Dissertations / Theses on the topic 'Hybrid AUV'
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Djapic, Vladimir. "Unifying behavior based control design and hybrid stability theory for AUV application /." Diss., [Riverside, Calif.] : University of California, Riverside, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3350079.
Full textIncludes abstract. Title from first page of PDF file (viewed January 28, 2010). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 149-153).
Ben, Salah Jaâfar. "Analyse et commande des systèmes non linéaires complexes : application aux systèmes dynamiques à commutation." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00599364.
Full textPham, Hoang Anh. "Coordination de systèmes sous-marins autonomes basée sur une méthodologie intégrée dans un environnement Open-source." Electronic Thesis or Diss., Toulon, 2021. http://www.theses.fr/2021TOUL0020.
Full textThis thesis studies the coordination of autonomous underwater robots in the context of coastal seabed exploration or facility inspections. Investigating an integrated methodology, we have created a framework to design and simulate low-cost underwater robot controls with different model assumptions of increasing complexity (linear, non-linear, and finally non-linear with uncertainties). By using this framework, we have studied algorithms to solve the problem of formation control, collision avoidance between robots and obstacle avoidance of a group of underwater robots. More precisely, we first consider underwater robot models as linear systems of simple integrator type, from which we can build a formation controller using consensus and avoidance algorithms. We then extend these algorithms for the nonlinear dynamic model of a Bluerov robot in an iterative design process. Then we have integrated a Radial Basis Function neural network, already proven in convergence and stability, with the algebraic controller to estimate and compensate for uncertainties in the robot model. Finally, we have presented simulation results and real basin tests to validate the proposed concepts. This work also aims to convert a remotely operated ROV into an autonomous ROV-AUV hybrid
Pourcin, Florent. "Synthèse de nanoparticules de forme, taille et dispersion contrôlées pour l'élaboration de couches composites aux propriétés optiques modulables." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0365/document.
Full textNanoparticles of noble metals have unexpected optical properties. Under the effect of light, they are able to resonate, generating localized surface plasmon resonances that are used in many applications. These plasmons absorb and scatter the light at the wavelengths of these resonances and are highly dependent on the shape, the size and the environment of the nanoparticles. In this thesis, they are applied for the design of stealth materials for military purposes. For this, controlled shapes of silver nanoparticles were blended within a polymer to develop new hybrid materials that are solution-processed as thin layers. A quasi-perfect absorber (98,8%) in a precise range of wavelengths has been obtained by maintaining well-dispersed nanoparticles in the layer, while an effective broadband absorber (~90%) over the entire visible range has been achieved by triggering the aggregation of the nanoparticles. Microscopy and spectroscopy qualitative studies performed on the density and organization of the nanoparticles within the thin layers revealed the presence of plasmonic couplings of different natures and intensities as a function of the spacing between the cubes. It has been shown that the optical properties measured are independent of the nature of the substrates used and independent of the angle of the incident light on a wide angular range. Finally, solution-processing of multilayers systems was explored to extend the absorption of the layers to the near infrared by the addition of other materials such as tungsten oxide
Poline, Marie. "Contribution aux méthodes de conception et de gestion des systèmes énergétiques multi-sources par optimisation systémique : application aux trains hybrides électrique autonomes." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT099/document.
Full textIn France, there are two traction modes for railway: the diesel and electric traction. Each mode has its own issues. For diesel, the increasing control of the greenhouse gas emissions imposes to evolve this type of train to a less polluting solution. For electric traction, the energy consumption creates a voltage drop which can cause a traffic slowdown, which will limit the traffic development. The studied solution by SNCF is the hybridization of the train (adding storage system).Thus, these works have the objective to build a method to do the pre-sizing of storage systems embedded in trains. Moreover, to take into account the mutual influence of the sizing and the energy management, this last one is included in the sizing model. An optimization algorithm solves the global model.The method has been developed for the two traction modes (diesel and electric) and the optimization has been made with SQP algorithm (Sequential Quadratic Programming)
Meghnous, Ahmed Rédha. "Commande et observation d’une classe de systèmes linéaires à commutations : Application aux convertisseurs de puissance DC-DC." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0137/document.
Full textThis thesis is dedicated to the control and the observation of a class of switched linear systems (SLS). This class contains the systems that can be represented by a port-Hamiltonian model. A lot of works have been studied SLS for several years using an average modeling approach. Recently, various works have shown that hybrid system theory allows to cope with stabilization, controllability, and observability problems of switched linear systems. However, several problems are still open and need more development such as the design of hybrid observers for SLS that have unobservable modes or the control of systems with reduced number of switching inputs and numerous variable states to control. In this work, we are interested in the design of state observers for a particular class of SLS using both the average and the hybrid port-Hamiltonian models. This formalism has the necessary tools to study and establish the stability of the observation errors. At the beginning, a nonlinear observer based on the average modeling is proposed. Next, a hybrid observer is designed for switched linear systems. This observer takes into account the unobservable operating modes of the system. The second point of our work concerns the design of control laws for the considered class of SLS. At first, two Lyapunov-based control laws have been established using either an average model or a hybrid model of the system. A hybrid optimal control based on the maximum principle of Pontryagin and the computation of singular arcs has been also proposed. Finally, a hybrid predictive control based on a discrete model of the system is synthesized. Simulation results and an experimental implementation on a SEPIC converter are given to show the efficiency of the proposed methods. Our motivation to study such a converter is mainly due to its particular topology that includes observable and unobservable subsystems. It is also known to be difficult to be controlled because only one switching input is used to control four state variables
Schattauer, Sylvia. "Hybride Dünnschicht-Solarzellen aus mesoporösem Titandioxid und konjugierten Polymeren." Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2011/5261/.
Full textThe main objective of this thesis is to study the active components and their interactions in so called organic hybrid solar cells. These consist of a thin inorganic titanium dioxide layer, combined with a polymer layer. In general, the efficiency of these hybrid solar cells is determined by the light absorption in the donor polymer, the dissociation of excitons at the heterojunction between TiO2 and polymer, as well as the generation and extraction of free charge carriers. To optimize the solar cells, the physical interactions between the materials are modified and the influences of various preparation parameters are systematically investigated. Among others, important findings regarding the optimal use of materials and preparation conditions as well as detailed investigations of fundamental factors such as film morphology and polymer infiltration are presented in more detail. First, a variety of titanium dioxide layer were produced, from which a selection for use in hybrid solar cells was made. The obtained films show differences in surface structure, film morphology and crystallinity, depending on the way how the TiO2 layer has been prepared. All these properties of the TiO2 films may strongly affect the performance of the hybrid solar cells, by influencing e.g. the exciton diffusion length, the efficiency of exciton dissociation at the hybrid interface, and the carrier transport properties. Detailed investigations were made for mesoporous TiO2 layer following a new nanoparticle synthesis route, which allows to produce crystalline particles during the synthesis. As donor component, conjugated polymers, either derivatives of cyclohexylamino-poly(p-phenylene vinylene) (PPV) or a thiophene are used. The preparation routine also includes a thermal treatment of the TiO2 layers, revealing a temperature-dependent change in morphology, but not of the crystal structure. The effects on the solar cell properties have been documented and discussed. To take advantage of the nanoparticle synthesis, the formation of crystalline TiO2 particles by UV crosslinking and first solar cell measurements are presented. In addition to the nature of the TiO2 layer, the influence of polymer morphology is investigated. Different morphologies are realized by solvent variation and thermal annealing. It is shown that, among other factors, the viscosity of the polymer solution and the infiltration into the TiO2 layer mainly affects the efficiency of the solar cell. Another approach to increase the efficiency is the development of new hole-conducting polymers that absorb over a wide spectral range and which are adjusted to the energy levels of TiO2. Also new concepts, for example, the combination of thiophene- and phenyl-units into a copolymer are investigated in more detail. In summary, important parameters influencing the properties of hybrid solar cells are identified and discussed in more detail. For some limiting factors concepts to overcome these limitations are presented.
Lucien, Laurent. "Contribution à une modélisation globale de la collaboration dans les systèmes multi-agents : Application aux entités mobiles intelligentes." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD039/document.
Full textWe live today in an increasingly complex and interconnected world where many entities, increasingly intelligent, generate a multitude of interactions that can contribute to enrich their capabilities.We are interested in collaboration that will enable complex tasks to be performed by these machines of today and tomorrow by stimulating these structured interactions and integrating intelligent decision-making processes. In this way, it will contribute to improve their functioning and will be able to participate in their improvement (better knowledge of their environment, speed of action and decision-making, provision of new skills).The main objective of the thesis is therefore to contribute to the understanding of what collaboration is, from its definition to its implementation, by highlighting its underlying concepts. We propose a method of analysis (needs and constraints) and a collaborative agent architecture model (HACCA) to integrate all the characteristics of the collaborative processes that we present. We are also showing a first implementation in the GAMA multi-agent platform.As part of this study, we are interested in two cases of application of mobile entities: drones and connected vehicles.Thus we also contribute more to the autonomy needs and decision-making process of drones, connected and autonomous vehicles of the future, in a constrained temporal context where the quality of interactions is essential to optimize the process of achieving objectives
Lavenn, Christophe. "Les thiolates d'or : des polymères de coordination [Au(SR)]n luminescents aux clusters [Aun(SR)m] pour la catalyse hétérogène." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10256.
Full textSmall gold nanoparticles (< 5 nm) are materials presenting a good catalytic activity in oxidations reactions, especially under soft conditions of temperature and pressure. However, it can be difficult to obtain monodisperse particles with a diameter less than 5 nm. In this sense, gold clusters are interesting, because they are atomically defined compounds, presenting a proper formulation. This means that the number of gold atoms and of stabilizers in the clusters are defined and, as they can be isolated pure, they constitue a novel class of perfectly monodisperse nanomaterials. Therefore, we are interested, in this thesis, in the synthesis and assembly of gold clusters. Indeed, gold nanoparticles are usually deposited on a support, resulting in the loss of accessible area. We therefore wanted to use gold clusters as (i) molecular species deposited on a support and (ii) as building blocks to assemble and organize tridimensional networks where the porosity permits the substrates/products diffusions and avoid the support effects. Our study deals with the synthesis of gold clusters, and we are also interested in the gold (I) coordination polymers, which are important reaction intermediates formed during the clusters synthesis and to its photophysical properties. In order to have clusters presenting external functions enabling their assembly or deposition on a support, we developed a novel synthesis suitable for para-substituted thiophenolates. We managed to isolate new clusters stabilized by heterotopic ligands such as [Au25(SPh-pNH2)17]. Those compounds have been deposited on a mesoporous support and used as oxidative catalysts. Our results show that gold clusters are molecular precursors that permit to prepare effective catalysts with narrow particle size (1-2 nm) and presenting high catalytic activity compared to the one exhibited by reference materials
Moussawi, Mhamad aly. "Assemblages à base de polyoxométallates : des interactions fondamentales aux matériaux hybrides supramoléculaires." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLV078/document.
Full textIn this work, we report in the first part the substitution of molybdenum by tungsten within Keplerate-type anions [{Mo6}12Mo30O312E60(AcO)30]42- (E = O or S). Introducing tungsten to the synthesis medium resulted in the isolation of a series of compounds, [{WxMo6- x}12Mo30O312E60(AcO)30]42, with variable metal content within their pentagonal units {M6}. An outstanding observation revealed the selective occupation of the central position in the pentagonal unit by the W atoms. This revelation was stretched to reach other historical structures as Mo-blue wheel [Mo154O462H14(H2O)70]14- and Krebs [Mo36O112(H2O)16]8- anions that also showed the same preferential occupation of W atoms for the heptacoordinated site. In the second part, we focus on the fabrication of a three-component hybrid material based on polyoxometalates (POMs), metallic clusters and -cyclodextrin ( -CD). Investigation of such material has been conducted using bottom-up approach by investigating the specific interactions between CD and both types ofinorganic units. Finally, the three componentsassociate together to give a well orderedpolymer-like hybrid chain that is derived ashydrogel and single crystals. In the last part, we extend the CD-POMinvestigation to reach giant POM structures asthe Mo-blue ring. A non-conventional complexation results from this interaction explained by the encapsulation of the organic macrocycle within the inorganic torus. Increasing the complexity of the system by introducing a third species provoked the formation of a hierarchical hybrid assembly
Zhao, Zhihua. "Systèmes hybrides : de la nanoparticule aux gels." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30118/document.
Full textThis work is focused on the better understanding of the formation of zinc oxide anisotropic nanoparticle through an organometallic synthesis. To start on this project, the development of a statistical tool to analyze nanoparticle sizes and shapes was mandatory. A simple 2D plot with a multivariate statistical analysis is proposed in order to extract, in particular, the correlation between length and width in a collection or a mixture of anisotropic particles. Compared to the usual statistics on the length associated to a second and independent statistical analysis of the width, this simple plot easily points out the various types of nanoparticles and their (an)isotropy. For each class of nano-objects, the relationship between width and length (i.e. the strong or weak correlations between these two parameters) may suggest information concerning the nucleation-growth processes. It allows one to follow the effect on the shape and size distribution of physical or chemical processes such as simple ripening. Various electronic microscopy pictures from the literature or from our own syntheses are used as examples to demonstrate the efficiency and simplicity of such an analysis. Furthermore, following the organometallic approach, well defined crystalline zinc oxide nanorods are obtained through the hydrolysis reaction of dicyclohexyl zinc precursor without solvent in presence of primary fatty amine only. Their mechanism of formation is studied through a multivariate analysis of TEM results and an oriented attachment process is demonstrated. Taking advantage of this mechanism, the size of the ZnO nanorods can be easily adjusted tuned by controlling adjusting the hydrolysis rate, the aging time before hydrolysis, the nature of ligand, and/or the amount of water. During such experiments, a gelification of the chemical media are for the first time observed. This is the origin of the last part of our work, which put forward an original approach for outstanding processable and reshapable hybrid materials. Indeed, we unequivocally demonstrate through various complementary experiments (rheology, NMR, TEM, theoretical calculation, WAXS...) the formation of oligomeric structures in a mixture of fatty amine with organometallic compounds. This oligomerization reaction between the metallic centers induces the formation of a gel which can be processed into fibers, stamped patterns or molded pieces. Metal oxide hybrid materials are obtained merely by hydrolysis of the organometallic gel, which are furthermore liquid crystal. This unprecedented route towards easily processable hydrid and metal oxide materials is demonstrated for zinc oxide and extended to other metal oxides such as tin oxide and iron oxide, proving the universality of the method and paving the way, for example, to new sensitive gas sensors layers
Mercier, de Lépinay Laure. "Habillage mécanique d'un nanofil par un champ de force : de la mesure vectorielle ultrasensible aux systèmes quantiques hybrides." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY016/document.
Full textThe study of the hybrid coupling between the vibrations of a mechanical resonator and a quantum degree of freedom requires extremely high force sensitivities. This was one of the motivations for the recent development of ultra-light nano-oscillators which are ultra-sensitive force probes now routinely operating at the attoNewton level.The first part of this work deals with the mechanical dressing of a silicon carbide suspended nanowire oscillating in two transverse directions. Its Brownian or driven evolution in an external force field modifies its mechanical properties: eigen-frequencies and eigen-directions of oscillation. An optical technique to measure the nanowire vibrations in two dimensions was developed. First, this technique enabled to map out an electrostatic force field, which revealed a dressing phenomenology specific to dimensions greater than one. In particular, shearing components of the force field are responsible for a rotation of the eigen-directions of vibration. Second, the measurement technique was tested in an optical force field applied by a laser focused on the nanowire. This field contains a rotational, non-conservative component. The reported experimental observations: eigenmodes orthogonality breaking, distorsion and amplification of Brownian motion spectra, are all in good agreement with the model of the mechanical dressing. Using a protocol adapted to the multidimensionality of the system, a deviation to the fluctuation-dissipation relation has also been measured, as a consequence of the non-conservative force bringing the system out of equilibrium. The study of this system's thermodynamic properties suggests corrections to the fluctuation-dissipation relation and predicts a squeezing of the oscillator's thermal noise in rotational force fields.The second part of the thesis concerns the hybrid system composed of a nanowire and a spin qubit: a colored NV center in diamond bound to its extremity. The optical properties of this oscillating single photon source are characterized through the measurement of space-time fluorescence correlations on which the oscillator's vibrations are encoded. We then developed a motion measurement technique compatible with very low photon fluxes, in particular inferior to the mechanical decoherence rate. The last part of the manuscript presents a preliminary study of the spin-mechanical coupling. After the observation of a phononic Mollow triplet, the experimental developments of the first part of the thesis were integrated in a second-generation stabilized hybrid experiment bringing the ultrasensitive force measurement within the reach of the hybrid system
Elettro, Hervé. "Le treuil élasto-capillaire : de la soie d'araignée aux actionneurs intelligents." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066229/document.
Full textThis PhD work aimed to understand and recreate artificially a self-assembling mechanism involving capillarity and elasticity present in spider silk. The primary function of the micronic glue droplets that exist on spider capture silk is to provide the spider web with adhesive properties. These droplets play yet another role: the dramatic enhancement of silk mechanical properties, as well as the preservation of the integrity of the web structure. The localization of the buckling instability within the glue droplets, site of over-compression due to the capillary meniscii implies that under compression this special drop-on-fibre system behaves like a liquid, whereas under tension it has a classical elastic spring regime. Spiders have thus found a way to create liquid-solid mechanical hybrids.The first part of my thesis aimed to the characterization of natural samples, which allowed in the second part to build a completely artificial system that mimics the natural samples, through fabrication of centimeter-long micronic soft fibres. The simple addition of a wetting liquid droplet made for an effective system with mechanical properties quantitatively close to that of spider capture silk.Fine characterization of the created drop-on-coilable-fibre systems yielded very good agreement between experimental results and predictions from numerical simulations and a analogy with phase transition, especially for properties such as the threshold for activation, the existence of an hysteresis and the coiling morphology. All those results added up to the design of unconventional techniques in field such as metamaterials and micro-fabrication
Rogani, Ange. "Modélisation de la propagation de dommage post-impact dans des revêtements composites de pales d’hélicoptère." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30185.
Full textHelicopter blades, that are composite structures, can be subject to impacts in flight or at ground. That leads to matrix crackings, fibers breakages and delaminations in the skin of the blade, which is usually made up of three woven plies of carbon/epoxy and glass/epoxy. The damage propagation in flight can be disastrous for the helicopter return and the passenger’s safety. This study aims to identify the damage mechanisms involved in the post-impact damage propagation and to develop a reliable post-impact modelling capable of predict them. The first step of this work was to highlight, with several experimental tests, the post-impact damage propagation scenario in quasi-static and fatigue tension for two hybrid woven laminates commonly used for the skins of helicopter blade. The initial damage size, the stacking sequence and the loading (quasi-static or fatigue) have an influence on the scenario observed. The second step was to adapt the semi-continuous approach, developed by P. Navarro and F. Pascal for impact on woven laminates, to quasi-static and fatigue tensile loadings. For this purpose, developments, based on the experimental observations, have been implemented, such as a compressive break criterion for the fibers and a damaging law in shear able to represent different types of matrix damaging. A strategy of post-impact fatigue simulation has also been implemented. Then, the modelling was compared to the experimental tests performed previously. Finally, the results have been analyzed in order to give a better understanding of the phenomena of post-impact damage propagation in the woven hybrid skins
Ami, Stéphane. "Des circuits logiques hybrides aux circuits mono-moléculaires." Toulouse 3, 2002. http://www.theses.fr/2002TOU30143.
Full textSince the early sixties, limits of the large scale integration of MOS transistors are regularly emphasized. This allows the development of alternative research projects to replace solid state devices. Hybrid molecular electronic is one of them. Nowadays, researches are mainly focused on the design and making of molecular components: diodes, transistors, memories, etc. . . We go further and we propose here a theoretical study of complex logical circuits based on the best today's molecular transistor: the electromechanical C60 transistor. The will to scale down again those circuits leads us to study in a new part their integration in a single molecule. .
Härth-Großgebauer, Kristina. "Beitrag zum Tragverhalten hybrider Träger aus Glas und Kunststoff." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-119957.
Full textIn transparency-oriented architecture, glass beams are increasingly in demand. These load-bearing elements usually consist of multiple glass panes, bonded with polyvinyl butyral foil (PVB foil), and are comparable to laminated safety glass. These glass beams do not assure any level of post-breakage performance after complete glass breakage. Therefore glass thickness and assembly of the beams are chosen with the objective of avoiding complete glass breakage at all costs. Hybrid glass beams typically combine glass with a ductile material and offer a ductile failure mode in case of complete glass breakage. For this reason they represent a promising solution to meet the required safety levels for glass beams. This study deals with hybrid glass beams which are made by bonding panes of glass and transparent plastics using a transparent adhesive. In case of complete glass breakage the plastic material, which is connected to the glass by the adhesive bond, bears the tensile stress whereas the glass is still able to carry the compressive stress. The pre-selection of plastic and adhesive is based on preliminary tests on small specimens. The required quality of the edges of annealed glass was determined by specific four-point bending tests. Because of the considerable difference in thermal expansion between glass and plastics, alternating climate tests were executed on small hybrid components to further evaluate the suitability of the adhesive. Based on the research conducted, the plastic material polycarbonate and a UV- and light-curing acrylate adhesive, which shows a very flexible behavior when hardened, were chosen for further mechanical tests on larger specimens. Short-term tests with constantly increasing load and varying polycarbonate thickness, beam height and glass type provide information on the load-bearing capacity before and the residual load-bearing capacity after glass breakage of the hybrid beams. Comparative tests on laminated glass beams demonstrate the missing residual load-bearing capacity of these components. Loading tests on polycarbonate panes illustrate the need for stabilization of the hybrid beams by the broken glass. Long-term tests were executed by static loading of the intact and broken hybrid beams. The load level and the load duration of the broken beams are based on realistic working conditions. The tests show the difference in the development of the fracture pattern resulting of the lower load and allow the examination of the residual load-bearing capacity at continuous load as well as the process and the reasons behind the beam failure. Based on the tests conducted, three different states of the hybrid beams are categorized and detailed for their easy analytical approach. A discussion of the obtained results and an outlook on further needed research complete the study
Moret, Boris. "Amplificateur de puissance autonome pour applications OFDM et beamforming de la 5G aux fréquences millimétriques en technologie CMOS avancée." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0672/document.
Full textIn order to meet the growing demand for more connected objects and higher data rates,the fifth generation of mobile network (5G) will be deployed. To address thesechallenges, the 5G will use beamforming to improve the transmission quality and extendthe network coverage. Due to the lack of available RF spectrum below 6 GHz, the mobileindustry is studying millimeter wave frequency bands in particular around 28 GHz. Theuse of CMOS technology for 5G applications is promising for the 5G mass market,especially nowadays the miniaturization of CMOS transistors allows competitiveoperation at millimeter frequencies. To meet all the expectations of the 5G especially interms of reliability, new breakthrough ideas, with the self-healing and the selfcontained,allow to use all the benefits of CMOS technology to the maximum whileoffering reliable operation for the amplifier. Within the framework of self-healing andself-contained, several circuits are integrated on silicon such as an amplifier integratedwith a totally non-invasive power detector for self-healing and a balanced self-containedamplifier
Dubary, Nicolas. "Optimisation numérique et expérimentale de la tolérance aux dommages d’impact d’un stratifié composite aéronautique." Electronic Thesis or Diss., Toulouse, ISAE, 2017. http://www.theses.fr/2017ESAE0038.
Full textCoupling with will of mass gain, use of innovative solutions and high performance structures in today’s industrial applications, composites are more and more present in aeronautical structures. However, they are still vulnerable to out-of-plane loading such as impact, due to falling objects during a maintenance operation for instance. This event can drastically reduce their residual strength without let a visible mark onto the surface. Therefore in order to meet requirements and drive to healthy use in service, composites structures are often oversized.This work deals with the experimental and numerical study of the Impact Damage Tolerance (IDT) of an aeronautical composite laminate. An overall study of composite structures integrity leads to a deeper knowledge of the IDT.The approach is based on aeronautical methods for the damages visual inspection: the damage detectability defines the required load that the structure has to sustain. Indeed, the detectability of the damage allows a repair intervention on the structure: as long as the damage is not detectable (BVID), the performance of the structure must remain high. Proposed concepts are experimentally tested to improve the TDI and to bring to more understanding in the behavior of composite laminates. These concepts are based on a reference case, and then declined under different configurations of hybrid composite laminates. The experimental approach of TDI is carried out from impact to compression after impact to define the two main indicators: permanent indentation and residual strength.The model developed at ICA, the Discrete Ply Model (DPM), is used to propose a numerical designing approach according to the TDI philosophy. Modeling improvements are implemented to extend to hybrid composite laminates. This step opens up on the use of DPM as a tool to assist the composite structures sizing. This advanced is in respect with the integration of numerical approaches to support experimental studies, integrating within the framework of "Virtual Testing"
Frikha, Amin. "Contribution à l'étude du blindage magnétique basse fréquence de boîtiers dédiés aux véhicules électriques et hybrides." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112395/document.
Full textThe electrification of transport means, in recent years leads to an increase of the use of the power electronics and the power involved in electric or hybrid vehicles (HEV). With the integration of electronic devices in more compact environments, appear problems of the electromagnetic compatibility (EMC) and the electromagnetic field exposure. To reduce the effects of electromagnetic fields, electromagnetic shielding is one of the possible solutions.This thesis focus mainly on the magnetic shielding at low frequency in near field of enclosures containing power electronics. Usually, the enclosures are equipped with openings and slots which results in degraded performance of the magnetic shield. We develop models for predicting the magnetic shielding taking into account the effects of diffusion, openings and slots.These models will allow designers to control the magnetic shielding constraints of embedded electronic devices in vehicles. The ability or capability of numerical methods to solve the problems of the magnetic fields diffusion in thin sheets in the presence and absence of openings is presented. In the case of enclosures with slots of small dimensions's, magnetic moments approaches are developed for the prediction of magnetic shielding effectiveness. Test benches are developed to validate these models. In the general case, so-called “hybrid” approaches combining the analytical and numerical methods are developed and experimentally validated. The developed approaches are also applied in the framework of an industrial application
Villa, Trapala Tania. "Gestion dynamique de ressources appliquée aux réseaux cellulaires avec interférence." Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0054/document.
Full textThe aim of this thesis is to design, implement and evaluate practical cross-layer algorithms. We focus on LTE and post-LTE uncoordinated networks where interference is a key issue given the new traffic patterns. The goal is to allocate the radio resources in an efficient way. We develop mathematical and computational interference models that allow us to understand the behavior of such networks and we apply an information-theoretic approach to different interference scenarios and traffic characteristics. We have tried to remain as close as possible to practical systems to be able to test the feasibility of the proposed techniques. The thesis deals with performance evaluation of interference scenarios in 4G networks, in particular those arising from small-cell deployments. The work in this thesis also deals with analysis of resource-allocation and incremental-redundancy based hybrid automatic repeat request (HARQ) for bursty interference (or more general time-varying channels) which allows for only partial channel state information at the transmitter. The work is then applied to practical scheduler design for LTE base stations and includes performance analysis for real LTE modems
Probst, Sebastian [Verfasser], and Ustinov A. [Akademischer Betreuer] V. "Hybrid quantum system based on rare earth doped crystals = Hybrides Quantensystem basierend auf Kristallen mit Seltenerddotierung / Sebastian Probst. Betreuer: A. V. Ustinov." Karlsruhe : KIT-Bibliothek, 2015. http://d-nb.info/1066736839/34.
Full textEl, Hami Norelislam. "Contribution aux méthodes hybrides d'optimisation heuristique : Distribution et application à l'interopérabilité des systèmes d'information." Phd thesis, INSA de Rouen, 2012. http://tel.archives-ouvertes.fr/tel-00771360.
Full textGuadri, Ahmed. "Architecture pour la reconfiguration en temps réel des systèmes complexes." Phd thesis, Ecole Centrale de Lille, 2009. http://tel.archives-ouvertes.fr/tel-00579518.
Full textRadal, Léa. "Synthèse, caractérisation et complexation aux métaux de transition de ligands hybrides ferrocénylphosphine di- et trifonctionnels." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCK001.
Full textOrganometallic compounds with at least one metal-carbon bond are used in various fields of chemistry: for example, in medical research for anticancer treatments, in catalytic reactions as catalysts or ligands, in electrochemistry for their redox potentials, in materials chemistry for their optical and electronic properties. The principal family of organometallic compounds of this thesis is ferrocene due to its physical and chemical properties particularly its robustness and the possibility of multiple substitutions on cyclopentadienyl ligands, the dissymmetric functionalization of these cyclopentadienyl rings being a major challenge.The first part of this thesis describes the bibliography of syntheses of phosphorus-containing hybrid ferrocene compounds and their studies as ligands in coordination chemistry and catalysis.The second part focuses on the development of two new hybrid ferrocene families [Brönsted acid/Lewis base] on a dialkylated ferrocene platform with constrained conformation. More precisely, the synthesis and complexation of ligands type [PR2/CO2H] and [PR2/CONHCH2SO3NHEt3] have been done. Interestingly, the evolution of the former ligand type by amidation allows us to have an access to more polar ferrocene families (latter type).The third part investigates the development of trifunctional hybrid ferrocenes type [phosphine/aminoacid]. Various aminoacids have been introduced to diversify steric environments, lock the ligand structures and favor various modes of complexation with transition metals to use in selective catalysis
Youssef, Abdul-Munhem. "Nouvelles technologies de protections contre les radiations et de contrôle thermique intégrées dans les circuits hybrides embarqués : application aux circuits préemplificateurs hybrides de l'expérience STAFF du projet CLUSTER de l'Agence spatiale européenne, ESA." Châtenay-Malabry, Ecole centrale de Paris, 1991. http://www.theses.fr/1991ECAP0223.
Full textYang, Hao. "Fault tolerant control design for hybrid systems." Thesis, Lille 1, 2009. http://www.theses.fr/2009LIL10068/document.
Full textHybrid systems (HS) are dynamical systems that involve the interaction of continuous and discrete dynamics. This thesis is concerned with the design of fault tolerant controllers (FTC) for that kind of systems. Firstly, for HS with various switching a set of FTC methods based on continuous system theories are proposed to maintain the systems' continuous performance. Two natural ideas are considered: One way is first to design FTC law to stabilize each faulty mode, and then apply the stability results of HS. Another way is to research directly the stability of HS without reconfiguring the controller in each unstable faulty mode. Secondly, for HS where discrete specifications are imposed, a set of schemes are derived from discrete event system (DES) point of view to keep these discrete specifications. The key idea is to reconfigure the discrete part by taking into account the reachability of the continuous dynamics, such that the specification is maintained. Finally, based on HS approaches, several supervisory FTC schemes are developed. The proposed FTC schemes do not need a series of models or filters to isolate the fault, but only rely on a simple controller switching scheme. The stability of the system during the fault diagnosis and FTC delay can be guaranteed.The materials in the monograph have explicit and broad practical backgrounds. Many examples are taken to illustrate the applicability and performances of the obtained theoretical results, e.g. Circuit systems; DC motors; CPU process; Manufacturing system; Intelligent transportation systems and electric automated vehicles, etc
Griebel, Dragan. "Fluoreszente, hybride Nanosensoren auf Silicatbasis für die Bioanalytik." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969694253.
Full textCarbillet, Stani. "Contribution aux calculs fiabilistes sur des structures composites." Besançon, 2005. http://www.theses.fr/2005BESA2001.
Full textThe objective of this study is to contribute to the development of a tool reliability for laminated composites with organic matrix reinforced by long fibres. For that an indicator of confidence, based on the evaluation of the probability of failure, is used. To obtain a relevant result, it is essential to have a model of the mechanical behaviour most complete possible. The méso-macro allows the damaged visco-elastoplastic behaviour of the laminate to be predicted from a model of the elementary ply. In order to calculate in a precise way the mechanical answers of the laminate, the finite element method is used. The shell triangular element developed on the LMARC was extended to the case of laminates and was established in the finite element computer code CAST3M®. It is then associated to the incremental laws deduced from the developed behaviour relations. Being given the complexity of the model, the identification of these parameters claims the realisation of multiaxial tests and an adapted numerical algorithm. The tests were carried out on tubular laminated structures combining traction and internal pressure. To avoid the local optima a method based on a hybrid algorithm (associating the advantages of the genetic algorithms and the local methods) is proposed. The reliability method used (FORM: First Order Reliability Method) makes it possible to define an index of reliability connected to the probability of failure. The space variability of the material properties is introduced by carrying out a space discretisation of the structure and by regarding the parameters as correlated random variables
Sciortino, Flavien. "Nouveau procédé d'élaboration de nanocapsules inorganiques et hybrides (Hybridosomes®) : des films multifonctionnels aux applications biomédicales." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S169/document.
Full textNanotechnology research activities have been intensifying for several decades as a result of its high potential in the development of a wide range of applications ranging from medicine to future’s energy. Research has led to the emergence of many nanoparticles with tunable properties by modifiying the composition, size, shape or surface properties. This versatility has led to the emergence of multifunctional nanoparticles that have demonstrated clinical interest in medical imaging or cancer therapy. More recently, research has focused on the assembly of nanoparticles into nanostructures in order to combine their properties within the same particle. This PhD manuscript present a novel process of self-assembling of inorganic nanoparticles into nanocapsules, stabilized by a polymer and called Hybridosomes®. In a first part, we present the characteristics of this new class of nanocapsules through the study of the process of self-assembly and with a full set of characterization techniques. We also present their evaluation as contrast agent for Magnetic Resonnance Imaging (MRI). Moreover, we propose future research outlooks for Hybridosomes® as a potential multifunctional platform for medical imaging and therapy. In a second part, we present the application of Hybridosomes® in the self-construction of the first nanostructured films by an electro-click process. Through several analysis techniques we demonstrate the versatility of such constructed films and their cargo release properties triggered by different stimuli. In a third part, we enlarged the process of self-assembly to another type of nanoparticles: octahedral molybdenum clusters. For the first time, nanocapsules and nanospheres exclusively based on A2[Mo6Li8La6] clusters have been self-assembled. These new types of nanomaterials have been characterized and evaluated regarding their catalytic properties
Leclaire, Julien. "Fonctionnalisation sur mesure de dendrimères phosphorés : de l'interface chimie-biologie aux matériaux hybrides." Toulouse 3, 2003. http://www.theses.fr/2003TOU30116.
Full textSix, Béranger. "Génération automatique de modèles pour la supervision des systèmes dynamiques hybrides : application aux systèmes ferroviaires." Thesis, Lille, 2018. http://www.theses.fr/2018LIL1I048.
Full textThis thesis work contributes to perform a automed model builder for Hybrid Dynamic Systems (HDS) with numerous modes. Technological components including sensors with an iconic format can be automatically export from a computer-aided design (CAD) scheme or manually drag from database and interconnected, so as to produce the overall HDS model, following industrial technological schemes. Once the model has been created, block diagram for simulation and diagnosis and a Fault Signature Matrix (FSM) could be generated.The theory and algorithm behind the software are based on Hybrid Bond Graphs (HBG). The switching behaviour engenders variables dynamics (particularly causal changes). To solve this problematic, news algorithm are performed. Compared with developed programs for automated modelling, the presented algorithm are valid for continuous, discrete and hybrid systems. The theory is illustrated by an industrial application which consists of the pneumo-electrical control of rolling stock
Marx, Swann. "Méthodes de stabilisation de systèmes non-linéaires avec des mesures partielles et des entrées contraintes." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT040/document.
Full textThis thesis is about the stabilization of nonlinear systems with partial measurements and constrained input. The two first chapters deals with saturated inputs in the contex of infinite-dimensional systems for nonlinear abstract equations and for a particular partial differential equation, the Korteweg-de Vries equation. The third chapter provides an output feedback design for two Korteweg-de Vries equations using the backstepping method. The fourth chapter is about the output feedback design of nonlinear finite-dimensional systems for which there exists a hybrid controller. A high-gain observer strategy is used
Tuncay, Zuhal [Verfasser]. "Hybrid-Matrix-Systeme aus Polyurethanen und Polymethacrylaten für Composite-Anwendungen / Zuhal Tuncay." Paderborn : Universitätsbibliothek, 2017. http://d-nb.info/113316496X/34.
Full textBrottier, Laetitia. "Optimisation biénergie d'un panneau solaire multifonctionnel : du capteur aux installations in situ." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLN009/document.
Full textIn the context of the fight against climate change, the building is a strategic sector to address because of its high consumption of heat and electricity. Solar energy, both thermal and photovoltaic, has strong assets to meet this challenge and is becoming more and more cost-competitive. In particular, the PVT hybrid solar is a promising solution with a double advantage: the extraction of heat under the photovoltaic module brings both a gain in electrical efficiency, and a gain by generating heat for the needs of the building. The state of the art demonstrates the diversity of solar hybrid technologies, and this thesis specifically addresses the unglazed flat-plate design with water as the heat transfer fluid. To address sustainability and performance issues, the company DualSun designed a PVT hybrid module with a stainless steel heat exchanger directly laminated during the photovoltaic module process.The analysis of the DualSun collector is done in Part I, first with a 3D model of the exchanger. This model makes it possible to determine minimum flows, to quantify the interest not to insulate the edges of the module and to visualize that the pressure drop for this concept is mainly related to the inlets and outlets of the module but remains acceptable. Given the limitations in terms of scope and calculation time of this 3D model, simplified models are proposed and compared. The results of these simplified models corroborate a stagnation temperature of the DualSun concept of around 75°C, which confirms that the design is intrinsically resilient to overheating even in the absence of hot water consumption. Finally, thermal performance on 9 prototypes with layer-by-layer composition variations confirm that the model is robust. The models demonstrate that the 250Wp non-insulated version of the PVT panel has a thermal power output of 758 Wth for hot water needs at 30°C.A system analysis of these modules integrated in a complex system is carried out in Part II. For the preheating Domestic Hot Water system (DHW), four software programs, PVSyst, PVGis, Polysun, Solo are compared to Trnsys with the Type 295 and Type 816, which integrate the two simplified models of the module defined in the section I. The physical models of these software programs are consistent with each other in the field of use.The results of these software programs used from statistical data for the weather and consumption habits are compared to field measurements on 28 DHW (domestic hot water) hybrid installations in private homes. The objective was to quantify the errors of estimation of the statistical predictions with respect to the reality. While the standard deviation of PV output and maximum temperatures reached by the modules related to the uncertainty on the weather is low (about 10%), the standard deviation of estimated hot water needs based on an average consumption is much higher (about 30%) because of irregular consumption behavior in individuals in terms of time and volume depending on the days. The average temperatures reached at the level of the modules are higher than 45°C during half of the year and allow an effective preheating of the sanitary tank. Solar covering of hot water needs of 57-58% are measured near Lyon.For combined solar and heat pump (HP+) systems in multi-dwelling buildings and for pool heating (SP) systems, statistical models allow a reliable evaluation of the energy production because of stable hot water needs.In conclusion, solar hybrid should be a key technology for the energy transition of buildings in the coming years. PVT technology will evolve to reduce costs from year to year as observed with photovoltaic technology and thus strengthen its cost-competitive position against gas as a heat source for homes and buildings
Berger, Anja. "Versuche zur Klonierung der Rosmarinsäuresynthase und anderer Gene der Rosmarinsäure-Biosynthese aus Coleus blumei." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963415468.
Full textRichard, Jason. "Nanoparticules de silices mésoporeuses ordonnées fonctionnalisées par des polymères : de l’écoconception aux propriétés." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2019. http://www.theses.fr/2019ENCM0013.
Full textThis work deals with the ecodesign of ordered mesoporous silica (SMO) functionalized by polymers, which combine the advantages of mesoporous materials and those of polymers. The materials were structured by polyion complex (PIC) micelles, formed by electrostatic complexation between a polyamine (oligochitosan) and a double-hydrophilic block copolymer (DHBC). The copolymer has a functional polyacid block and a neutral PEO block that remained anchored in silica walls during the sol-gel process. The functional groups were revealed in the mesopores after the release of polyamines induced by PIC micelle dissociation upon a pH change. During this thesis, we expanded the synthesis route to a variety of mesostructures, morphologies and acid functions (poly(acrylic acid), poly(sulfonic acid)). First, the mesostructure was controlled by modifying the pH, the length of the oligochitosan and the conformation of the DHBC (linear PEO or brush-like PAPEO), resulting in SMO with lamellar, 2D hexagonal, and spherical cubic structures. The results were interpreted in terms of PIC assemblies morphology changes and allowed establishing a phase diagram. Then, a method was developed to control particle growth and ensure their stabilization by replacing part of the structuring DHBC by a stabilizing polyacrylamide-based DHBC (PAM-b-PAA). Nanoparticles were obtained with adjustable sizes between 200 nm and 1000 nm, well-defined morphology and ordered structures. The dissociation of PIC micelles in materials was then optimized to synthesize materials with a high density of acid functions in their mesopores (2.7 per nm3). Various materials with controlled size, structure and acidity were thus obtained. They were evaluated as adsorbents, catalysts and proton conductors. Of particular interest are the strong polyacid functionalized materials, exhibiting a very high proton conductivity (> 0,02 S.cm-1) stable over days
Rampazzi, Vincent. "Chimie de coordination du phosphore aux métaux du groupe 11 : progrès en catalyse de couplage C-N au Cu(I) et nouveaux complexes polyphosphines de l'Au(I)." Thesis, Dijon, 2014. http://www.theses.fr/2014DIJOS025/document.
Full textNowadays, sustainable development encourages chemists to develop new economic and ecologic synthesis, because natural ressources are reducing. Most exploited ressources are gas and petroleum, but precious metals are also essential. This thesis is focusing on the enhancement of gold and copper complexes, obtained in our laboratory from phosphorous-based ligands. In the first part, we will develop a new system for the N-arylation of pyrazoles from a copper complexe coordinated by a new hybrid phosphinoalkene ligand. In the second part, coordination properties of gold to different ferrocenic polyphosphine will be studied. Several new innovative complexes will be isolated, and could be used in future catalytic or luminescent studies
Lecuyer-Le, Bris Romain. "Modélisation numérique et expérimentale de la captation d'énergie houlomotrice : application aux essais à échelle réduite en bassin." Thesis, Brest, 2022. http://theses-scd.univ-brest.fr/2022/These-2022-SML-Mecanique_genie_mecanique_mecanique_des_fluides_et_energetique-LECUYER_LE_BRIS_Romain.pdf.
Full textThe behaviour of wave energy converters (WEC) is non-linear and complex to model accurately, especially due to the fluid–structure interaction and the randomness of the wave. The ability of a WEC to recover some of the wave energy depends on the control strategy used and the reliability of the behaviour model. Numerical computation time must remain reasonable in order to allow real–time control. In this context, perfect fluid calculations are used to model the fluid-structure interaction at first order. This diffraction–radiation approach highlights the delay functions of the system, a detailed analysis of which has been carried out in this work and illustrated on a reference case. This thesis proposes to establish a method applicable to the modelling of any type of multi-body WEC. The formulation of the hydrodynamic forces resulting from the assumptions of perfect fluid is then supplemented with semi–empirical terms in order to take into account non–linear effects. The viscous forces represented are particularly influential in the vicinity of the motion resonances. This method also allows the integration of experimental data into the numerical model. Experimental work was therefore carried out in order to understand, quantify and integrate the effects observed experimentally for an anchored body into the numerical model. Finally, elements in favor of an experimental campaign for a two-body system are presented
Pügner, Tino. "Entwicklung eines hybrid-integrierten Gitterspektrometers basierend auf einem mikro-opto-elektro-mechanischen Bauelement." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-197435.
Full textDas Thema der vorliegenden Arbeit ist die Entwicklung eines hybrid-integrierten Gitterspektrometers basierend auf einem mikro-opto-elektro-mechanischen Bauelement. Auszeichnen soll sich das spektrale Messsystem durch einen miniaturisierten Aufbau mit dem Volumen eines Stück Würfelzuckers, einem dementsprechend geringen Gewicht und einer niedrigen Leistungsaufnahme. Im Vergleich zu bereits verfügbaren kompakten Spektralapparaten gleicher Funktionsweise ergeben sich Vorteile hinsichtlich Mobilität, Portabilität, Energieeffizienz, Anwendbarkeit in der Vor-Ort-Analytik und Sensorintegration. Mit miniaturisierten Spektrometern lassen sich neue Anwendungsgebiete adressieren und für bestehende Applikation bislang ungenutzte Entwicklungspotenziale erschließen. Exemplarische Einsatzfelder sind die Lebensmittelanalytik, Medizin- und Umweltmesstechnik, Qualitäts- und Prozesskontrolle, Bioenergiegewinnung sowie Sicherheitsanwendungen. In diesen Gebieten spielen die in unserem Alltag oft vorkommenden organischen Verbindungen eine wichtige Rolle. Zu ihrer qualitativen und quantitativen Analyse ist insbesondere der nahinfrarote Spektralbereich geeignet, in welchem das hybrid-integrierte Gitterspektrometer messen soll. Der Aufbau des Systems entspricht einem Czerny-Turner-Gittermonochromator, der durch ein drehbar gelagertes Beugungsgitter sowie eine getrennte Kollimations- und Refokussieroptik charakterisiert wird. Durch die Drehung des dispersiven Elementes verschiebt sich das Spektrum über einen ortsfesten Detektor, der die zeitdiskrete Abtastung durchführt. Im miniaturisierten Spektrometer ist das Gitter Teil eines am Fraunhofer IPMS hergestellten mikro-opto-elektro-mechanischen Bauelementes mit einer Fläche von nur 50 mm². In dieser Komponente sind neben dem dispersiven Element auch dessen Antrieb, die Positionsdetektion zum Bestimmen der Gitterauslenkung und zwei optische Spalte zusammengefasst. Die Strategie, mehrere Funktionskomponenten über geeignete Mikrofertigungstechniken in ein Bauteil zu integrieren, wird auch auf alle anderen Systembestandteile angewendet. Die Aufbau- und Verbindungstechniken zum Justieren und Montieren der komplexen Bauelemente berücksichtigt eine potenzielle Serienfertigung. Neben den theoretischen Grundlagen, dem Stand der Technik, den Systemspezifikationen sowie den konstruktiven und experimentellen Resultaten befasst sich die Arbeit eingehend mit technologischen und konstruktiven Randbedingungen, einer analytischen Systembeschreibung und der Behandlung des Lösungsraumes für diese Klasse von Spektralapparaten
Geitner, Gert-Helge. "Bewegungssteuerungen auf Basis des Hybriden Funktionsplanes." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-118700.
Full textThe department committee 4.12 "Motion control of machine tools and processing machines" of the VDI/VDE Society for Measurement and Automatic Control (GMA) has established a manufacturer-neutral guideline No. 3684 for event-driven systems with multi-dimensional motion sequences. This guide-line is entitled "Description of event-driven motion processes by function charts" and constitutes a graphically clear design and documentation tool that is well-suited for interdisciplinary application. The block library Function Chart has been defined based on system descriptions suggested in guideline 3684. This library makes available a uniform design procedure. It covers the documentation, the behaviour test of event-driven systems by means of simulation including the early detection of design process faults, the test of realization variants as well as the code generation. Block library Function Chart is an add-on library for SIMULINK. With regard to its essential features it has been developed for the design, simulation, code generation and the description of event-driven systems especially for mechatronics, mechanical and electrical engineering. The created block icons make it possible to get familiar with add-on library Function Chart within a short period of time whereupon block mnemonics may be hidden in order to get a high graphical clearness and to fulfil the requirements of the guideline. Versions 3.1 bilingual on-line block help is available for all blocks. Graphically programmed function charts may be checked for input and programming errors preferably with help of Toolbox "Function Chart Check" by means of GUI's and if necessary also by MATLAB scripts. The check may be done completely or alternatively for selected errors. Output of result is possible either in detail inclusively eventual hints or in shortened form. A function chart may be checked for parameter errors (e.g. state and FUP numbers, variables, error handling), syntax errors (see guideline), dead ends (first or all) and uncoupled loops (arithmetic loops). Standard ANSI C compiler availability stands for a precondition for real time code generation. The block library Function Chart offers a reasonable alternative and allows separate motion error handling sequences which are separated from normal motion sequences without any loss of a well-ordered graphical arrangement. Currently 11 examples demonstrate the application of the blocks
Geitner, Gert-Helge. "Bewegungssteuerungen auf Basis des Hybriden Funktionsplanes." Technische Universität Dresden, 2000. https://tud.qucosa.de/id/qucosa%3A27062.
Full textThe department committee 4.12 "Motion control of machine tools and processing machines" of the VDI/VDE Society for Measurement and Automatic Control (GMA) has established a manufacturer-neutral guideline No. 3684 for event-driven systems with multi-dimensional motion sequences. This guide-line is entitled "Description of event-driven motion processes by function charts" and constitutes a graphically clear design and documentation tool that is well-suited for interdisciplinary application. The block library Function Chart has been defined based on system descriptions suggested in guideline 3684. This library makes available a uniform design procedure. It covers the documentation, the behaviour test of event-driven systems by means of simulation including the early detection of design process faults, the test of realization variants as well as the code generation. Block library Function Chart is an add-on library for SIMULINK. With regard to its essential features it has been developed for the design, simulation, code generation and the description of event-driven systems especially for mechatronics, mechanical and electrical engineering. The created block icons make it possible to get familiar with add-on library Function Chart within a short period of time whereupon block mnemonics may be hidden in order to get a high graphical clearness and to fulfil the requirements of the guideline. Versions 3.1 bilingual on-line block help is available for all blocks. Graphically programmed function charts may be checked for input and programming errors preferably with help of Toolbox "Function Chart Check" by means of GUI's and if necessary also by MATLAB scripts. The check may be done completely or alternatively for selected errors. Output of result is possible either in detail inclusively eventual hints or in shortened form. A function chart may be checked for parameter errors (e.g. state and FUP numbers, variables, error handling), syntax errors (see guideline), dead ends (first or all) and uncoupled loops (arithmetic loops). Standard ANSI C compiler availability stands for a precondition for real time code generation. The block library Function Chart offers a reasonable alternative and allows separate motion error handling sequences which are separated from normal motion sequences without any loss of a well-ordered graphical arrangement. Currently 11 examples demonstrate the application of the blocks.:1. Einleitung 2. Ausgangspunkt Arbeitsdiagramm 3. Hybrider Funktionsplan 3.1 Begriffsbestimmung 3.2 Anwendungsbeispiel 3.3 Vom Arbeitsdiagramm zum Hybriden Funktionsplan 4. Steuerungstechnische Umsetzung 4.1 Auswahl einer Basissoftware 4.2 Maschinenkodeerzeugung mit der Basissoftware 5. Projektierung mit FUP 5.1 Eigenschaften der SIMULINK Blockbibliothek FUP 5.2 Projektierungsschritte 6. Ausblick
Oukkacha, Ismail. "Approche systémique de la gestion d'énergie électrique par stockage électrochimiques dédiés aux applications de transport “Electric Vehicles Energy Management using Lithium-batteries and Ultracapacitors” “Onboard energy management for electric vehicles applications — Using fuel cell and ultracapacitors” “Electric vehicles energy management using direct torque control -space vector pulse width modulation combined to polynomial controllers” “Energy management in Electric Vehicle based on frequency sharing approach, using Fuel cells, Lithium batteries and Supercapacitors”." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMLH27.
Full textThe research work presented in this document is a continuation of the GREAH laboratory research activities on the issues of optimal energy management on board of electric and hybrid electric vehicles. Indeed, the coupling of several electrical energy sources with different characteristics causes several issues like energy sources sizing, energy exchange quality and the lifetime of the interconnected elements. In the case of transport applications, the main factors of these problems are based on the high fluctuations in the power required by the propulsion/traction chain; the limited life expectancy of the electrical energy storage elements; the lack of realistic standard mission profile and the need to optimize the electric vehicles energy consumption. The appropriate method for studying the multi-source systems is by using systemic approach. This approach is necessary to establish behavioral models of energies sources and power converters for the development of optimal energy management strategies. The contribution of this thesis is focused on the investigation and the development of energy management strategies considering the electrical energy sources performances and their state of functioning according to the power fluctuations from the propulsion/traction chain, which presents the load in a touristic vehicle
Pericaud, Jessica. "Des disques proto-planétaires aux disques de débris : étude des disques hybrides : observations dans le domaine millimétrique." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0113/document.
Full textThe study of the transition between proto-planetary gas-rich disks and debris disks, where gas has disappeared in a few millions years, is crucial to constrain the planet formation mechanisms. More ans more gas-rich debris disks are detected. I have studied some of those disks where observations suggest that gas is still primordial. Thanks to radio interferometers suche as ALMA and NOEMA, i have observed in details the debris disk around the ten millions year okd HD 141569 star, of spectral type A0V. My observations reveal the gas disk is primordial and is dissipating, which makes the disk a hybrid system. The milimeter dust has also evolved, since its emission is weak and has e spectral index beta typical of large grains. To detect more hybrid disks, i have observed th CO gas in 25 disks with APEX and the IRAM 30 m. Around HD 23642, CO emission is detected at 4 sigma and coukd correspond to a peculiar disk, since it surrounds binary stars in the Pleiades cluster, which age is estimate around 125-130 millions years. The emission of the gas and dust is correlated for all types of disks but hybrids, where the high flux ratio might be due to a rapid dust evolution. It remains to know whether this phase is common to all disks to understand the implications of this phenomenon
Paroissien, Eric. "Contribution aux assemblages hybrides (boulonnés/collés) - Application aux jonctions aéronautiques." Phd thesis, Université Paul Sabatier - Toulouse III, 2006. http://tel.archives-ouvertes.fr/tel-00171103.
Full textJenkner, Martin. "Hybride Netzwerke aus Neuronen von Lymnaea stagnalis und Silizium-Chips." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=95978649X.
Full textBrum, Raphael Martins. "Conception hybride CMOS et mémoires magnétiques : applications aux architectures programmables." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20141.
Full textWith 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
Bou, Malham Christelle. "Méthodologie d’optimisation hybride (Exergie/Pinch) et application aux procédés industriels." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEM082.
Full textIn the perspective of the prevailing and alarming energy scene, this doctoral work puts forward a methodology that couples pinch and exergy analysis in a way to surpass their individual limitations in the aim of generating optimal operating conditions and topology for industrial processes. A global methodology, a hybrid of the two thermodynamic methods in an intertwined approach with heuristic rules and numerical optimization, is therefore evoked. Using new optimizing exergy-based criteria, exergy analysis is used not only to assess the exergy losses but also to guide the potential improvements in industrial processes structure and operating conditions. And while pinch analysis considers only heat integration to satisfy existent needs, the proposed methodology allows including other forms of recoverable exergy and explores new synergy pathways through conversion systems. After exhibiting the guidelines of the proposed methodology, the entire approach is demonstrated on two industrial systems, a vacuum gasoil hydrotreating process and a natural gas liquefaction process. The application of the methodological framework on realistic processes demonstrated how to adjust each process operating conditions and how to implement conversion systems ensuing substantial energy savings
Dwadnia, Nejib. "Ligands ferrocéniqes hybrides (P, N) : synthèse, coordination aux métaux et applications en catalyse de couplage d'arylation." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCK050/document.
Full textThe research theme developed during this thesis concerns the development of new hybrid ferrocene hybrid (P, N) ligands with controlled conformation, robust and stable to air. These hybrid tetradent ligands comprise two types of coordinating functions with distinct steric and electronic properties. Their coordination chemistry with metals such as gold or palladium has been studied and some isolated Au (I) complexes have been used in the arylation coupling catalysis of aryl iodides
Lindberg, Filippa. "Hybrid War: A Conceptual History Study : The meaning of hybrid war in the scholarly debate between 2008-2021." Thesis, Försvarshögskolan, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-10271.
Full textManseri, Ldjoudi. "Développement d'une stratégie d'endommagement intra/interlaminaire pour une approche semi-continue : application aux stratifiés unidirectionnels et hybrides." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30259.
Full textComposite structures composed by unidirectional layers are widespread in the aeronautical field for their very high strength to mass ratio. However, they may undergo impacts that can generate matrix cracking, delamination and fiber breakage. This has an adverse effect during low velocity impacts, especially on thick structures where delaminations, are located inside the structure and are difficult to detect with the naked eye. The objective is then to propose a model able to catch very precisely the initiation and the propagation of delamination based on the Semi-Continuous strategy. This work begins with the development of a new intralaminar interface element able to get the behavior of matrix cracking, precursor of delamination. This element is inserted between UD elements (rods + shell) of the Semi-Continuous strategy developed in previous works. In order to represent the link between matrix cracking and delamination, a intra/interlaminar coupling is introduced. The addition of this specific element required to adapt the behavior of other elements of the model so that the overall kinematics would be consistent with experimental results. This strategy was validated through quasi-static indentation and impact tests at different energies. The numerical results obtained correlate very satisfactorily with those of the tests. Finally, tests on hybrid laminates (UD/Woven) were carried out on the one hand to optimize the response of thick structures and on the other hand to evaluate the response of the model in situations outside its validation area