Tesis sobre el tema "Conception de cartes électroniques"
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Plot, Alexandre. "Approches numériques de conception CEM de cartes électroniques basées sur les techniques d'apprentissage". Electronic Thesis or Diss., Rennes, INSA, 2024. http://www.theses.fr/2024ISAR0001.
Texto completoThe constant evolution of electronic systems technologies presents a challenge in terms of electromagnetic compatibility (EMC) performance. The need to design equipment compliant with EMC standards from the first iteration requires considering EMC in the early stages of design. This thesis focuses on EMC design of electronic boards from the perspective of surrogate modeling. The use of such a technique, substituting for a costly-tocalculate physical model, poses a triple challenge involving the choice of an appropriate method, determining the number of learning data, and addressing limits in the context of dimension increase (number of design variables). The thesis proposes a comprehensive methodology addressing the training of a reliable metamodel and the challenge of EMC analysis of electronic boards. A systematic learning process, based on identifying significant variables and competing multiple metamodels in an iterative learning process, is established. The metamodel is then used as a parametric model of the printed circuit board, able to compute characteristic EMC observables. Conducting sensitivity and criticality analyses of printed circuit parameters helps establishing routing rules favoring a healthier EMC design of the board. Several scenarios are studied to validate the learning method and confirm the relevance of the established design rules
Hubau, Agathe. "Conception d'un procédé de biolixiviation pour la valorisation des métaux contenus dans les déchets de cartes électroniques". Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEC001.
Texto completoSpent Printed circuit boards (PCBs) are today raising attention because they contain almost 35% of metals including precious and strategic metals even at greater concentration than in primary resources (for instance, gold and copper are 25 to 250 times and 20 to 40 times more concentrated in spent PCBs than in ores, respectively). Consequently, spent PCBs are becoming a valuable resource, while the lack of an appropriate treatment could be a cause of environmental pollution. Today, high-grade PCBs are treated by pyrometallurgy to recover precious metals but many strategic metals are lost in the slag during this operation and the energy-cost of such processes is more and more disadvantageous. Therefore, the design of energy-efficient and cost-effective new processes capable to perform efficient metal recovery from PCBs is particularly important. Emerging techniques based on mechanical processes and hydrometallurgy appear as alternative solutions. In particular, biohydrometallurgy could be very promising. In the literature, few studies deal with the use of bioleaching for the treatment of spent PCBs by means of acidophilic microorganisms, which are mainly ferro and sulfo-oxidant. It allows the recovery of different metals such as Cu, Ni, Zn, etc. In the present study, a double-stage continuous bioreactor was designed to bioleach comminuted spent printed circuit boards (PCB) of low and medium grade. This work is performed at IRCP (Chimie ParisTech) and at the BRGM, in partnership with GeoRessources and is funded by the Chair ParisTech Urban Mines, supported by Eco-systemes
Kussener-Combier, Edith. "Conception de circuits intégrés de régulation intelligente pour les microprocesseurs sécurisés (carte à puce)". Lille 1, 2002. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2002/50376-2002-117.pdf.
Texto completoCe circuit additionnel permet en particulier de réaliser une conversion et une régulation de tension de gain unitaire. La phase de conception de ces convertisseurs nécessite une interprétation correcte des résultats de simulation. Dans ce sens, vue de l'alimentation, une macro modélisation de l'activité du microprocesseur est nécessaire. Une macro modélisation basée sur la simulation et la programmation de plusieurs inverseurs logiques est proposée. Les mesures effectuées sur plusieurs prototypes confirment bien l'interprétation théorique proposée ainsi que les résultats attendus à partir des simulations. Différentes solutions permettent de crypter les informations confidentielles qui circulent aux travers des plots d'alimentations des cartes à puces. Les solutions proposées consistent à ajouter des blocs sécuritaires élémentaires pouvant être pilotés par le microprocesseur via des algorithmes de cryptage
Leroux, Emmanuel. "Conception et validation d'une méthode numérique hybride appliquée à la prédiction du rayonnement d'une carte électronique connectée à son cablage". Lille 1, 1998. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1998/50376-1998-165.pdf.
Texto completoLahmani, Fatine. "Conception et optimisation de circuits électroniques communicants pour une intégration au format carte bancaire : application à une serrure de vélo à assistance électrique". Phd thesis, Université de Cergy Pontoise, 2014. http://tel.archives-ouvertes.fr/tel-01023711.
Texto completoGoral, Benoit. "Technique et Méthodologie de Conception du Réseau de Distribution d'Alimentation d'une Carte Electronique Rapide à Haute Densité d'Interconnexion". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLN037/document.
Texto completoToday's economical context leads electronics and high-tech corporations not only to innovate with a sustained rhythm but also to reduce the design cycle of new products. In order to remain competitive, these corporations must release regularly new products with new functionalities or enhancing performances of the last generation of this product. The enhancement from one generation of the product to the other can be quantified by the speed of execution of a task, the package size or form factor, the battery life and power consumption.The design methodology following these constraints is thus very tough. Indeed, integration of new functionalities as miniaturization of products imply a densification of the printed circuit board. The number of layer in the stack up is increased, isolation between nets is reduced, the use of integrated circuits embedding different functions as SOC or SIP implies a multiplication of the number of voltages. Moreover the increase of circuit performances implies a increasing data rate exchanged between component of the same printed circuit board and occasioning a widening of the reference clock and signal frequency spectrum. These design constraints are the root cause of the apparition of electromagnetic compatibility, signal integrity and power integrity issues. Failure risks must then be limited by fully understanding phenomenon occurring on the board by, on one side, realizing a precise dimensioning pre layout analysis aiming the elimination or reduction of the issues at the beginning of the design cycle, and on the other side, validating the layout by post layout simulation once the printed circuit board routed.This study proposed by Thales Communication and Security in collaboration with public research laboratory SATIE (System and Application of Energy and Information Technologies) of Ecole Normale Supérieure de Cachan within a industrial convention for development through research aims to develop a design methodology for power delivery network of digital printed circuit board with the goal of ensuring good behavior without or by reducing the number of prototypes.The first chapter of this manuscript include an introduction to the context of the study, a precise description of the studied system and the physical phenomenon ruling its behavior, and finally a state of the art of the power integrity technique analysis. A presentation of the test vehicle, designed during the work and support of all measurement results will constitute the focus of second chapter. This chapter presents and describes all the scenarios and implementations created for the observation and measurement of Power Integrity phenomenon and realise measurement-simulation results correlation. In a third part, modeling techniques of each element of the Power Delivery Network are described. The validity of the models is proven by correlating simulation results of each element with measurement results. The fourth chapter presents the analysis and design methodology developed from the results of the different modeling techniques presented in the previous chapter. Simulation tools and their configuration are precisely described and simulation results are compared with measurement results obtained on the test vehicle for the whole system. In the fifth chapter, the interest of power delivery network model will be extended to signal integrity analysis demonstrating how including this model allows to obtain simulation results closer from measurement results by running Signal Integrity Power aware simulation. Finally, the last part of this document synthetizes the work realized and presented in this document, takes a critical look on it and proposes future works and orientations to extend knowledges and understanding of Power Integrity Phenomenon
Cid, Pastor Angel. "Conception et réalisation de modules photovoltaïques électroniques". Phd thesis, INSA de Toulouse, 2006. http://tel.archives-ouvertes.fr/tel-00128644.
Texto completoAssif, Safa. "Fiabilité et optimisation des structures mécaniques à paramètres incertains : application aux cartes électroniques". Phd thesis, INSA de Rouen, 2013. http://tel.archives-ouvertes.fr/tel-00950354.
Texto completoRifi, Azzam. "Convection naturelle en enceintes fermées fortement partitionnées : application aux cartes électroniques en boitiers étanches". Poitiers, 1990. http://www.theses.fr/1990POIT2335.
Texto completoDemmel, Sébastien. "Construction de cartes étendues des difficultés de la route fondée sur la fusion de cartes locales". Versailles-St Quentin en Yvelines, 2012. http://www.theses.fr/2012VERS0051.
Texto completoThis thesis investigates the use and performance of augmented perception (Cooperative Systems) for assessment of raod risk. We provide a discussion on intervehicular communications (IVC) limitations and performance model built to incorporate them, created from empirical data collected on the tracks. Our results are more pessimistic than existing literature, suggesting IVC limitations have been underestimated. Then, we develop a CS/Augmented perception simulation architecture. This architecture is used to obtain news results on the safety benefits of a cooperative safety application. At the first, we confirm earlier results in terms of crashes numbers decrease, but raise doubts on benefits in etrms of crashes' severity. Then, augmented and single-vehicule perceptions are compared in a reference driving scenarion for risk assessment. Our results show that augmented perception performance, although this might be valid only for our specific scenario. Eventually, we propose a new approach using augmented perception to identify road risk through a surrogate: near-miss events
Chomette, Baptiste. "Contrôles modaux actif, semi-adaptatif et semi-actif de structures intelligentes embarquées : application aux cartes électroniques". Lyon, INSA, 2008. http://theses.insa-lyon.fr/publication/2008ISAL0100/these.pdf.
Texto completoOn-board structures such as electronic boards are submitted to severe stresses, particularly vibration. This extreme environment affects the structure’s expected lifetime. Some techniques can be used to increase their lifetime particularly in the case of complex structures. This dissertation presents firstly a method to reduce vibration using modal active control applied to on-board MBDA Printed Circuit Boards (PCB). This modal strategy permits to reduce on-board energy and to target the control energy only on the controlled modes using a minimum number of components. The control uses piezoelectric actuators and sensors. The method has been numerically and experimentally tested on the PCB with industrial boundary conditions and excitation levels. In the case of industrial mass production, dispersion leads to changes in mechanical and electromechanical properties. Moreover, boundary condition variations can induce mechanical properties variations. These variations can modify control performance and stability. This dissertation presents secondly a modal semi-adaptive control strategy, based on identification algorithms, aim at increasing control robustness. This strategy has been numerically and experimentally tested on the PCB for frequency and torque variations respectively. Finally, in the case of on-board structures, on-board energy used by the control must be minimal to reduce on-board mass. The last part of this dissertation presents a modal semi-active control strategy to eliminate operational energy. This method has been numerically tested on the most damaging mode of the PCB. This method could be used to increase PCB lifetime in future research
El, belghiti alaoui Nabil. "Stratégie de testabilité en production des cartes électroniques à forte densité d’intégration et à signaux rapides". Thesis, Toulouse, INSA, 2020. http://www.theses.fr/2020ISAT0018.
Texto completoUntil today, the production tests are based mainly on optical verification (AOI), X-ray inspection (AXI), electrical (ICT) and functional tests. Faced with the miniaturization of component packages, the high densification and integration of several technologies (digital, analog, radio frequency, power ...) on the same PCB (Printed Circuit Board), the test techniques listed above are no longer sufficient to fully meet the production test coverage requirements, because they are costly in terms of development time and test cycle and are not very efficient.The objective of this CIFRE thesis with ACTIA Automotive in collaboration with LAAS-CNRS is to define an innovative production test strategy adapted to high-density products. To do this, we have addressed in this work, improvements to existing test methodologies and proposed test approaches usable upstream of the production process of PCBAs (Printed Circuit Board Assemblies).First, we introduced a new contactless technique for testing PCBAs with limited physical test access. The technique involves the use of near-field magnetic sensors, which detect the magnetic signatures from components mounted on the PCB in order to test their presence and their value thereafter. Secondly, a test approach using infrared thermal signatures is presented. This technique can detect component assembly defects such as, presence, value and in some cases its state of health, which allows concluding on the PCBA state of defect. In order to evaluate the relevance of these two techniques, several fault scenarios were considered and analyzed with an outlier detection algorithm. In several cases, the manufacturing defects are discriminated with significant margins, while taking into account the variability in component specifications.Finally, a technique for regaining test accessibility on high frequency signal transmission tracks is presented. The technique uses small openings in the solder mask directly above the tracks carrying digital signals. The exposed conductors are contacted with a probe with deformable and anisotropic conductive tip. The industrial feasibility of this technique was tested on a prototype that we developed in collaboration with the ACTIA Group subsidiary: ACTIA Engineering Services
Lubaszewski, Marcelo Soares. "Le test unifié de cartes appliqué à la conception de systèmes fiables". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1994. http://hdl.handle.net/10183/26862.
Texto completoOn one hand, if the goal is to ensure that the design validation, the manufacturing and the maintenance testing, along with the concurrent error detection are efficiently performed in electronic systems, one is led to integrate the off-line and the on-line testing into circuits. Then, for complex systems to make profit of these two types of tests, such unification must be extended from the circuit to the board and module levels. On the other hand, although the unification of off-line and on-line testing techniques makes possible the design of systems suiting any safety application, the hardware added for increasing the application safety also decreases the system reliability, since the probability of occurrence of faults increases. Faced to these two antagonist aspects, this thesis aims at finding a compromise between the safety and the reliability of complex electronic systems. Thus, firstly we propose a solution to the off-line test and diagnosis problems found in the intermediate steps in the evolution towards boards which are 100% compliant with the IEEE standard 1149.1 for boundary scan testing. An approach for the BIST (Built-In Self-Test) of boundary scan circuits and interconnects then illustrates the ultimate step in the board off-line testing. Next, the UBIST (Unified BIST) scheme - merging BIST and self-checking capabilities for circuit on-line testing, is combined with the IEEE standard 1149.1, in order to obtain a design strategy for unifying the tests of interconnects and circuits populating boards and modules. Finally, we propose a fault-tolerant scheme based on the duplication of these kind of modules which ensures the competitivity of the resulting system in terms of reliability at the same time as preserving the inherent module safety.
Lubaszewski, Marcelo. "Le test unifié de cartes appliqué à la conception de systèmes fiables". Grenoble INPG, 1994. http://www.theses.fr/1994INPG0055.
Texto completoOn one hand, if the goal is to ensure that the design validation, the manufacturing and the maintenance testing, along with the concurrent error detection are efficiently performed in electronic systems, one is led to integrate the off-line and the on-line testing into circuits. Then, for complex systems to make profit of these two types of tests, such unification must be extended from the circuit to the board and module levels. On the other hand, although the unification of off-line and on-line testing techniques makes possible the design of systems suiting any safety application, the hardware added for increasing the application safety also decreases the system availability and reliability, since the probability of occurrence of faults increases. Faced to these two antagonist aspects, this thesis aims at finding a compromise between the safety and the reliability of complex electronic systems. Thus, firstly we propose a solution to the off-line test and diagnosis problems found in the intermediate steps in the evolution towards boards which are 100% compliant with the IEEE standard for boundary scan testing. An approach for the BIST (Built-In Self-Test) of boundary scan circuits and interconnects then illustrates the ultimate step in the board off-line testing. Next, the UBIST (Unified BIST) scheme - merging BIST and self-checking capabilities for circuit on-line testing, is combined with the IEEE standard for boundary scan testing, in order to obtain a design strategy for unifying the tests of interconnects and circuits populating boards and modules. Finally, we propose a fault-tolerant scheme based on the duplication of these kind of modules which ensures the competitivity of the resulting system in terms of reliability at the same time as preserving the inherent module safety
Collin, Olivier. "Conception de circuits électroniques par des réseaux de neurones : application au convertisseur analogique numérique". Rennes 1, 1991. http://www.theses.fr/1991REN10117.
Texto completoPerbost, Marc. "Analyse de testabilité et ressources JTAG : problèmes d'initialisation, de contrôlabilité et d'observabilité dans les composés électroniques logiques MCM et cartes". Montpellier 2, 1997. http://www.theses.fr/1997MON20157.
Texto completoCrampon, Marie-Agathe. "Conception et réalisation d'électrodes neuronales dédiées à des stimulateurs électroniques implantables". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/MQ42902.pdf.
Texto completoBounouar, Mohamed Amine. "Transistors mono-électroniques double-grille : modélisation, conception & évaluation d'architectures logiques". Thèse, Université de Sherbrooke, 2013. http://hdl.handle.net/11143/6117.
Texto completoBérubé, Benoit-Louis. "Développement d'une technologie NMOS pour la conception de fonctions électroniques avancées". Mémoire, Université de Sherbrooke, 2010. http://savoirs.usherbrooke.ca/handle/11143/1567.
Texto completoAl-Mohammed, Mohammed. "Conception des systèmes électroniques : les étapes d'optimisation et d'allocation des tolérances". Toulouse, INPT, 2003. http://www.theses.fr/2003INPT057H.
Texto completoFeuillet, Vincent. "Développementd'outils d'analyse thermique pour la conception de composants électroniques de puissance". Nantes, 2006. http://www.theses.fr/2006NANT2072.
Texto completoThis work deals with the development of several tools for the thermal design of power electronic components. This kind of tools are essential to face the heat dissipation problems in the current components. The systems under consideration are heterogeneous stacked structures of elements of various size with a high number of heat sources. An original calculation method has been developed to determine the temperature distribution in heterogeneous components. The Discrete Boundary Resistance (DBR) method constitutes an alternative to Finite-Element methods. It has been validated by comparing the results with those given by a Finite-Element code. It has been used for the thermal analysis of a Radio-Frequency component. An estimation method of thermal resistance distributions has also been developed. This method aims at detecting defects and heterogeneities at the interface of two elements. It consists in analysing the temperature distribution at the top of the structure with infrared thermography. The conjugate gradient algorithm has been used to estimate different types of thermal resistance distributions. The algorithm has been improved for the estimation of a parameter distribution. Moreover, this work lead to the set up of an experimental apparatus for the thermal characterisation of defects and heterogeneities. The photolithography and chemical etching processes have been applied to form heater elements for the thermal stimulation of the structure. Finally the experimental set-up has been used to characterize air gaps in adhesive bonds
Saint-Martin, Olivier. "Etude et réalisation de systèmes intégrés en imagerie numérique : application à l'inspection visuelle automatique de cartes électroniques équipées". Toulouse 3, 1990. http://www.theses.fr/1990TOU30002.
Texto completoPremont, Christophe. "Etude et conception d'un composant analogique programmable en technologie CMOS standard". Lyon, INSA, 1998. http://www.theses.fr/1998ISAL0028.
Texto completoThis thesis is concerned with the study and the design of a field-programmable analogue array with a CMOS standard process. This circuit is an analogue cells based array. Each cell is programmable and can achieve various analogue functions with specific performance. Beside, the interconnections between the cells have to be programmable. The array configuration is achieved using a digital or an analogue interface circuitry to implement a particular function. For a flexible programmability and high-electrical performance, a new approach based and a transresistor amplifier using current conveyors have been developed to control full-differential transconductances. This report falls into six chapters. The first one deals with the concept of field programmable analogue array. The second chapter presents a methodology for describing analogue circuits. The array architecture is studied according to the requirements for such a programmable circuit. The main feature of the third chapter is to introduce the current-mode approach with the current conveyor. The fourth chapter presents the programmable analogue cell designed during the project. The structure of the analogue array and the proposed solutions are thoroughly described in the fifth chapter. The last chapter presents some application examples and it focuses on future works
Chastang, Cyril. "Techniques et méthodologies de validation par la simulation des liens multi-gigahertz des cartes électroniques haute densité". Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2013. http://tel.archives-ouvertes.fr/tel-00846476.
Texto completoKadionik, Patrice. "Contribution aux logiciels d'essais des cartes électroniques VXI du multidétecteur Eurogam dans un environnement réparti Unix/VxWorks". Bordeaux 1, 1992. http://www.theses.fr/1992BOR10654.
Texto completoTelandro, Vincent. "Conception d'un système d'alimentation intégré dédié à la sécurisation des cartes à puce". Phd thesis, Université de Provence - Aix-Marseille I, 2007. http://tel.archives-ouvertes.fr/tel-00268363.
Texto completoTelandro, Vincent. "Conception d'un système d'alimentation intégré dédié à la sécurisation des cartes à puce /". Paris : Éd. Edilivre, 2008. http://catalogue.bnf.fr/ark:/12148/cb41273743b.
Texto completoGeynet, Lionel. "Conception de circuits de synthèse de fréquence fractionnaire multi-standards sur technologie SOI". Nice, 2006. http://www.theses.fr/2006NICE4089.
Texto completoThe purpose of this study is to demonstrate the interest of the 130nm SOI technology for multi-standard synthesizer used for wireless applications. The most commonly standards found in telecommunication have to be covered by this architecture with only one VCO, GSM, GPS, DCS, Bluetooth, WLAN. The VCO is the critical building block in the frequency synthesizer. Its performance, in terms of phase noise, tuning range or supply voltage rejection are very important in order to realise a good phase locked loop (PLL). A “bottom-up” methodology was used to investigate this subject. Our approach was to design two VCOs, one at 5. 2GHz and another one at 3. 6GHz, to characterize phase noise performance and the influence of body bias. Different switched LC tanks have been realised in the purpose of being integrated in multi-band VCOs. The fabrication of VCO has a real interest only if it’s introduced in a PLL. The second part of this work was therefore to create a model of these VCOs and realise a complete behavioural modelling of a multi-standard PLL using Matlab and VHDL_AMS. The fractional-N PLL which has lots of advantages for these applications, was the chosen architecture. This circuit has been implemented in order to validate the functionality and the great interest of SOI technology for multi-standard wireless applications
Tounsi, Patrick. "Méthodologie de la conception thermique des circuits électroniques hybrides et problèmes connexes". Toulouse, INSA, 1992. http://www.theses.fr/1992ISAT0039.
Texto completoSiarry, Patrick. "La méthode du recuit simulé : application à la conception de circuits électroniques". Paris 6, 1986. http://www.theses.fr/1986PA066433.
Texto completoGuerin, Mathieu. "Conception de circuits électroniques au moyen de la technologie CMOS organique imprimée". Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4780/document.
Texto completoDuring the past few years, the field of organic electronics has known an important development. The CEA LITEN is able to manufacture N-type and P-type screen-printed transistors on a same plastic sheet, enabling the design of complementary circuits. The performances and limitations of this technology are studied since one of this thesis’ main objectives is to determine the feasibility of a fully-printed organic RFID tag. Such a tag would be flexible and could be manufactured at an extremely low-cost. Some circuits commonly used in the RFID tags, and using up to 50 transistors, are designed and tested, showing some performances equivalent or above the reported latest developments. The organic electronics manufacturing process is not as mature as the one used in the classical silicon industry. Therefore, a study is performed concerning the effects of this process scattering, as well as the ageing, on the circuits’ performances. The main improvements (in terms of reliability, organic semi-conductor mobility, size) that can help the organic electronics in order to compete, one day, with the silicon industry, are discussed
Lacrampe, N. "Méthodologie de modélisation et de caractérisation de l'immunité des cartes électroniques vis-à-vis des décharges électrostatiques (ESD)". Phd thesis, INSA de Toulouse, 2008. http://tel.archives-ouvertes.fr/tel-00283105.
Texto completoLacrampe, Nicolas. "Méthodologie de modélisation et de caractérisation de l’immunité des cartes électroniques vis-à-vis des décharges électrostatiques (ESD)". Toulouse, INSA, 2008. http://eprint.insa-toulouse.fr/archive/00000221/.
Texto completoThanks to the continuous increase of the integrated circuits performance, electronics has greatly expanded in most sectors and particularly in embedded systems. These systems must meet the strong reliability constraints to withstand stresses from transient events as varied as electrostatic discharge (ESD). At present, the impact of these stresses on the return customers rate of integrated circuits is 40 to 50%. To improve the immunity system, and thus reduce production costs and tracking system, it becomes necessary to take into account these disturbances as soon as the conception and to have a comprehensive protection approach. Within these works of thesis, we have developed a simulation methodology, models and characterization techniques associated in order to estimate the impact of an ESD stress at all points of an electronic board depending on the characteristics of each component and placement / routing. The approach of modeling chosen is based on the functional circuit tools design of circuits and boards, and uses VHDL-AMS which the IEEE certification makes it an industry standard. For the characterization, the originality concerns the using of a pulsing test bench like Very Fast-TLP, coupled with various injection methods, which allows both the parameters extraction for the models and to observe the IC stressed response on the board. The major result of this study is the ability to simulate the electronic board response to an ESD stress (eg IEC ESD stress) since its impact to any input / output components pins of the board. The approach is validated through a simple circuit test, but also on a more complex application based on a microcontroller. It enables to ensure that each component is adequate in terms of robustness and to detect unwanted couplings
Guédon-Gracia, Alexandrine. "Contribution à la conception thermo-mécanique optimisée d'assemblages sans plomb". Bordeaux 1, 2005. http://www.theses.fr/2005BOR12971.
Texto completoBaudry, David. "Conception, validation et exploitation d'un dispositif de champs électromagnétiques proches. Application CEM". Rouen, 2005. http://www.theses.fr/2005ROUES016.
Texto completoThe work presented in this thesis involves the design, the development and the validation of a near field measurement bench that is used as a tool for diagnosis and investigation in the problems of electromagnetic compatibility (ECM). This measurement bench is based on a direct measurement method using electronic probes : a coaxial probe, a dipole and a wire loop. While being based on electromagnetic simulations, the developed measurement bench as well as the used probes are studied and validated on cases tests made up of planar passive circuits. Various applications of the measurement bench are presented : study of microwaves functions and measurement of S circuit internal parameters, insulation of the electromagnetic radiation sources, study of the coupling phenomena, characterization of cables shielding, measurement of the components led emissions, measurement and modelling of the components radiated emissions
Kamenova, Lora. "Modélisation thermo-hydraulique de caloducs miniatures plats à faible épaisseur pour des applications électroniques". Grenoble INPG, 2007. http://www.theses.fr/2007INPG0186.
Texto completoA miniature heat pipe is a passive heat transfer mechanism that can transport large quantities of heat with a very small difference in temperature between the hottest and coldest interfaces in electronics. The objective of this thesis is to study the performances of flat heat pipes with sintered powder capillary wick, employed as thermal functions in high density electronics. Thanks to the coupling of our thermal and hydraulic models, we were able to predict the heat pipe performances in terms of maximum heat power and temperature distribution. The experiments demonstrated that the heat pipes are able to decrease the electronics temperature with several tens of °C. The tests results were in very good conformity to our models, with an average gap of 20% only. The innovative technology DBC for fabricating thin copper heat pipes was also developed in his work
Trane, Patrick. "Conception et réalisation d'un système de contrôle d'accès pour la carte à micro-processeur". Lille 1, 1995. http://www.theses.fr/1995LIL10082.
Texto completoPélissier, Gilles. "Méthodologies de conception conjointe logicielle/matérielle". Montpellier 2, 2002. http://www.theses.fr/2002MON20055.
Texto completoEmam, Hamed. "Modélisation dynamique et conception des systèmes électroniques de commande de fauteuil roulant électronique". Versailles-St Quentin en Yvelines, 2010. http://www.theses.fr/2010VERS0001.
Texto completoAlthough the great modification that the authors had made on their electric power wheelchair, their prototypes suffer from two predominant deficiencies, one concerning dynamic modeling and the other is concerning the navigation assistance. The main goals of this thesis are to focus on these problems. In this thesis a dynamic model for power wheelchairs including longitudinal and lateral slip effect that takes place while driving under non-normal conditions is presented. The system model developed consists of three main parts: body model, wheel model, and tire model. All these parts will be derived separately and will be in integrated into one global model. The effectiveness of the proposed method is verified by the simulation and the practical experiments. Also, the driver behaviour model is presented. The proposed behaviour model is based on the generalized force. In the proposed model, we assume that the driver when drives wheelchair to a certain target in this trajectory is subjected many forces, the summation of these forces act upon a driver cause it to accelerate or decelerate and change this direction continually while moving. The simulation results show that the proposed model shows realistic behaviour for the investigated scenarios
Nguyen, Minh Huu. "Sécurisation de processeurs vis-à-vis des attaques par faute et par analyse de la consommation". Paris 6, 2011. http://www.theses.fr/2011PA066671.
Texto completoLacroix, Benjamin. "Conception de capacités commutées MEMS RF miniatures et application à la reconfiguration rapide de déphaseurs". Limoges, 2008. http://aurore.unilim.fr/theses/nxfile/default/b678119d-e358-4869-ad08-cbb4b8a3c75a/blobholder:0/2008LIMO4020.pdf.
Texto completoThis work presents design of fast miniature RF MEMS switched capacitors and their application to Distributed MEMS Transmission Line phase shifters. The goal is to increase the switching speed since it is currently rarely under the microsecond. Thus, an original geometry has been studied and geometrical dimensions of the micromechanical beam have been optimized. Mechanical and RF measurements have also been done to validate theoretical results and to characterize the fabricated components. These miniature RF MEMS switched capacitors have been implemented on distributed lines to achieve fast phase shifting operations based on micromechanical systems. Switching time, return loss and insertion loss measurements are also presented
Rouault, Gwenaël. "Conception d'un composant de puissance à grille isolée I. G. B. T. : Etude statique et dynamique". Ecully, Ecole centrale de Lyon, 1988. http://www.theses.fr/1988ECDLA019.
Texto completoEl, Bouchtioui Lamia. "Le cadre réglementaire des déchets d'équipements électriques et électroniques : de la conception à la fin de vie des équipements électriques et électroniques". Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0491.
Texto completoWaste electrical and electronic equipment (W.E.E.E.) is a challenge for society as a whole, as their management has quickly become an issue that is at once economic, political, social, environmental and health. Thus, they represent a burden that developed countries seek to get rid of at a lower cost. International traffic has emerged around their export to developing or emerging countries mainly marked by legal weaknesses in environmental matters. Several international and regional texts limit the transboundary movement of waste in order to prevent economically efficient methods of sending hazardous waste. Within the European Union, a specific regulation aims to frame the theme of W.E.E.E. It advocates sustainable management of W.E.E.E. to protect and improve the quality of the environment. It aims to contribute to sustainable production and consumption, as a priority, through the prevention of W.E.E.E. and, in addition, through the reuse and recycling of materials in order to reduce the amount of waste to be disposed of. Recent changes in European law highlight the desire for a transition to a circular economy. Nevertheless, there are still some difficulties in achieving the objectives set. This work aims to address the way in which the law in force today incorporates a global approach to the subject taking into account the entire life cycle of the W.E.E.E. reconciling environmental and economic objectives. This study highlights the advances but also the persistent difficulties that society must confront
Ouchelouche, Larbi. "Conception et réalisation d'un adaptateur électronique microonde programmable pour mesures de bruit sous pointes". Limoges, 1993. http://www.theses.fr/1993LIMO0187.
Texto completoPoublan-Attas, Valérie. "L'espace urbain déformé : transports collectifs et cartes mentales". Phd thesis, Ecole Nationale des Ponts et Chaussées, 1998. http://tel.archives-ouvertes.fr/tel-00180195.
Texto completoCette thèse développe une méthode qualitative d'aide à la conception et à l'évaluation des réseaux de transports collectifs et s'intéresse, plus spécifiquement aux lignes de tramway. La méthode constitue aussi un outil puissant de pondération des outils quantitatifs.
Toute personne possède une représentation mentale de l'espace urbain qu'elle parcourt réellement ou virtuellement. Les réseaux de transport collectif influencent les cartes mentales de l'espace urbain. Ils contraignent la perception que les gens ont de la ville à travers leurs itinéraires mais aussi modifient les distances entre les points, créant un espace temps spécifique. Cependant, les cartes mentales, tels des instruments de navigation, agissent par activations sélectives ou abandon de certaines branches du réseau. C'est pourquoi l'étude des représentations mentales, de leur capacité à intégrer des éléments nouveaux comme une nouvelle ligne de transport public est capitale.
Cette recherche étudie les éléments constitutifs des cartes mentales puis la manière dont celles-ci évoluent avec la mise en service d'une nouvelle ligne de transport collectif. Elle s'intéresse aussi à la taille, à la localisation des territoires d'appartenance des individus et à leurs évolutions, question essentielle pour désenclaver les quartiers en difficulté.
Les enseignements cernent les éléments du transport collectif qui déterminent fortement les représentations mentales. La topologie de celles-ci, les seuils de perception sont analysés en particulier et partiellement expliqués. Enfin, les cartes mentales peuvent se regrouper par types selon leur capacité à intégrer des éléments nouveaux. Chaque type correspond à un profil d'individu. Cette conclusion est capitale car elle permet, par l'utilisation de la méthode, d'évaluer dans quelle mesure les représentations mentales des individus, concernés par un projet de transport collectif, sont enclines à intégrer la future ligne ou non.
Les résultats de cette recherche, ainsi que la méthode développée, sont autant d'enseignements précieux pour un aménageur ou, de manière générale, un décideur en matière d'urbanisme et de transport.
Hély, David. "Conception en vue du test de circuits sécurisés". Montpellier 2, 2005. http://www.theses.fr/2005MON20123.
Texto completoMaréchal, Catherine. "Etude de l'influence de la technologie et de l'association de composants logiques sur la sensibilité électromagnétique de cartes électroniques : Application à l'étude d'une fonction dont la sécurité est fondée sur la redondance matérielle". Lille 1, 1994. http://www.theses.fr/1994LIL10109.
Texto completoPeyrol, Eric. "Gestion d'un atelier de fabrication de composants électroniques". Toulouse, INPT, 1992. http://www.theses.fr/1992INPT001G.
Texto completoBarets, Anne-Claire. "Informatisation et télétransmission des feuilles de soins électroniques en médecine générale". Bordeaux 2, 1999. http://www.theses.fr/1999BOR2M083.
Texto completoMourad, Oumar. "Méthode de conception et d'optimisation d'éléments rayonnants de cartes à puce pour applications en RFID HF". Thesis, Nice, 2014. http://www.theses.fr/2014NICE4086.
Texto completoThe HF frequency band is internationally allocated for worldwide and fastest growing band used in RFID (Radio Frequency IDentification) applications. The need for automation and advanced technologies in applications like tracking, packaging, transportation, and sensing has attracted the interest of the near-field contactless RFID at 13.56 MHz based on ISO/IEC 14443 communication standard. For low-cost RFID HF systems, communication interfaces use inductive loop antennas made up of the winding of conductive wires or strips. In this thesis, we are particularly interested in the antenna design and optimization of tags dedicated for transport to provide a maximum power to the integrated circuit. The influence of the geometric parameters and materials used for the realization of the radiating element has been particularly studied to reach to propose a methodology of inductive antennas design. To do this, a circuit model of HF RFID system has been proposed to analyze the reader / tag coupling and the different critical operating points. Several antenna prototypes were made with different materials to validate the different studies