogels. Gelation proceeds at 37°C at pH 7.4 in a physiological buffer. Hydrolysis and condensation of silylated precursors result in a three-dimensional covalent network in which molecules are linked through siloxane bonds. First, this method was applied to the synthesis of PEG-based hydrogels. Then, we demonstrated that hydrogels could be covalently functionalized during their formation. Thus, hydrogels exhibiting antibacterial properties or promoting cell adhesion were obtained. Secondly, a hybrid peptide whose sequence was inspired from natural collagen was synthesized and used to prepare hydrogels that provided a cell-friendly environment comparable to natural collagen substrates. Stem cells could be encapsulated in these hydrogels with high viability. Finally, hybrid hydrogels were used as bio-inks to print 3D scaffolds. This PhD work highlights the potential of the sol-gel chemistry for the design of tailor-made biomimetic scaffolds that could be particularly promising for tissue engineering applications
Di, Pendina Grégory. "Conception innovante et développement d'outils de conception d'ASIC pour Technologie Hybride CMOS / Magnétique". Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT035/document.
Texto completo da fonteFor several years many non-volatile technologies have been appearing and taking place mainly in the memory world, aiming at replacing all kind of memory. Their assets let thinking that some of them, specially the MRAM technologies, could improve the integrated circuit performances, using their so called magnetic components in the logic, in particular the magnetic tunnel junctions. To evaluate the potential benefits, it is necessary to be able to design such a circuit. That is the reason why we are proposing a full design kit for both full custom and digital designs, allowing all the design steps. Part of this kit has been used by partners in research project to design demonstrators. We also propose in this kit an innovative ultra-compact magnetic latch, for which 2 patents have been deposited, integrated in a flip-flop. Finally, we present the integration of magnetic components for two applications, security and low power, as well as a case study which shows that the static consumption reduction can be huge
Di, pendina Gregory. "Conception innovante et développement d'outils de conception d'ASIC pour Technologie Hybride CMOS / Magnétique". Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00750121.
Texto completo da fonteGaidamour, Jérémie. "Conception d'un solveur linéaire creux parallèle hybride direct-itératif". Phd thesis, Université Sciences et Technologies - Bordeaux I, 2009. http://tel.archives-ouvertes.fr/tel-00456605.
Texto completo da fonteThorel, Sylvain. "Conception et réalisation d'un drone hybride sol/air autonome". Thesis, Paris, ENMP, 2014. http://www.theses.fr/2014ENMP0054/document.
Texto completo da fonteThis thesis is dedicated to the non-linear control of a special hybrid quadrotor which is able to fly, and slide on the ground like an hovercraft. In the context of an autonomous indoor exploration this hybrid concept allows saving energy when flying is not necessary, since the drone can then slide on the ground without having to compensate for the gravity; autonomy can last beyond the 20 minutes typical of a standard quadrotor. Contrarily to wheeled mobile robots, the hybrid drone ability to move across space is strongly increased since it can fly to avoid obstacles, to move between two levels, to get in through a window. The study under consideration is essentially focused on the displacement of the drone on the ground and aims at designing and implementing a control law so that our system is able to track a 2D xy plane trajectory. This terrestrial quadrotor is similar to a slider underactuated vehicle. The point stabilisation is then separately studied from the trajectory tracking issue because of the Brockett condition, which is not satisfied in that case; our platform cannot be stabilized by means of continuous state feedbacks. This thesis proposes different theoretical developments based on the literature and deriving from time varying control laws, transverse functions, flatness or backstepping techniques to solve both point stabilisation and trajectory tracking. The experimental part of the thesis is based on the recovering of the drone position in real time and orientation via a Motion Capture system for feedback loop in the control law; the proposed dynamical model was validated as well as the control and command laws for the tracking of a circular trajectory
Wang, Xiaohui. "Dfkn : un modèle hybride de connaissances pour la conception". Valenciennes, 1998. https://ged.uphf.fr/nuxeo/site/esupversions/61efe636-d96f-4210-a7c2-a6a427246cfa.
Texto completo da fonteGaidamour, Jérémie. "Conception d’un solveur linéaire creux parallèle hybride direct-itératif". Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR13904/document.
Texto completo da fonteThis thesis presents a parallel resolution method for sparse linear systems which combines effectively techniques of direct and iterative solvers using a Schur complement approach. A domain decomposition is built ; the interiors of the subdomains are eliminated by a direct method in order to use an iterative method only on the interface unknowns. The system on the interface (Schur complement) is solved thanks to an iterative method preconditioned by a global incomplete factorization. A special ordering on the Schur complement allows to build a scalable preconditioner. Algorithms minimizing the memory peak that appears during the construction of the preconditioner are presented. The memory is balanced thanks to a multiple domains per processors parallelization scheme. The methods are implemented in the HIPS solver and parallel experimental results are presented on large industrial test cases
Liscouet, Jonathan. "Conception préliminaire des actionneurs électromécaniques : approche hybride, directe/inverse". Thesis, Toulouse, INSA, 2010. http://www.theses.fr/2010ISAT0001/document.
Texto completo da fonteThe aim of this thesis is to propose innovative methods for the preliminary design of electromechanical actuators (EMA), and to implement them in software tools rapidly available for the industry. This objective is motivated by a strong demand of the industry, especially in aeronautics within the frame of the development of more electric aircrafts. First, this thesis puts forward a hybrid methodology (top-down/bottom-up) to generate and select systematically architectures with respect to requirements and the state of the art of technology. Second, methods to evaluate architectures in terms of power, integration (geometrical envelop and mass), reliability and closed loop performances are developed. The implementation of these methods is based on non-causal modelling combined to direct and inverse numerical simulations. Scaling laws, representative of the main sizing phenomena, are established to reduce the complexity of the models and the need for domain experts during the preliminary phases. The proposed methods and their implementation within the simulation framework Modelica/Dymola have been applied successfully to the examples of electromechanical actuators for the steering of a nose landing gear, the primary flight control of an aircraft and the thrust vector control of a space launcher. As a result, the duration of the architecture evaluation has been reduced from day-scale to hour-scale
Thounthong, Phatiphat. "CONCEPTION D'UNE SOURCE HYBRIDE UTILISANTUNE PILE A COMBUSTIBLE ET DESSUPERCONDENSATEURS". Phd thesis, Institut National Polytechnique de Lorraine - INPL, 2005. http://tel.archives-ouvertes.fr/tel-00083105.
Texto completo da fontesupercondensateurs, destiné à fonctionner dans un véhicule à pile à combustible sont
présentés dans cette thèse. Deux modes de commande sont détaillés. Leur but est de permettre
un fonctionnement en quasi-statique de la pile à combustible afin de limiter les contraintes
mécaniques sur la pile en accordant les débits de gaz à la demande en courant. Les
supercapacités interviennent lors du non-fonctionnement de la pile, lors de régimes
transitoires ou de régimes de récupération.
Le dispositif développé utilise deux modules de supercapacités SAFT. Il est connecté à un bus
continu 42 V par un convertisseur continu-continu deux quadrants, la pile à combustible étant
connectée au bus continu par un convertisseur élévateur. Le contrôle des courants est réalisé
de manière analogique. Le contrôle des tensions et les algorithmes d'estimation utilisent une
carte numérique dSPACE. Les résultats expérimentaux présentés, obtenus avec une pile de
500 W, ont souligné la lenteur naturelle des réponses de la pile à combustible et l'apport des
supercapacités pour des applications automobiles. Celles-ci améliorent grandement la
dynamique et le contrôle énergétique du système.
Akkouch, Adil. "Conception et validation d'un biomatériau hybride pour la régénération osseuse". Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/28915/28915.pdf.
Texto completo da fonteBrum, Raphael Martins. "Conception hybride CMOS et mémoires magnétiques : applications aux architectures programmables". Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20141.
Texto completo da fonteWith the downscaling of the CMOS technology, it is becoming increasingly difficult to design power-efficient and dense static random-access memories (SRAM). In the last two decades, alternative memory technologies have been actively researched both by academia and industry. Among them, STT-MRAM is one of the most promising, having near-zero static power consumption, competitive performance with respect to SRAM and easy integration with CMOS fabrication processes. Furthermore, MRAM is a non-volatile memory technology, providing for new features and capabilities when embedded in reconfigurable devices or processors. In this thesis, applications of MRAM to embedded processors and field-programmable gate-arrays (FPGAs) were investigated. A comparison of several self-referenced read circuits, with application for both memory arrays and sequential cells is provided, based on MTJ compact models provided by our project partners. To demonstrate the feasibility of the proposed circuits, we laid-out and fabricated independent, self-contained sequential cells and a hybrid, multi-context CMOS/MTJ memory array, using state-of-the-art 28nm FDSOI CMOS technology, combined with a 200nm perpendicular STT-MTJ process. Finally, we used these building blocks to implement instant on/off and backward-error recovery capabilities in an embedded processor. Results obtained by simulation allowed us to verify that these features have minimal impact on performance. An initial layout implementation allowed us to estimate the impact on silicon footprint, which could be further reduced by improvements in the MTJ integration process
Loukakou, Destiny, Christophe Espanet e Frédéric Dubas. "Modélisation, Conception et Expérimentation d'un véhicule hybride léger pour usages urbains". Phd thesis, Université de Franche-Comté, 2012. http://tel.archives-ouvertes.fr/tel-00862360.
Texto completo da fonteBultey, Alexis. "Représentation hybride des heuristiques et métaconnaissances utilisées pour la conception innovante". Strasbourg, 2009. http://www.theses.fr/2009STRA6106.
Texto completo da fonteThis PhD thesis is about a theoretical and practical analysis of the conceptual phases of the design process. It aims at extracting its recurrent elements in order to be reusable in different contexts and it also aims at making that process easily computer implemented. With this goal, we have studied the russian theory TRIZ, which pretends to formalize the inventive process. We conclude that this theory has a great interest for design process and we prove that this theory might be implemented in a computer-aided design system. The results of this PhD thesis can be decomposed in three parts: formalization, operationalisation and implementation. Formalization suggests an ontological modelling of one of the TRIZ methodologies, named Substance-Field analysis. Operationalisation proposes a translation of the formalization to be supported by a computer. The implementation is a software tool based on a hybrid system combining description logics and first order logic rules
Kriaa, Hassen. "Analyse et conception révisable par interaction entre agents : Une approche hybride". Pau, 2000. http://www.theses.fr/2000PAUU3011.
Texto completo da fonteALO, DIDIER. "Modelisation et conception d'une thermo-frigo-pompe hybride a compression absorption". Nantes, 1995. http://www.theses.fr/1995NANT2037.
Texto completo da fonteBouzgarrou, Belhassen Chedi. "Conception et modélisation d'une machine-outil à architecture hybride pour l'UTGV". Clermont-Ferrand 2, 2001. http://www.theses.fr/2001CLF21325.
Texto completo da fonteLoukakou, Bounzeki Mbemba Destiny Conscience Eland. "Modélisation, conception et expérimentation d'un véhicule hybride léger pour usages urbains". Phd thesis, Université de Franche-Comté, 2012. http://tel.archives-ouvertes.fr/tel-00947630.
Texto completo da fonteSchaep, Thomas. "Conception et commande optimale d’une architecture hybride hydraulique de reach stacker". Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI121/document.
Texto completo da fonteThe continuously increasing of the intercontinental trade as well as the globalization lead to the need of higher productivity for ports and container terminals. In order to fulfill the need of competitiveness of terminal operators and in the same time respect the environmental legislation, container handling machine manufacturers are developping new solutions. Hybridization of energy sources is an interesting way but using more energy efficient actuation lines is also suitable. As a consequence, specifications are more and more complex, and can in particular have heterogeneous natures. In this thesis, the focus is made on two main topics linked to those problematics. On the one hand, a methodology concerning the sizing of over-actuated systems thanks to a coupling between inverse problems and dynamic optimization is exposed. On the other hand, the design, control strategies and an experimental validation of an hybrid actuation line applied to an container handling machine is presented. First of all, we propose a new procedure based on the bond graph language allowing the designer to take into account simultaneously two types of specifications, namely a cost function to minimize and functions of time specifying desired outputs of the system. This results in a coupled problem of state-space inversion and optimization. The procedure lead to a bond graph from which it is possible to directly derive the analytical system of the problem. The fundamental theory for proving the effectiveness of this procedure is carried out using the port hamiltonian systems. The bond graph representation of an optimal control problem is then extended to systems involving non linearities on dissipative R elements. In a second part, a new actuation architecture is proposed for a container handling machine, in order to improve the fuel efficiency. On the one hand, a transformer based system to recover the potential energy released during container lowering is exposed. This energy is stored into a hydropneumatic accumulator. Then, it is returned thanks to an extra hydraulic motor coupled to the engine shaft. On the other hand, a resizing of the main hydraulic pumps as well as a more suitable control law is proposed in order to make the engine work at better efficiency points. All those evolutions previously mentionned give now the possibility to perform kinetic energy recuperation during vehicle deceleration without adding any major component. The new architecture combined with more effetive control laws lead to a fuel consumption reduction of 16% up to 18%. Finally, the potential energy recovery system is validated on a test rig. The control laws are implemented and the dynamic and energetic performances are then analysed
Ziani, Mina. "Conception d'une ontologie hybride à partir d'ontologies métier évolutives : intégration et alignement d'ontologies". Thesis, Lyon 3, 2012. http://www.theses.fr/2012LYO30081.
Texto completo da fonteThis thesis concerns the scope of knowledge management using ontological models.To represent domain knowledge, we design a hybrid ontology on two levels: In a local level, each experts’ group has designed its own ontology. In a global level, a consensual ontology containing all the shared knowledge is automatically created.We design a computer-aided system to help experts in the process of mapping creation. It allows experts to choice similarity measures relatively to the ontology characteristics, to reuse the calculated similarities and to verify the consistency of the created mappings.In addition, local ontologies can be updated. This involves modifications in the global ontology and on the created mappings. A relevant approach of our domain was developed.In particular, ontology versioning is used in order to keep a record of all the occurred modifications in the ontologies; it allows to return at any time a previous version of the hybrid ontology.The exploited domain is geotechnics which gathers various business experts. A prototype is in progress and currently does not still captures ontology evolution
Ravey, Alexandre. "Conception et gestion de l'énergie des architectures pour véhicules hybrides électriques". Phd thesis, Université de Technologie de Belfort-Montbeliard, 2012. http://tel.archives-ouvertes.fr/tel-00863541.
Texto completo da fonteBuffo, Marc. "Contribution à la conception, par validation numérique et expérimentale, et l’optimisation pour l’aéronautique de contacteur hybride haute tension DC". Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0024/document.
Texto completo da fonteThe main goal of the more electrical aircraft is to substitute the different kind of transmission for the aeronautical power by electrical transmissions. The electric network has to evolve. This concept inspires the project AEROCOTS, which a part lies in the modification of the breaking means thanks to a hybrid contactor with an electrical circuit. To better understand what occurs between the contacts of the contactor and verified the absence of an electrical arc, a characterization method is employed to have a complete parameterized model of a contactor. Two electrical circuits are studied and the absence of an arc is verified. Their principle is to reduce to zero the current before the opening of the contactor. Their functioning and their models are experimentally verified. The choice of the second circuit is justified by a control of the opening current. An evolutionary algorithm, principle of the Darwin's theory, is realized to answer to the aeronautical objectives
Usai, Giulia. "Conception et Fabrication hybride 3D monolithique de relais NEMS co-integrés CMOS". Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT069.
Texto completo da fonteThis manuscript focuses on Nano-Electro-Mechanical (NEM) relays with electrostatic actuation for advanced logic and memory applications. The use of Nano-Electro-Mechanical relays was recently proposed for digital logic circuits in order to overcome the fundamental energy-efficiency limitations that mainstream CMOS technology is currently facing. The cumulated benefits of essentially Zero Off-State current and ultimately abrupt DC switching characteristics enable alleviating the power-performance trade-off as the supply voltage VDD is reduced. Additionally, for some particular switch designs (e.g. free of dielectric layers), an increased resistance to ionizing radiations is also anticipated, making such components valuable for defense or aerospace applications.However, NEM relays have intrinsic limitations in terms of integration density, endurance and operation frequency. Therefore, rather than considering them as technology that could replace MOSFETs, we adopt an intermediate approach that consists in using NEM relays as a complement to CMOS circuits (e.g.: buffers, non-volatile elements for SRAM and CAM), which can be fabricated in a 3D co-integration scheme. This approach mitigates the area penalty issue.The thesis explores the strength and the weakness of NEMS relays and identifies applications for which hybrid NEMS/CMOS circuits are potentially interesting.This work includes the manufacturing of prototype devices designed to be proof of concept for the identified applications. At first, NV NEM relays design and dimensioning through modelling and simulations was performed. Then NV NEM/CMOS circuits were validated trough simulations. This was followed by the tapeout and the process integration of monolithically co-integrated NEMS above CMOS. After wafer processing the devices were electrically characterized.This all-inclusive works allows identifying some crucial challenges that NEMS relays still have to face
Thounthong, Phatiphat. "Conception d'une source hybride utilisant une pile à combustible et des supercondensateurs". Vandoeuvre-les-Nancy, INPL, 2005. http://docnum.univ-lorraine.fr/public/INPL/2005_THOUNTHONG_P.pdf.
Texto completo da fonteThe design and testing of a purely supercapacitor energy storage device as auxiliary power source in electrical vehicle applications having a PEM fuel cell as main source are presented. Two control strategies are explained to operate in almost steady state conditions in order to lessen the mechanical stresses of fuel cell and to ensure a good synchronization between fuel flow and fuel cell current. Supercapacitors are functioning during absence of energy from fuel cell, transient energy delivery or transient energy recovery. The system utilizes two modules of supercapacitive storage device connected to the DC bus by a 2-quadrant dc/dc converter. The system structure is realized by analogical current loops and digital control for voltage loops and estimation algorithms. Experimental results with a 500 W PEM fuel cell point out the slow dynamics of fuel cell, and also substantiate that the supercapacitors can improve dynamics and power conditioning for automotive electrical system
Thounthong, Phatiphat Davat Bernard. "Conception d'une source hybride utilisant une pile à combustible et des supercondensateurs". Vandoeuvre-les-Nancy : INPL, 2005. http://www.scd.inpl-nancy.fr/theses/2005_THOUNTHONG_P.pdf.
Texto completo da fonteBen, Abdelghani Hafedh. "Étude, conception et réalisation d'un convertisseur statique hybride multiniveaux tolérant aux défauts". Thesis, Toulouse, INPT, 2016. http://www.theses.fr/2016INPT0042/document.
Texto completo da fonteGiven the importance of power converter safety operation in several fields (electric traction, renewable energy, etc ..), it is necessary to examine availability of these systems in the case of malfunction of an IGBT module, a converter leg or a phase machine. Thus, it is essential to develop new hardware architectures and software controls capable of operating at significant power after fault occurence. This thesis deals with a new multilevel fault tolerant hybrid topology. It consists on adding to a 3-phase 3-level NPC (Neutral Point Clamped) inverter, a fourth 3-level FC (Flying Cap) leg. New techniques of fault tolerance parts, namely detection, isolation, reconfiguration and system control during post fault mode, are proposed, analyzed and validated with a 15kW experimental converter prototype
Barzaj, Yasmin. "Conception d'une architecture hybride pour l'instrumentation et l'étude du comportement des 2RM". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS119.
Texto completo da fonteIn this thesis, we propose a new technic to identify a hybrid system for Data Acquisition,by using ad-hoc sensors on the vehicle, the sensors in the recent smartphones, MBED and CAN-BUS. The assumption is that the Smartphone's sensors will reduce the complexity and the high cost of these instrumentations. The objective is obtaining acceptable measurement accuracy of the collected trajectories and enable for a large-scale deployment of the system's instrumentation, such as a helpful system in the domain of transport. Weshow in this thesis how to build a hybrid system by depending on the properties of the used sensors in both the smartphones and in the vehicles to identify several situation like a failure sensor, accident situation and Rider's behaviour. This system is tested and evaluated on several real time on line - off- line including the used mode and method
Buffo, Marc. "Contribution à la conception, par validation numérique et expérimentale, et l’optimisation pour l’aéronautique de contacteur hybride haute tension DC". Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0024.
Texto completo da fonteThe main goal of the more electrical aircraft is to substitute the different kind of transmission for the aeronautical power by electrical transmissions. The electric network has to evolve. This concept inspires the project AEROCOTS, which a part lies in the modification of the breaking means thanks to a hybrid contactor with an electrical circuit. To better understand what occurs between the contacts of the contactor and verified the absence of an electrical arc, a characterization method is employed to have a complete parameterized model of a contactor. Two electrical circuits are studied and the absence of an arc is verified. Their principle is to reduce to zero the current before the opening of the contactor. Their functioning and their models are experimentally verified. The choice of the second circuit is justified by a control of the opening current. An evolutionary algorithm, principle of the Darwin's theory, is realized to answer to the aeronautical objectives
Ciccione, Jeremie. "synthèse de peptides silylés pour la conception de matériaux hybrides". Thesis, Montpellier, Ecole nationale supérieure de chimie, 2015. http://www.theses.fr/2015ENCM0018/document.
Texto completo da fonteThis thesis is dedicated to the synthesis of hybrid peptides functionalized with one or more silane groups and their use for the preparation of hybrid materials. Two precursors were developed: triethoxysilane and chlorodimethylsilane peptides.The first part of the manuscript deals with the synthesis of triethoxysilylated peptides as ligands of receptors over-expressed in tumor cells. They were used for the multi-functionalization of fluorescent silica nanoparticles prepared by sol-gel process. An original fluorine-NMR method was developped to demonstrate and quantify the efficiency of the grafting. To investigate the tumor targeting ability, the nanoparticles were assayed against different cell lines by flow cytometry. At last, in order to use mesoporous silica nanoparticles as a delivery system, a shell of hybrid peptides, which sequence was chosen as substrate of peptidases, was anchored to the surface. The release of a fluorescent cargo was studied.The last part of the manuscript describes a new class of silicone-containing peptide dimers or polymers obtained by a straightforward polymerization in water using tailored chlorodimethylsilyl peptide blocks as monomeric units. Different architectures were obtained including linear and comb-like polymers.On the contrary of post-functionalization strategies relying on multi-step synthesis, the use of hybrid peptide and sol gel process allows an easy and controlled access to tunable new biomaterials, in soft conditions, with a high versatility
Akli, Cossi Rockys. "Conception systémique d'une locomotive hybride autonomeApplication à la locomotive hybride de démonstration et d'investigations en énergétique LHyDIE développée par la SNCF". Toulouse, INPT, 2008. http://ethesis.inp-toulouse.fr/archive/00000649/.
Texto completo da fonteIn the framework of the PLATHEE project, SNCF and LAPLACE laboratory are together involved with other partners in the design, the energy management and the sizing of a hybrid locomotive so-called LHYDIE. This hybrid locomotive integrates a diesel generator coupled with Ni-Cd accumulators and supercapacitors. Based on a "sequential design approach", starting from a pre-defined architecture, the first step deals with the synthesis of the energy management strategy followed by the system sizing. A second step of this study consists in a revision of the design process following a "simultaneous design approach" based on a systemic modelling coupled with a multi criteria optimisation tool. Design choices in terms of sizing and energy management are directly exploited and adapted on the LHYDIE locomotive prototype actually built in SNCF facilities
Varin, Chantal. "Conception d'un mélangeur sous-harmonique en circuit intégré hybride fonctionnant à 20 GHz". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0005/MQ42928.pdf.
Texto completo da fonteBérubé, Daniel. "Conception et simulation d'une alimentation hybride de secours pour un avion plus électrique". Mémoire, École de technologie supérieure, 2011. http://espace.etsmtl.ca/988/1/B%C3%89RUB%C3%89_Daniel.pdf.
Texto completo da fonteEl, Chammas Rody. "Cycle Rankine adapté à un véhicule hybride : simulation et conception d'un premier démonstrateur". Paris, ENMP, 2005. http://www.theses.fr/2005ENMP1317.
Texto completo da fonteKuhn, Emmanuel. "Contribution à la conception optimale d'une motorisation hybride parallèle : Choix d'un modèle d'accumulateur". Compiègne, 2004. http://www.theses.fr/2004COMP1520.
Texto completo da fonteThis work deals with the dynamical and energetical modeling of a 42 V NiMH battery, the model of which is taking into account into a control law for an hybrid electrical vehicle. Using an inventory of the electrochemical phenomena, an equivalent electrical scheme has been established. Ln this model, diffusion phenomena were represented using non integer derivatives. This tool leads to a very good approximation of diffusion phenomena, nevertheless such a pure mathematical approach did not allow to represent energeticallosses inside the battery. Consequently, a second model, made of a serie of electric circuits has been proposed to represent energetical transfers. This second model has been used in the determination of a control law which warrants an autonomous management of electrical energy embedded in a parallel hybrid electrical vehicle, and to prevent deep discharge of the battery
Clady, Raphaël. "Conception d'une chaîne laser terawatt hybride à fort contraste dans le bleu-vert". Aix-Marseille 2, 2006. http://theses.univ-amu.fr.lama.univ-amu.fr/2006AIX22006.pdf.
Texto completo da fonteHien, Ngo Van. "Une méthode industrielle de conception de commande par automate hybride développée en objets". Aix-Marseille 3, 2001. http://www.theses.fr/2001AIX30082.
Texto completo da fonteControl systems of actual machines or actuators comprise models with discrete events and continuous behavior models; they are Hybnd Dynamic Systems (HDS). These behavior models are distributed on different operational modes, which are associated with processes related to the interactivity with users. In addition, controlled systems always do not have the same behavior because this one is associated with validation hypotheses to verify at any moment; there are modes different than the nominal mode. The behaviour of such systems is thus complex. The immersion in an industrial context makes that the designer and programmer must take into account costs and existing formalisms and languages. The re-use, modularity and specialization are elements to be associated with the production of a new application. Starting from these considerations, we present in this thesis an industrial method for the object oriented design of control systems using hybrid automata model. The retained formalism, which is used for the analysis and design phase, is hybrid automata. It is the common formalism to the worlds of software engineering and automation, which appeared to us the most relevant; but in its initial form, it could not answer completely to needs for a control system. These reasons led us to a development, which is based on invariants and guards of hybrid automata, allowing to avoid certain unacceptable situations of blocking of die automaton. To identify an application model, we use "use cases" to capture events and the extended functional diagram for the continuous processing. Security conditions of components and validity hypotheses make it possible to identify invariants related to states. To choose a language for covering from the analysis to the realization, the Unified Modeling Language (UML) appeared to us to be essential, bringing with its object-oriented design principles which are largely spread in the software industry. However, its notations are not sufficient to describe precisely the communication type between objects of a control system. This reason led us to choose the Real-Time UML version based on the'capsule' notation that we adapted by specializing a set of capsules in precise behaviors For the realization, we respected existing constraints by proposing beside direct translations of certain workshops towards C++ or Java, passage rules allowing to use the industrial programmable logic controllers languages of standard IEC 1131 and IEC 61499. .
Reinbold, Vincent. "Méthodologie de dimensionnement d’un moteur électrique pour véhicules hybrides : optimisation conjointe des composants et de la gestion d’énergie". Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT073/document.
Texto completo da fonteSince the development of computers and calculation capacities, the design of electrical components in electrical engineering is widely based on computing simulations and on numeral calculations. In complex systems, where numerous components interact for the working of the system, the optimal sizing of the component deeply depends on its systemic environment. The design of each component is strongly linked to the functioning of the global system. Therefore, the joint design of the component into its systemic environment allows to improve the efficiency of the system. In this methodological context, we optimize an electric machine for a hybrid vehicle. The aim of this work is to improve the global efficiency of the vehicle. In this work, we build a magnetic circuit model, and we propose two approaches for solving the optimization problem. The key points of this work are : the consideration of the environment of the electrical machine, the driving cycle and the energy management of the system
Santin, Jean-Jacques. "Conception mécanique d'un accouplement à roue-libre pour le moteur thermique d'un véhicule hybride parallèle thermique et électrique". Valenciennes, 2001. https://ged.uphf.fr/nuxeo/site/esupversions/5c97a50f-ddaa-4980-958f-ff84e3b9148e.
Texto completo da fonteThis thesis deals with the design of a free-wheel clutch. This unit is intended to replace the automated dry single-plate clutch of a parallel hybrid car with thermal and electric powertrain. Furthermore, the car is a single shaft zero emission vehicle fitted with a controlled gearbox. Chapter one focuses on the type of hybrid vehicle studied. It shows the need to isolate the engine from the rest of the drive train, depending on the driving conditions. Chapter two presents and compares the two alternatives : automated clutch and free-wheel. In order to develop the free-wheel option, the torsional vibrations in the automotive drive line had to be closely studied. It required the design of a specific modular tool, as presented in chapter three, with the help of MATLAB SIMULINK. Lastly, chapter four shows how this tool was used during the design stage and specifies the way to build it. The free-wheel is then to be fitted to a prototype hybrid vehicle, constructed by both the LAMIH and PSA
Paganelli, Gino. "Conception et commande d'une chaîne de traction pour véhicule hybride parallèle thermique et électrique". Valenciennes, 1999. https://ged.uphf.fr/nuxeo/site/esupversions/461ef0ed-8e58-41db-9aa9-17e74fa98c89.
Texto completo da fonteGinet, Patrick. "Conception et élaboration de microstructures en technologie hybride couche épaisse pour des applications MEMS". Phd thesis, Université Sciences et Technologies - Bordeaux I, 2007. http://tel.archives-ouvertes.fr/tel-00399523.
Texto completo da fonteDenoual, Jean Michel. "Combinaison de puissance : conception et réalisation d'une structure hybride 3D-planaire en bande K". Brest, 2007. http://www.theses.fr/2007BRES2034.
Texto completo da fonteThe satellite payload evolution will have a great impact on power amplifier efficiency, redundancy and flexibility. Solid state power amplifiers (SSPA) should be used to replace traveling wave tubes (TWT) but power combining techniques are necessary as SSPA output power levels are lower than TWT. The radial power combining technique is well suited for spatial applications. It consists in placing amplifiers around a radial waveguide to feed amplifiers with equi-magnitude and equi-phase signals. Transitions between various propagation structures (coaxial, rectangular, radial, planar) were optimized and tested and a new radial 16-way power divider-combiner including planar structures for SSPA mounting (MMIC) was designed. An original mechanism to balance MMIC phase dispersion was successfully implemented in the divider-combiner structure
El, kadri Khadija. "Contribution à la conception d'un générateur hybride d'énergie électrique pour véhicule : modélisation, simulation, dimensionnement". Besançon, 2006. http://www.theses.fr/2006BESA2036.
Texto completo da fonteThe work detailed in this thesis is part of a research project conducting at L2ES lab and supported an industry grant from DGA. The ECCE project aims at designing a mobile platform for assessing the different components of an electrical power train. The proposed study defines and evaluates a system using two main power sources which are integrated in a high performance heavy vehicle. The description and validation of hybrid generator were done using the simulations and benchmarks included in the platform featuring 120 kW. To understand and analyze how the system operates we developed a multi-blocks tool that models a vehicle with a focus on the two power sources. A model of the different components of the power train has been first defined. Then, several simulations have been used with the goal to highlight certain phenomena such as resonance as well as coupling related problems of energy sources. A special attention has been given to the storage system consisting of a battery. Part of the experiment we conducted was dedicated to the battery. Our goal was to master the protocol we used and to identify the different attributes of the underlying model. For the development of any electrical system and with the objective to conform to safety standards and procedures related to the high voltage used in the vehicle, we gave a special attention to electrical hazards. Some enhancements have been made related to the different procedures that regulate the usages of high voltage and that describe the consequences in terms of protection of the human personnel and equipments
Ceschia, Adriano. "Méthodologie de conception optimale de chaines de conversion d’énergie embarquées". Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST023.
Texto completo da fonteThe research work proposed in this thesis falls within the context of embedded systems electrification with the development of a new hybrid power conversion chain, with new energy sources and powertrains. These systems offer many degrees of freedom regarding both the devices parameters and the tuning values of the associated control laws. The relevant (technico-economic) optimization of these complex power chains relies on the ability of the best-set algorithm to combine simultaneously the main parameters and the technological constraints of each component, the uncertain environmental conditions faced during areal use and finally the control algorithms as well as the global energy management. Their performances are based on the capacity of the design approaches to consider the real environment multiphysic constraints, the adequacy of the technologies, the topologies and the control laws, allowing to integrate and to associate effectively their constituents. In this context, this research work aims at developing tools and methods allowing the optimization of the power architectures and their components (hybrid energy conversion) by integrating in the design process the control-command and the energy management aspects. They consider a use case based on hybrid Fuel cell / Battery power system.For this purpose, a new nested methodology for complex system is been suggested. It enables to tackle large search spaces and considers different performance indexes (energy saving, reliability and volume). It simultaneously tunes and designs the energy management and component sizing by optimizing the main powertrain parameters while respecting the specifications. Technically, it uses two nested loops, combining the particle swarm optimization (PSO) technique’s performance and the rapid optimal control algorithm. This strategy addresses vast search spaces, achieves faster convergence to the global optimal integer design solution, and provides a good accuracy and robustness. In order to consider the randomness feature of real driving cycle (stochastic characteristic), a real time energy management strategy (EMS) was introduced based on an extension of the design approach, which increases its availability. By using machine-learning technique, an estimation of the current driving mode is developed and permits to guide the online energy management system
Roy, Francis. "Optimisation énergétique de chaînes de traction électrifiées". Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066128/document.
Texto completo da fonteOn-going oil stock depletion and growing environmental concerns lead automakers to develop more efficient powertrains. Today, one of the most promising way forward consists in research on hybrid systems. The present work is focused on thermal/electric hybridization for HEV vehicle and presents an optimal methodology to identify key guidelines and design efficient systems. Defining the most promising efficient powertrain requires a systemic design which is based in this study on three main levers : powertrain architecture, energy management and electric components design. Different powertrains architectures are compared to the lowest fuel consumption that can be reached by each powertrain for a given driving cycle. Their optimal energetic performances are determined by using optimal control strategies and dynamic programming. The simulations results show that the most promising hybrid powertrain is the parallel one. At each step of time of the drivings cycles, the parallel hybrid powertrain behavior is more closely analyzed so as to provide technical specifications for an optimal sizing of the electric components. It points out the operating point and the driving cycles for which the electric machine has to be optimized. Two electric machines topologies derived from a starter-alternator architecture, are modeled by using reluctance network to provide losses map and compare CO2 saving of the vehicle. This approach has both identified areas for powertrain architecture improvement and components design optimization to achieve a better global efficiency of the system. It is shown that a starter-alternator could provide 33% of CO2 saving compared to a conventional car
Tian, Guangye. "Flot de conception système sur puce pour radio logicielle". Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00605989.
Texto completo da fonteKaloun, Adham. "Conception de chaînes de traction hybrides et électriques par optimisation sur cycles routiers". Thesis, Ecole centrale de Lille, 2020. http://www.theses.fr/2020ECLI0019.
Texto completo da fonteDesigning hybrid powertrains is a complex task, which calls for experts from various fields. In addition to this, finding the optimal solution requires a system overview. This can be, depending on the granularity of the models at the component level, highly time-consuming. This is even more true when the system’s performance is determined by its control, as it is the case of the hybrid powertrain. In fact, various possibilities can be selected to deliver the required torque to the wheels during the driving cycle. Hence, the main obstacle is to achieve optimality while keeping the methodology fast and robust. In this work, novel approaches to exploit the full potential of hybridization are proposed and compared. The first strategy is a bi-level approach consisting of two nested optimization blocks: an external design optimization process that calculates the best fuel consumption value at each iteration, found through control optimization using an improved version of dynamic programming. Two different systemic design strategies based on the iterative scheme are proposed as well. The first approach is based on model reduction while the second approach relies on precise cycle reduction techniques. The latter enables the use of high precision models without penalizing the calculation time. A co-optimization approach is implemented afterwards which adjusts both the design variables and parameters of a new efficient rule-based strategy. This allows for faster optimization as opposed to an all-at-once approach. Finally, a meta-model based technique is explored
Saïghi, Sylvain. "SYSTÈMES NEUROMORPHIQUES ANALOGIQUES : CONCEPTION ET USAGES". Habilitation à diriger des recherches, Université Sciences et Technologies - Bordeaux I, 2011. http://tel.archives-ouvertes.fr/tel-01017791.
Texto completo da fonteWu, Zhenwei. "Conception optimale d'un entraînement électrique pour la chaîne de traction d'un véhicule hybride électrique : Co-conception des machines électriques, des convertisseurs de puissance et du réducteur planétaire". Phd thesis, Université de Franche-Comté, 2012. http://tel.archives-ouvertes.fr/tel-00838732.
Texto completo da fonteMichard, Audrey. "Conception et caractérisation d’un transmetteur électro-optique dans une plateforme photonique sur silicium visant des communications très haut débit". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLC087/document.
Texto completo da fonteStimulated by a series of important breakthrough, silicon photonics has been experiencing a significant development for several years. Indeed, due to exponential growth of data traffic inside datacenters, an alternative solution to metallic interconnects has been proposed to address very high transmission rates while ensuring a low energy consumption and a reasonable cost. Promising applications are in the field of both long- and short-distance optical communications. Long-range interconnects between datacenter equipment currently target an aggregate throughput of 400 Gb/s while short-reach interconnects are involved in high performance computers between a processor and a memory bank.STMicroelectronics has been developing a silicon photonic platform on 300 mm wafers since 2012. The main objectives are: the design of passive and active optical components to achieve an elementary 20 Gb/s transceiver, the increased integration of electro-optic devices to form a photonic interposer, the ability to manage several wavelengths.In this context, this PhD report deals with a testchip development at wafer level, proposing the integration of anelectro-optic transmitter. This solution benefits from the three dimensions assembly architecture of the dies within the photonic interposer and can handle the heterogeneity of electrical and optical components.This work first proposes to study the optical modulator which is based on a ring resonator. The ring bandwidth is optimized to operate up to 50 Gb/s. Secondly, the 55nm CMOS electrical driver design is described and the trade-off between transmitter speed and power consumption is highlighted. Both devices are fabricated on distinct technological platforms, then characterized and analyzed with respect to their respective models. A first integration of the complete transmitter is assembled through wire-bonding method, which enables to validate the transmitter operation. Finally, the last part of the report is devoted to the preparation of a 3D demonstrator based on micro-copper pillars assembly. The demonstrator integrates a wavelength division multiplexed link with 16 channels, which is expected to achieve a total throughput of 320 Gb/s. In addition, the system study enables to ensure that the final interconnect will respect power consumption constraints