Дисертації з теми "Circuits électroniques – Fiabilité – Simulation par ordinateur"
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Alexandrescu, Marian-Dan. "Outils pour la simulation des fautes transitoires." Grenoble INPG, 2007. http://www.theses.fr/2007INPG0084.
Повний текст джерелаSingle Events (SE) are produced by the interaction of charged particles with the transistors of a microelectronic circuit. These perturbations may alter the functioning of the circuit and cause logic faults and errors. As the sensitivity of circuits increases for each technological evolution, specific tools are needed for the design of hardened circuits. This thesis aims at furthering the comprehension of the phenomena and proposes EDA tools to help the analysis of these problems in today's ICs. We have developed methodologies for the characterization of the cells from the standard library and tools for accelerated fault simulation and probabilistic analysis of single events. The results provided by these tools allow the designer to correctly evaluate the sensitivity of his design and select the most adequate methods to improve the reliability of ICs
Belhenini, Soufyane. "Etude de structures de composants micro-électroniques innovants (3D) : caractérisation, modélisation et fiabilité des démonstrateurs 3D sous sollicitations mécaniques et thermomécaniques." Thesis, Tours, 2013. http://www.theses.fr/2013TOUR4029/document.
Повний текст джерелаThis work establishes a contribution in an important European project mentioned 3DICE (3D Integration of Chips using Embedding technologies). The mechanical and thermomechanical reliability of 3D microelectronic components are studied by employing standardized tests and numerical modeling. The board level drop test and thermal cycling reliability tests are selected for this study. Failures analysis has been used to complete the experimental study. The mechanical properties of elements constituting the microelectronic components were characterized using DMA, tensile test and nanoindentation. Bibliographical researches have been done in order to complete the materials properties data. Numerical simulations using submodeling technique were carried out using a transient dynamic model to simulate the drop test and a thermomechanical model for the thermal cycling test. Numerical results were employing in the design optimization of 3D components and the life prediction using a fatigue model
Ayoub, Kamel. "Représentation analytique des briques de base, miroirs et différentiels en technologie duale unipolaire et bipolaire." Toulouse, INPT, 2000. http://www.theses.fr/2000INPT033H.
Повний текст джерелаPerez, Renaud. "Contribution à la définition des spécifications d'un outil d'aide à la conception automatique de systèmes électroniques intégrés robustes." Montpellier 2, 2004. http://www.theses.fr/2004MON20215.
Повний текст джерелаRaiff, Bertrand. "Définition et conception d'un simulateur de circuits analogiques non linéaires à modèles par zones et ordres variables." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT076H.
Повний текст джерелаGarci, Maroua. "Simulation multi-physiques de circuits intégrés pour la fiabilité." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAD020/document.
Повний текст джерелаThis thesis was carried out under the theme of the microelectronics Integrated Circuits Reliability. The aim of our work was to develop a multi-physics simulation tool for the design of reliable integrated circuits. This tool has the following innovative features : • (i) The integration in a standard microelectronics design environment, such as the Cadence® environment ;• (ii) The possibility of efficient simulation, over long periods, of analog CMOS circuits taking into account the aging henomenon ; • (iii) The simulation of multiple physical behaviours of ICs (electrical-thermalmechanical) coupled in the same environment using the direct simulation method. This work was carried out through three main stages detailed in the three parts of this Manuscript
Egot, Stéphane. "Intégration des équipements électroniques dans la modélisation de l'architecture électrique des véhicules automobiles : application à la prédiction de compatibilité électromagnétique dans les phases amont de la conception." Lille 1, 2005. http://www.theses.fr/2005LIL10151.
Повний текст джерелаThis thesis deals with the elaboration and the evaluation of an integration methodology of electronic equipment in the EMC modeling of the electrical architecture in the early design phase of a vehicle. The proposed approach is based on dissociating the equipment modeling into two complementary parts involving the car manufacturer and the elctronic supplier. The feasibility of this modeling technique primarily required ton characterize the interaction between the equipment and the car body. Besides, the different factors having an influence on the validity of the model were examined as well as its needed level of precision. The latter issue was considered by taking into account the globality of the system, especially the variability brought by the random bundling of the cable harness. Finally the proposed method was evaluated by comparing statistical measurement and simulation results obtained on a realistic electronic sub-system
Karray, Mohamed. "Contribution à la modélisation hiérarchique de systèmes opto-électroniques à base de VHD-AMS." Paris, ENST, 2004. http://www.theses.fr/2004ENST0044.
Повний текст джерелаIn a technological context in which the integration degree in micro and optoelectronic circuits increases more and more, it becomes necessary for the designers to get complete simulation tools, in order to study not only the behavior of different constitutive elements of sub-systems that they design, but also to evaluate global performances of the system. This thesis work concerns the design of opto-electronic component models, by using VHDL-AMS language. This language is very convenient for multi-domain modelling : electronics, optics, thermics or mechanics. It gives also the capability to get models at different abstraction levels in the system. Our work is a part of SHAMAN project. Its objective is to model every component of an opto-electronic system with the conditions of high speed, short distance, and strong thermal and mechanical interactions. The methodology used is hierarchical, combining top-down and bottom-up design flow in order to get optimal solutions about performances, cost and design time, and by re-using virtual components following intellectual property rules (IP)
Zhu, Feiyi. "Etude de la fiabilité des composants soumis à des stress électriques conduits." Rouen, 2015. http://www.theses.fr/2015ROUES065.
Повний текст джерелаAccurate method of reliability qualification is required to meet the needs of the electronic embedded components and systems. It was found that the undesirable effects as OVS (Over-current and overvoltage) part of EOS (Electrical Overstress) remains unknown for electronics engineers. So far, these effects are not yet classified in the reliability test standards of electronic components. As a corollary, relevant test method and model need to be developed in order to improve the electronic components reliability against these types of aggression. The main objective of the present PhD thesis which was conducted in IRSEEM and involved in the SESAMES project (Study for Electrical overstress Standardization And Measuring Equipment Set-up) is to improve the knowledge of component models subjected to conducted electrical stress whose characteristics is classified in the “Electrical Overstress” (EOS) family. To understand the mechanism of electronic components degradation during and after pulsed EOS, a test bench was developed. The EOS test platform operation was described including the implementation of the pulsed EOS signals generation approach based on the Matlab and LabVIEW programming. For different EOS waveforms, after description of the experimental test set-up, the EOS test results were presented and discussed. To meet the needs of SESAME project industrial partners, two different electronic components were tested and studied. It acts as a Zener diode and the TDA8007 CMOS integrated circuits. Hypotheses have been formulated on the reasons for the degradation suffered by these components during EOS stress. Based on the failure analyses on the components subjected to EOS generated by the developed test bench under SEM (Scanning Electron Microscopy) and FIB (Focused Ion Beam), results have been presented and interpreted to understand the mechanism of degradation. This failure analysis enables to locate and understand the failure sources and the reliability state of the tested components. To predict the components reliability during and after EOS, it is important to use an electrical model that can be integrated into electrical simulation tools. A methodology enabling the identification of a diode electrical model during and after EOS is established. Based on this methodology, a thermo-electrical model was described in VHDL-AMS (VHSIC Hardware Description Language - Analog and Mixed Systems). Simulation results comparing with experimental results were presented. The model was validated experimentally and by SPICE (Simulation Program with Integrated Circuit Emphasis) simulations. The developed model can be used in the future for the prediction of EOS effects
Marcon, Didier. "Étude de faisabilité d'un processeur matériel spécialisé pour la simulation concurrente de fautes." Montpellier 2, 1986. http://www.theses.fr/1986MON20174.
Повний текст джерелаBareille, Michel. "Contribution à l'analyse des problèmes de compatibilité électromagnétique dans les circuits de l'électronique de puissance : la cellule de commutation IGBT + diode et son environnement." Toulouse, INSA, 2001. http://www.theses.fr/2001ISAT0027.
Повний текст джерелаThe implementation of new european regulations in 1996 highlighted the importance of electromagnetic parasitic effects in electrical networks. Today, these phenomena have to be taken into account when designing a new circuit. In the field of Power Electronics, this obligation involves the development of models capable of describing the waveforms even during the transient phase of the switching process. The work presented in this thesis concerns the implementation in the SABER package of new distributed models of semiconductor components (I. G. B. T. And diode) with the aim of simulating electromagnetic interferences in power circuits. These models, initially developped at the L. A. A. S. By the team of Pr. LETURCQ, were first validated on well known configurations (chopper cell, gate charge) both in normal and extreme situations (short-circuited I. G. B. T. ). Two examples of applications of these models concerning Electro-Magnetic Compatibility (E. M. C. ) were also investigated : 1)influence of the recovery of the diode on the spectrum of the current in a chopper cell. 2)simulation of the Continuous Derivatives Driving Method for the symmetrically driven light dimmer. The results achieved are similar to those encountered in various published works and validate the use of these models for E. M. C. Purposes. The I. G. B. T. And the diode were then coupled to equivalent models of passive components, digital circuits and interconnections in order to simulate a chopper cell with an inductive load. The waveforms obtained could account of the real functionning of the circuit during the normal conduction of the semiconductors and during their switching. This approach should lead to a genuine Virtual Test Bed on SABER allowing the prediction of the electromagnetic interferences emitted or received by a power circuit
Fremont, Hélène. "Test de circuit intégrés par faisceau d'électrons : étude de la mesure de potentiel à travers les couches isolantes." Bordeaux 1, 1988. http://www.theses.fr/1988BOR10579.
Повний текст джерелаPinède, Pascale. "Conception, réalisation et validation du simulateur concurrent de fautes LOFSCATE." Montpellier 2, 1988. http://www.theses.fr/1988MON20132.
Повний текст джерелаAllali, Lahcen. "Conception et réalisation du préprocesseur du simulateur concurrent de fautes LOFSCATE." Montpellier 2, 1987. http://www.theses.fr/1987MON20111.
Повний текст джерелаOrdas, Thomas. "Analyse des émissions électromagnétiques des circuits intégrés." Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20001.
Повний текст джерелаIn the area of secure integrated circuits, such as smart cards, circuit designers are always looking to innovate to find new countermeasures against attacks by the various side channels that exist today. Indeed, side channels attacks such as the analysis of electromagnetic emissions permit to extract secret information contained in circuits. Based on this observation, in this thesis, we focused on the study of electromagnetic analysis to observe the analysis possibilities. This manuscript is organized as follows. Initially, we presented a measurement system for electromagnetic emissions in time domain, and the results obtained on different circuits. From these results, a summary of opportunities, relating to the security threat, posed by electromagnetic analysis, is proposed as well as solutions proposals to reduce electromagnetic radiations of integrated circuits. In a second step, we are interested in the simulation of electromagnetic emissions. A state of the art of simulation tools which exist today, has allowed us to demonstrate that none of them allowed to have a fine enough resolution in terms of electromagnetic emissions. To fill this gap, a simulation tool has been developed and to validate this flow, a comparison between measurement results and simulation results was performed
Naceur, Djamila. "Etude par simulation de l'anti-éblouissement horizontal et vertical dans les dispositifs à transfert de charge à trame." Montpellier 2, 1990. http://www.theses.fr/1990MON20083.
Повний текст джерелаMay, Jean-Philippe, and Fy Rakotoarivelo. "Étude des concepts de réalisation et de fonctionnement d'un simulateur de circuit analogique ouvert et structuré." Toulouse, INPT, 1991. http://www.theses.fr/1991INPT047H.
Повний текст джерелаBertrand, Géraldine. "Conception et modélisation électrique de structures de protection contre les décharges électrostatiques en technologies BICMOS et CMOS analogique." Toulouse, INSA, 2001. http://www.theses.fr/2001ISAT0037.
Повний текст джерелаThe sensitivity of modern integrated circuits to ElectroStatic Discharges (ESD) increases with the technology shrink and the introduction of new process techniques. To move towards a "first pass success", ESD must be taken into account at an early stage of a project development which requires capability to predict efficiency of ESD protection strategies. The availability of an ESD protection library including both optimized layouts and electrical models is part of the solution. However, ESD protection structures operate in avalanche breakdown and high current regimes, which cannot be simulated with standard SPICE models. In this thesis, a methodology to extend classical models to these regimes is first developed for the vertical bipolar NPN transistor widely used in BiCMOS technologies. This methodology is then applied to the NMOS transistor in an analog CMOS process, with the modeling of its parasitic lateral NPN transistor. Physics-based compact models are provided thanks to 2D device simulation, TLP characterization and photoemission experiments (EMMI)
Ferrere, Thomas. "Assertions and measurements for mixed-signal simulation." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAM050.
Повний текст джерелаThis thesis is concerned with the monitoring of mixed-signal circuit simulations. In the field of hardware verification, the use of declarative property languages in combination with simulation is now standard practice. However the lack of features to specify asynchronous behaviors, or the insufficient integration of verification results, makes existing assertion and measurement languages unable to enforce mixed-signal requirements. We propose several theoretical and practical tools for the description and automatic monitoring of such behaviors, that feature both discrete and continuous aspects. For this we build on previous work on real-time extensions of temporal logic and regular expressions. We describe new algorithms to compute the distance from some simulation trace to temporal logic specifications, whose complexity is not higher than traditional monitoring. A novel diagnostic procedure is provided in order to efficiently debug such traces. The monitoring of continuous behaviors is then extended to other forms of assertions based on regular expressions. These expressions form the basis of our measurement language, that describes conjointly a measure and the patterns over which that measure should be taken. We show how other measurements implemented in analog circuits simulators can be ported to digital descriptions, this way extending structured verification approaches used for digital designs toward mixed-signal
Alaeddine, Ali. "Le Transistor Bipolaire à Hétérojonction Si/SiGe sous contraintes électromagnétiques : des dégradations électriques à l'analyse structurale." Rouen, 2011. http://www.theses.fr/2011ROUES001.
Повний текст джерелаThis work proposes a new methodology for studying the reliability of the Heterojunction Bipolar Transistors (HBTs) in SiGe technology. The originality of this study comes from the use of a targeted electromagnetic field stress by using the near field bench. This type of stress has to degrade the performance of this component causing failure mechanisms. The DC characterizations showed the presence of leakage currents at Si/SiO2 interface, not only between the base and the emitter, but also between the base and the collector. This is attributed to a trapping phenomenon induced by hot carriers which have been generated during stress. This phenomenon has been addressed by the physical modeling, by studying the influence of interface traps on the drift of the HBT characteristics. To identify the failures that can be detected by microscopy, characterization of the structure before and after ageing was performed by Transmission Electron Microscopy (TEM) and energy dispersive spectroscopy (EDS). These analyses revealed the degradation of the titanium layers around the emitter, the base and the collector. The degradations are attributed to the gold (Au) migration into the titanium (Ti) due to the high current density induced by stress. Some of these Au–Ti reactions are known to increase the resistivity of the conducting layers which directly affects the HBTs‟ dynamic performances
Batista, Emmanuel. "Nouvelles structures électroniques pour le transport électrique : impacts des nouvelles contraintes d'intégration sur les interférences électromagnétiques et moyens de prévision de la compatibilité électromagnétique." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/747/.
Повний текст джерелаHigh integration of power system allows a significant reduction of power architecture weight and volume. As a consequence, high current densities and high voltage potentials produce considerable electric and magnetic near-field in confined volume. This new electromagnetic (EM) context induce a new EMCompatibility (EMC) problematic. The work presented here include an experimental switching noise and an EM near-field radiation of power component studies. The multi-physic approach is discussed, especially the electro/thermic/EM links. These complex physic phenomenons are hardly reachable and need a suitable modelling to be correctly tackled. The power signals are wide-range frequency, from a few hertz to a few MHz and are part of both low and high frequencies. Furthermore, power modules are build on complex dielectric/conductive interfaces currently non-symmetric. Conventional numeric methods don't solve these two points. In this memoir, we will give details on the modelling strategy choice and on industrial applications. Some examples will be analysed such as signal integrity problematic and near-field couplings
Pocheron, Mickaël. "Life-time prediction of solder joints used in surface mount assemblies during thermo-mechanical and isothermal aging." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0245.
Повний текст джерелаBecause of ROHS or WEEE directives, in a close future, lead materials will be banned from electronicindustry. Unfortunately, Schlumberger is using high-lead content solders for surface mount devices forhigh temperature applications. Considering this issue, Schlumberger puts in place high amount of investments to replace these solders by lead-free solders. The topic of the work is to study lead free candidates destined to support Schlumberger high temperature mission profiles. The device under test chosen for this project is a surface mount device composed of a passive component connected to a ceramic substrate by solder joints. The predictive study of reliability of these new assemblies for high temperature applications needs two complementary analyses. The first study is to characterize, experimentally, the life time of surface mount assemblies using these new lead free solders submitted to accelerated thermomechanical and isothermal aging tests. Hence, the first benefits for Schlumberger are knowledge on thecompatibility of these new alloys with their current finishes with the microstructure and intermetallic compounds evolution. More over, the main effects due to aging are investigated like failure sites and mechanisms. The second goal of the project is to perform thermo-mechanical simulations of surface mount assembly under thermal cycling. Simulations help to understand local phenomena and estimatefatigue parameters under other thermal conditions. Then, a correlation between experimental results about failure and calculated fatigue leads to an estimation of the life time of the assemblies. Thus, simulations have the advantage to reduce the number of time-consuming and expensive thermo-mechanical agingtests. To perform a simulation, the physical parameters of each solder material are needed like elastic,plastic and creep data. Additional benefits for Schlumberger involve mechanical properties which are, at the moment, unknown for these new high temperature lead free materials
Ribon, Aurélien. "Amélioration du processus de vérification des architectures générées à l'aide d'outils de synthèse de haut-niveau." Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14719/document.
Повний текст джерелаThe fast growing complexity of hardware circuits, during the last three decades, has change devery step of their development cycle. Design methods evolved a lot, and this evolutionwas necessary to cope with an always shorter time-to-market, mainly driven by the internationalcompetition.An increased complexity also means more errors, harder to find corner-cases, and morelong and expensive simulations. The verification of hardware systems requires more andmore resources, and is the main cost factor of the whole development of a circuit. Since thecomplexity of any system increases, the cost of an error undetected until the foundry stepbecame prohibitive. Therefore, the verification process is divided between multiple stepsinvolved at every moment of the design process : comparison of models behavior, simulationof RTL descriptions, formal analysis of algorithms, assertions usage, etc. The verificationmethodologies evolved a lot, in order to follow the progress of design methods. Somemethods like the Assertion-Based Verification became so important that they are nowwidely adopted among the developers community, providing near-source error detection.Thus, the work described here aims at improving the assertion-based verification process,in order to offer a consequent timing improvment to designers. Two contributions aredetailed. The first one deals with the transformation of Boolean assertions found in algorithmicdescriptions into equivalent temporal assertions in the RTL description generatedby high-level synthesis (HLS) methodologies. Therefore, the assertions are usable duringthe simulation process of the generated architectures. The second contribution targets theverification of hardware systems in real-time. It details the synthesis process of a hardwareerror manager, which has to save and serialize the execution context when an error isdetected. Thus, it is easier to understand the cause of an error and to find its source. Theerrors and their contexts are serialized as reports in a memory readable by the system ordirectly by the designer. The behavior of a circuit can be analyzed without requiring anyprobe or integrated logic analyzer