Дисертації з теми "Commande à base d’observateur"
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Belkhiat, Djamel Eddine Chouaib. "Diagnostic d’une classe de systèmes linéaires à commutations : approche à base d’observateurs robustes." Thesis, Reims, 2011. http://www.theses.fr/2011REIMS020/document.
Повний текст джерелаThis thesis focuses, in first and foremost, on the model-based diagnosis of a class of SLC (Switched Linear Systems). The basic idea is to consider the continuous and discrete aspects, forming an SLC, explicitly.In this context, we proposed a methodology for detecting and locating faults that combines the tools originally dedicated to the continuous systems and the DES (discrete event systems) diagnosis. The proposed approach is designed around three modules: two types of residual generators (from the continuous Automatic) and anon-line estimator of the discrete state, called diagnoser (from the event Automatic). Our diagnoser uses the residual generators issue from the continuous part to identify the SLC mode and isolate sensor faults.Residues used for fault location sensors are generated through a generator developed around a scheme DOS(Dedicated Observer Scheme) based on hybrid observers. These observers are robust vis-à-vis the unknown input and sensitive to sensor faults. Secondly, based on the obtained results using the previous diagnosis approach, we proposed a preliminary approach for fault-tolerant state-feedback control law synthesis. This approach preserves the nominal performance of the system (as non-defaulting) in the presence of defective sensors. The idea is to reconfigure the state feedback by replacing the state vector estimated from defected output by another estimated from non-defected one. Redundancy estimates is provided in this approach by a bank of robust hybrid observer that provides several accurate estimates of state vectors and outputs
Ait, Ladel Ayyoub. "Commande tolérante aux défauts des systèmes à multimodèles : application à des systèmes à multi-source d'énergie." Electronic Thesis or Diss., Aix-Marseille, 2022. http://theses.univ-amu.fr.lama.univ-amu.fr/220330_AITLADEL_882kmyqu655hkbca383zrkcz402ihwf_TH.pdf.
Повний текст джерелаThis thesis deals with the fault detection/estimation and fault-tolerant control challenges through integrated design. The aim is to design control strategies able to maintain robust and acceptable performance even in the presence of faults. The considered systems are dynamic in nature and are multi-model. The approaches proposed in this thesis consist in formalizing the integrated design of the detection/estimation and fault-tolerant control units in the form of linear matrix inequalities to overcome the difficulty posed by the observer/controller coupling. These approaches provide the ability to consider the different interactions between the system, the detection/estimation unit, and the control unit. Therefore, ensuring a global stability analysis of the closed-loop system and robust performances in terms of detection/estimation, control, and fault compensation. The thesis is mainly composed of three parts. In the first part, results on the control in the presence of sensor or actuator faults are established for switched linear systems. In the second part, extensions to switched nonlinear systems with sensor and actuator faults are proposed. Finally, the third part consists of a complete study of a renewable energy system. It is a multi-source/multi-load system designed to meet multiple demands and is subject to the intermittency of renewable energies
Nasser, Habib. "Systèmes mécatroniques à base d’observateurs embarqués pour la surveillance et le pilotage de Systèmes Automatisés à Structures Variables." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4326.
Повний текст джерелаThis thesis deals with the modeling, simulation and control of mechatronic systems. Symbolic computation software Maple was used to generate several models with different targets for diagnosis purposes, monitoring and driver assistance. These models based both on robotic and energetic approaches, highlight the properties and characteristics of the vehicle dynamics according to the trajectory and allow to achieve Fault , Detection and Isolation (FDI) development. This initial work led to mechatronics and energy analysis applied to All Terrain Vehicles (ATV). A dynamic spiting of the studied vehicle in several functional blocks was carried out. The evolution of the coupling terms was studied and defining a global energetic sub-division for the whole system. Within the framework of the ANR project, a 16 degrees of freedom (DOF) dynamic model was developed for a farm grape harvester (G7) and for C5 car. Dynamic parameters Identification using real data in driving simulation environment proposed by Oktal (SCANeR Studio). Regarding the robust observers development, the sliding mode theory was applied. The road profiles (slope, tilt,drift) are estimated with observers. The criterion of rollover has been tested on the dynamics of a Citroen C5 car and on the G7.240.In order to have an experimental demonstrator a device using the new Arduino technology containing a set of sensors has been developed. In a last part, the dynamic behaviour of an electric kart with the field-oriented control (FOC) of its electrical engine are given. With Matlab/Simulink software and Bond Graph, a simulator of the electrical Kart has been developed
Ghattassi, Mohamed. "Modélisation, observation et commande d’une classe d’équations aux dérivées partielles : application aux matériaux semi-transparents." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0123/document.
Повний текст джерелаThis thesis investigates the theoretical and numerical analysis of coupled radiative conductive heat transfer in a semi-transparent, gray and non-scattering 2D medium. This two heat transfer modes are described by the radiative transfer equation (RTE) and the nonlinear heat equation (NHE). We proved the existence and uniqueness of the solution of coupled systems with homogeneous Dirichlet boundary conditions using the fixed-point theorem. Moreover, we developed a useful algorithm to simulate the temperature in the medium. We used the quadrature $S_{N}$ for the angular discretization of the RTE. The spatial discretization of RTE was made by the discontinuous Galerkin method (DG) and the finite element method for the non-linear heat equation. We have shown the convergence and the stability of the coupled numerical scheme using the discrete fixed point. The discrète model obtained after an approximation allowed us to do the analysis and synthesis of state estimators and feedback control design for stabilization of the system. Thanks to the special structure of the model and using the Differential Mean Value Theorem (DMVT), we proposed a reduced order observer and we construct a gain matrix, which ensures the exponential stability of the proposed observer and guarantees the boundedness of the estimate vector. An extension to $\mathcal{H}_{\infty}$ filtering is also provided. We have extended the reduced order approach in the case of the observer-based controller and we proved the exponential stability under the control feedback law. Similarly, an extension to $\mathcal{H}_{\infty}$ filtering is also provided. The obtained results were validated through several numerical simulations
Al-Tahir, Ali Abdul Razzaq. "Synthèse d’observateur d'état et commande non-linéaire à retour de sortie des systèmes électriques." Caen, 2016. http://www.theses.fr/2016CAEN2070.
Повний текст джерелаThe research work developed in this thesis has been mainly devoted to the observation and sensorless control problems of electrical systems. Three major contributions have been carried out using the high - gain concept and output feedback adaptive nonlinear control for online UPS. In this thesis, we dealt with synthesis of sampled high - gain observers for nonlinear systems application to PMSMs and DFIGs. We particularly focus on two constraints: sampling effect and tracking unmeasured mechanical and magnetic state variables. The first contribution consists in a high gain observer design that performs a relatively accurate estimation of both mechanical and magnetic state variable using the available measurements on stator currents and voltages of PMSM. We propose a global exponential observer having state predictor for a class of nonlinear globally Lipschitz system. In second contribution, we proposed a novel non – standard HGO design for non-injective feedback relation application to variable speed DFIG based WPGS. Meanwhile, a reduced system model is analyzed, provided by observability test to check is it possible synthesis state observer for sensorless control. In last contribution, an adaptive observer for states and parameters estimation are designed for a class of state - affine systems application to output feedback adaptive nonlinear control of three-phase AC/DC boost power converter for online UPS systems. Basically, the problem focused on cascade nonlinear adaptive controller that is developed making use Lyapunov theory. The parameters uncertainties are processed by the practical control laws under backstepping design techniques with capacity of adaptation
Gonzalez, de Cossio Francisco. "Synthèse d’observateur robuste pour les systèmes non linéaires." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1273.
Повний текст джерелаEstimating the state of a nonlinear system is an essential task for achieving important objectives such as: process monitoring, identification and control. Observers are algorithms that estimate the current state by using, among other information, sensor measurements. The problem of observer design for nonlinear systems has been a major research topic in control for many decades. Recently, there has been an increasing interest in the design of observers for more realistic models, which can include disturbances, sensor nonlinearities and discrete outputs. This thesis concerns the design of robust observers for selected classes of nonlinear systems and we can distinguish three main parts. The first part studies state-affine systems affected by noise, and analyses the state estimation via the so-called high-gain Kalman filter. The convergence properties of this observer are strongly influenced by two variables: its tuning parameter and the properly excited system input. We present a new optimization algorithm, based on Lyapunov analyses, that adapts these variables in order to minimize the effect of both dynamic and output disturbances. The novelty of this approach is that it provides a systematic method of simultaneous tuning and input selection with the goal of improving state estimation in the face of disturbances, and that it avoids the use of trial-and-error based methods. The second part studies the problem of observer redesign for general nonlinear systems whose outputs are transformed by nonlinear functions. Indeed, a given observer might not estimate the system state properly if it does not take into account sensor nonlinearities and, therefore, such an output mismatch needs to be addressed. We present an observer redesign that consists in the interconnection of the original observer with an output estimator based on a dynamic inversion, and we show its asymptotic convergence via small-gain arguments. We illustrate our method with two important classes of systems: state-affine systems up to output injection and systems with additive triangular nonlinearity. Finally, the third part extends our redesign method to systems whose outputs are not only transformed but also discretized in time. This added assumption introduces important challenges; we now implement sample-and-hold techniques leading to an observer gain based on linear matrix inequalities. The main feature of our redesign methods is the possibility to adapt a large number of observers from the literature to more realistic scenarios. Indeed, classical sensors in engineering applications are often nonlinear or discrete, whereas a recurrent assumption in observer design is the linearity or continuity of the output
Granado, Ernesto. "Commande predictive a base de programmation semi definie." Phd thesis, INSA de Toulouse, 2004. http://tel.archives-ouvertes.fr/tel-00009241.
Повний текст джерелаGranado, Migliore Ernesto. "Commande prédictive à base de programmation semi définie." Toulouse, INSA, 2004. http://www.theses.fr/2004ISAT0006.
Повний текст джерелаThis work develops some approaches for the synthesis of partial information robust output feedback controllers in discrete time systems. In the framework of predictive control the synthesis follows the minimization, at each sampling time, of an upper bound for a quadratic cost associated with an infinite time horizon. The optimization problem which takes into account state and control constraints is described in terms of a semi definite programming one including linear matrix inequalities. Two general approaches are investigated: the first one is based on invariant ellipsoidal concept with dynamic output control, the second one makes use of an extended formulation where the initial output feedback control is translated in terms of extended state feedback control
Fadiga, Lamine. "Commande h∞ à base de modèles non entiers." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0090/document.
Повний текст джерелаThe general theme of the work enables to extend H∞ control methodology to fractional order models. Two approaches are proposed. The first one consists in rewriting the fractional order model as an uncertain integer order model in order to use existing H∞ control methods for integer order models. The second approach consists in developing specific LMI conditions for fractional order models based on their pseudo state space representation. These two approaches are applied to the vibratory isolation of a bridge
Faucher, Jérôme Maussion Pascal. "Les plans d'expériences pour le réglage de commandes à base de logique floue." Toulouse : INP Toulouse, 2006. http://ethesis.inp-toulouse.fr/archive/00000312.
Повний текст джерелаPassaquay, Dominique. "Modélisation et commande de processus multivariables à base de logique floue : application à la commande de moteurs thermiques." Toulouse, INSA, 2000. http://www.theses.fr/2000ISAT0022.
Повний текст джерелаLe, Vu Tuan Hieu. "Commande prédictive robuste par des techniques d'observateurs à base d'ensembles zonotopiques." Phd thesis, Supélec, 2012. http://tel.archives-ouvertes.fr/tel-00765444.
Повний текст джерелаGédouin, Pierre-Antoine. "Étude et commande d'actionneurs à base d'alliages à mémoire de forme." Brest, 2010. http://www.theses.fr/2010BRES2066.
Повний текст джерелаShape memory alloys (SMA5), with their original macroscopic properties, open new possibilities regarding the development of actuators. Indeed, these materials are able to be deformed of the order of 6 to 7 %, and can recover their original shape by a simple variation of their temperature. This property make them suitable to be use as active elements in actuators. Besides, they are increasingly employed in different areas of industry such as aerospace, automotive, biomedical, robotics, etc. But their nonlinear behavior with hysteresis complicates the study and the control of mechanisms based on these new alloys. In this thesis, vie propose, on the one hand, a simplified model of the behavior of SMA springs based on experimental observations. The objective is to quickly size an actuator composed of this structure, to simulate its behavior in closed loop or to use in a control algorithm. On the other hand, we are interested in model4ree control. First by a theoretical study (stability, tunning) and then in a practical way, showing its good performances in the field of SMA actuators
Szulman, Sylvie. "Enrichissement d'une base de connaissances à partir de textes en langage naturel." Paris 13, 1990. http://www.theses.fr/1990PA132020.
Повний текст джерелаMIGGE, JORN. "L'ordonnancement sous contraintes temps-reel : un modele a base de trajectoires." Nice, 1999. http://www.theses.fr/1999NICE5341.
Повний текст джерелаMamboundou, Jerry. "Commande prédictive à base d'état adaptive indirecte supervisée par la logique floue." Rouen, 2013. http://www.theses.fr/2013ROUES036.
Повний текст джерелаThe works presented in this dissertation are intended to maintain a control loop performance when the system to be controlled is linear and time-varying parameters. To do this, we suggest a discrete predictive control under inequality constraints, state modelbased, indirect adaptive which supervisor uses fuzzy logic. The parameters adjustment of the internal model is based on the recursive least-squares method. The intrinsic parameters adaptation of predictive controller (horizons of prediction, control and weighting of the control signal) is performed by the fuzzy logic supervisor on the basis of desired and real performances. Thus the analysis of control loops formed has established conditions of stability bounded input - bounded output. Finally the Hessian’s conditioning has been improved by introducing a dynamic exponential weighting in the cost function of predictive control. The proposed strategy has been applied in simulation to control different systems
Aouchiche, Nedjma. "Conception d’une commande MPPT optimale à base d’intelligence artificielle d’un système photovoltaïque." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCA001.
Повний текст джерелаThe grid connected the photovoltaic system performance is strongly affected by the environmental conditions that undergoes, such as random atmospheric variations.This thesis work aims to improve the DC / DC converter and the PV inverter controllers’ performance against brutal climatic fluctuations. Therefore, the first part of this thesis is devoted to the comparative study between the following maximum power point tracking algorithms (MPPT): (i) the algorithm of the Incremental of Conductance (IC), (ii) Fuzzy Logic (FL) and (iii) Particle Swarm Optimization algorithm (PSO). These algorithms are tested under various atmospheric conditions such as partial shading and evaluated in terms of efficiency, stability, speed and robustness. According to the simulation results, PSO is superior than IC and FL, especially during partial shading.The second part of this thesis deals with improving the efficiency of the DC / AC control system which includes an internal DC link voltage control loop (VDC) and an external control loop for direct current regulation and in quadrature (Id, Iq) provided by the PLL. Each of these two loops includes a PI controller whose gains are optimized using meta-heuristic techniques to improve the dynamic performance of the three-phase PV system connected to the network. Therefore, a comparative study is carried out for proposed meta-heuristics techniques such as: (i) whale optimization algorithm (WOA), (ii) gray wolf optimization algorithm (GWO) (iii) the Ant-Lion Optimization algorithm (ALO) and (iv) of the Moth-Flame Optimization algorithm (MFO). The results obtained, via MatlabTM-Simulink, reveal that the proposed WOA technique performance is relevant than the other studied techniques in terms of efficiency, robustness and stability which optimizes the PI controllers gains in order to obtain the best power factor and THD values
Faucher, Jérôme. "Les plans d'expériences pour le réglage de commandes à base de logique floue." Phd thesis, Toulouse, INPT, 2006. http://oatao.univ-toulouse.fr/7467/1/faucher.pdf.
Повний текст джерелаLecomte, Catherine. "Un système à base de règles d'aide à l'ordonnancement d'un atelier travaillant à la commande." Châtenay-Malabry, Ecole centrale de Paris, 1993. http://www.theses.fr/1993ECAP0319.
Повний текст джерелаNaouar, Mohamed Wissem. "Commande numérique à base de composants FPGA d’une machine synchrone : Algorithmes de contrôle du courant." Cergy-Pontoise, 2007. http://biblioweb.u-cergy.fr/theses/07CERG0344.pdf.
Повний текст джерелаThe aim of this work is to present the interest of using hardware solutions such as FPGAs for the digital implementation of control algorithms of electrical machines. For this reason, a methodical approach based on an appropriate design methodology is firstly presented and discussed. This design methodology allowed the realization of a specific library, composed of reusable hardware architectures, which is dedicated to the control of electrical machines. It also allowed the FPGA implementation of several current control algorithms of a synchronous machine. The implemented current control techniques are: ON/OFF current controllers ; Predictive current controllers ; PI current controllers ; Sliding mode current controllers. The operating mode corresponding to each one of the designed hardware architectures is studied and presented throughout this memory. The contribution and the benefits of FPGA components in the control of electrical machines are also analyzed and discussed
Naouar, Mohamed Wissem Monmasson Eric. "Commande numérique à base de composants FPGA d'une machine synchrone : Algorithmes de contrôle du courant." [S.l.] : [s.n.], 2008. http://biblioweb.u-cergy.fr/theses/07CERG0344.pdf.
Повний текст джерелаArnold, Jean-François. "Proposition d’une stratégie de contrôle à base de logique floue pour la commande d’un circuit d’air d’un moteur Diesel." Rouen, 2007. http://www.theses.fr/2007ROUES004.
Повний текст джерелаThe evolution of the anti-pollution standards has led car manufacturers to insert innovative actuators in the air system of diesel engines. In addition to the throttle, engines are now systematically equipped with exhaust gas recirculation valve and variable geometry turbine. These actuators have increased the difficulty to manage the intake manifold pressure and the air flow simultaneously. The strategies currently proposed in the literature do not seem to satisfy correctly all constraints imposed by large-scale production : engine parametric disparity, limited control-unit power, available sensor set, etc. In this context a new strategy based on fuzzy control is proposed. Its first interest is the lack of internal model. In order to test this strategy, a mean-value model of diesel engine was developed and validated experimentally. Using this model, the behaviour of a given diesel engine has been simulated during the Standard Euro Cycle. The simulation results show that the approach proposed is more efficient than strategies currently embedded in cars. Moreover, it is particularly robust in stability and easy to tune regarding the parameters considered. The implementation of the fuzzy controller in an electronic control unit has shown that the proposed strategy can operate in real-time
Olive, Xavier. "Approche intégrée à base de modèles pour le diagnostic hors ligne et la conception : application au domaine de l'automobile." Toulouse 3, 2003. http://www.theses.fr/2003TOU30255.
Повний текст джерелаBennani, Mohammed. "Un superviseur à base de connaissances en synthèse d'asservissement : SuBaCoSyAs." Lille 1, 1990. http://www.theses.fr/1990LIL10129.
Повний текст джерелаLimal, Steve. "Architectures de contrôle-commande redondantes à base d'Ethernet Industriel : modélisation et validation par model-checking temporisé." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2009. http://tel.archives-ouvertes.fr/tel-00468531.
Повний текст джерелаLimal, Steve. "Architectures de contrôle-commande redondantes à base d’Ethernet Industriel : modélisation et validation par model-checking temporisé." Cachan, Ecole normale supérieure, 2009. http://tel.archives-ouvertes.fr/tel-00468531/fr/.
Повний текст джерелаThis work deals with an Ethernet based protocol that specifies redundancy mechanisms. The objective is to check the specification respect to availability properties. The industrial context of this work led us to : 1) give priority to a formal method. Temporal model-checking has been selected. Indeed the protocol must be used in critical industrial control systems. Therefore a thorough verification is necessary. The protocol description depends on many temporal parameters. Consequently, a technique taking time into account has been preferred. 2) put forward a method to instantiate our model. This timed automata based model has been designed to be modular. Thus the modelling of any network architecture is possible without requiring any modelling skills from the engineer. 3) put forward abstractions in order to improve the model-checking time and memory consumption. Checked properties describe the redundancy mechanisms capability to keep communications working event in case of medium or end device failure. In order to illustrate the relevance of our proposals, we apply the method of instantiation to two types of network architecture. Then some experiments are conducted and studied
Bouffard, Landry Daniel. "Algorithme novateur de contrôle d'un miroir déformable à base de ferrofluide." Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29383/29383.pdf.
Повний текст джерелаSamaan, Mazen. "Synthese et supervision des lois de commande adaptative." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0103.
Повний текст джерелаPLANAS, THIERRY. "Etude d'un generateur de rayons x base sur un convertisseur a resonance et de sa commande optimale." Paris 11, 1998. http://www.theses.fr/1998PA112152.
Повний текст джерелаBensmaine, Fayçal. "Modélisation et commande d'un système de stockage d'énergie à base de supercondensateur pour l'hybridation des groupes électrogènes." Thesis, Poitiers, 2014. http://www.theses.fr/2014POIT2341.
Повний текст джерелаThe research in this thesis are part of study and control of a new concept of hybrid generator to reduce the power of the diesel engine (downsizing) in order to save fuel and improve the behavior of the synchronous generator during transients. The adopted solution is to place in parallel with the synchronous generator an energy storage system. The latter consists of an inverter with a super capacitor on the DC bus. The aim of the thesis was to scale the entire supercapacitor / static converter and to develop a control law having the best performance with the best compromise between the energy exchanged in the supercapacitor, efficiency, the group speed and voltage amplitude of the generator. A feedback control condition with integration of the deviation using LMI's approach has been established for the synthesis of loop current regulators from the inverter.A second control law was developed to regulate the variable voltage across the supercapacitor. A simulator combining generator and storage system has been developed to test these commands.All validations were made on an experimental test rig specifically developed for this thesis. The tests were conducted with an electric drive motor in the test platform of the LIAS and with a diesel in that of the Leroy Somer Motors company.Finally, experimental tests have highlighted the significant contribution of this hybridization on the diesel speed variationsand on the terminal voltage of the alternator during impact or load shedding
Barcikowski, Mathieu. "Vers une évaluation de la robustesse des connaissances au sein d’une base de connaissances." Lyon 1, 2006. http://www.theses.fr/2006LYO10233.
Повний текст джерелаTechnical knowledge is difficult to formalize and is dynamic because of evolution of techniques and technologies. Validation and verification of knowledge are not enough. To be exploitable, they must be able to resist the evolutions of the environment. We propose to qualify this resistance under the more general concept of knowledge robustness. Knowledge robustness, represented by the temporal robustness and contextual robustness, is defined by a set of indicators of robustness. These indicators are evaluated thanks to the analysis of the activity of the systems exploiting knowledge represented in the form of a knowledge base. KROeVET is a tool for evaluation and visualization of knowledge robustness
Kada, Belkacem. "Contribution à l'identification et l'identification en ligne en vue de la base de la commande automatique en temps réel des systèmes complexes." Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/23687/23687.pdf.
Повний текст джерелаPham, Thanh Hung. "Commande optimale sous contraintes pour micro-réseaux en courant continu." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT086/document.
Повний текст джерелаThe goals of this thesis is to propose modelling and control solutions for the optimal energy management of a DC microgrid under constraints. The studied microgrid system includes electrical storage units (e.g., batteries, supercapacitors), renewable sources (e.g., solar panels) and loads (e.g., an electro-mechanical elevator system). These interconnected components are linked to a three phase electrical grid through a DC bus and associated DC/AC converters. The optimal energy management is usually formulated as an optimal control problem which takes into account the system dynamics, cost, constraints and reference profiles.An optimal energy management for the microgrid is challenging with respect to classical control theories. Needless to say, a DC microgrid is a complex system due to its heterogeneity, distributed nature (both spatial and in sampling time), nonlinearity of dynamics, multi-physic characteristics, the presence of constraints and uncertainties. Moreover, the power-preserving structure and the energy conservation of a microgrid are essential for ensuring a reliable operation.This challenges are tackled through the combined use of port-Hamiltonian formulations, differential flatness, and economic Model Predictive Control.The Port-Hamiltonian formalism allows to explicitly describe the power-preserving structure and the energy conservation of the microgrid and to connect different components of different physical natures through the same formalism. The strongly non-linear system is then translated into a flat representation. Taking into account differential flatness properties, reference profiles are generated such that the dissipated energy and various physical constraints are taken into account. Lastly, we minimize the purchasing/selling electricity cost within the microgrid using the economic Model Predictive Control with the Port-Hamiltonian formalism on graphs.The proposed control designs are validated through simulation results
Koubeissi, Majed. "Etude d'antennes multifaisceaux à base d'une nouvelle topologie de matrice de Butler : conception du dispositif de commande associé." Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/bfa68fd6-9a72-4642-9768-05bc56f6abca/blobholder:0/2007LIMO4040.pdf.
Повний текст джерелаThis Ph. D thesis focuses on the new multibeam antennas development, based on a Butler matrix, for the broadband access systems. A new procedure to design a Butler matrix which aims to produce a broadside beam using 90° hybrids only is proposed. Its interest is well in the stretching zones coverage. The realization of a prototype at 12 GHz validates the novel developed topology procedure. A new switched beam antenna in the azimuthal plane with cosecant squared shaped beam in the elevation plane was designed and fabricated with a microstrip technology. This antenna was designed for LMDS (Local Multipoint Distribution Service) applications at 42 GHz, within the BROADWAN European project framework and in partnership with THALES Communications. Thus, this solution is optimal since it gets rid of the shadowing zones. Finally, a PIN diode switching device (SP3T) was designed on the same antenna substrate. The goal is to build a first integrated system made up of a multibeam antenna and a switch. The switch realization was fabricated at 12 GHz and the measures come to validate the design procedure
Tabart, Quentin. "Modélisation et commande d'une interface à base d'un convertisseur NPC pour système de stockage hybride dédié micro-réseau." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT076.
Повний текст джерелаThe increasing rise of distributed generation integration in the energy mix is a challenging issue. Indeed distributed generation based on renewable energy sources like solar and wind creates fluctuation of the grid’s parameter and can lead to minor issues like harmonics, over or under voltages, flicker and so on, or to major failure like blackouts. The concept of microgrid associated with energy storage systems is seen as a potential solution to increase renewable energy integration to the grid, while increasing efficiency and reliability at the same time.A review of energy Storage technologies is carried out and it results that currently none of these technologies can offer energy and power capabilities while fast response and efficiency at the same time. The use of Hybrid Energy Storage System allows to reach such performance. For this thesis, a Li-Ion and a Vanadium Redox Flow Battery have been selected for their good power and energy abilities respectively, and their high round trip efficiency.The main contribution of this work lies in the structural limits analysis of the topology and the control algorithm for the four leg three level NPC used as a multipurpose interface between a Renewable Energy Source, a Hybrid Energy Storage System and a Microgrid. The effectiveness of the proposed algorithms and limits model are tested both in simulation and experiments. Ancillary services like frequency and voltage support are then developed and tested in simulation under various conditions
Teodorescu, Catalin Stefan. "Commande de systèmes d'isolation antisismique mixte." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00904280.
Повний текст джерелаKoussoube, Souleymane. "Le raisonnement temporel dans les systèmes à base de connaissance : aide à la conduite de la réanimation." Toulouse 3, 1992. http://www.theses.fr/1992TOU30192.
Повний текст джерелаMaamouri, Rebah. "Diagnostic et commande tolérante aux défauts appliqués à un système de conversion électromécanique à base d’une machine asynchrone triphasée." Thesis, Ecole centrale de Marseille, 2017. http://www.theses.fr/2017ECDM0009/document.
Повний текст джерелаThe main goal of this thesis is to propose diagnostic strategies in the case of a sensorless speed control of a three-phase induction motor under an opened-switch or opened-phase fault. A qualitative analysis of the performances, in terms of stability and robustness, of sensorless control applied to the electrical drive in pre-fault and post-fault operation modes is presented. A model-based sliding mode observer is developed and experimentally validated for sensorless speed control of three-phase induction motor. The signals issued from the observer (model approach) as well as the measured ones (signal approach) are simultaneously used to form a hybrid approach for inverter open-switch fault detection and identification. A second-order sliding mode observer based on Super-Twisting algorithm (STA) is also developed to improve the stability and to ensure the continuity of operation of the electrical drive especially during transient states induced by the fault, permitting thus to apply the reconfiguration step without losing the control
Castang, Fabien. "Synthèse robuste de filtres de diagnostic pour la surveillance à base de modèle des systèmes multivariables et incertains." Bordeaux 1, 2003. http://www.theses.fr/2003BOR12652.
Повний текст джерелаThe work presented in this dissertation is focused on the design of robust Fault Detection and Isolation (FDI) filters for multivariable uncertain systems. We show how the proposed methodology can be extended to the case of feedback systems. First, an iterative scheme is presented to design a robust detection filter. The design procedure is based on robust HÆ estimation techniques and generalised structured singular values (mg). Second, a new and general scheme is presented to design robust FDI filters. The design procedure ensures simultaneously robustness of the FDI output against disturbances and modelling errors, and nominal sensitivity to faults. Robust sensitivity of the residual signals is analysed by means of a test based on the generalised structured singular value. The feedback controller is directly included in the design procedure. These approaches are validated in simulation, on a hydraulic process of laboratory and flight simulator
El, Harabi Rafika. "Supervision des processus chimiques à base de modèles Bond Graphs." Thesis, Lille 1, 2011. http://www.theses.fr/2011LIL10074/document.
Повний текст джерелаThe proposed Ph.D. thesis deals with integrated design of bond graph model based for health monitoring of chemical processes. This research work is performed within the framework of the topic “Bond graphs for supervision of energetic processes" developed between the University of Gabés (Tunisia) and “Polytech’Lille”, the Engineering School within the University of Science and Technology of Lille. The chemical processes are polluting processes and with risk. They need, for staff safety and environmental protection, online surveillance for early detection and the identification of the failures. chemical processes occur phenomena of various nature: chemical and or biochemical, thermo-fluidic… Their modeling requires a unified approach. The Bond graph as a multidisciplinary tool is well suited to this task.Furthermore, this tool can be used also for the design of diagnosis algorithms thanks to its behavioral, causal and structural properties, and allows providing structural diagnosability conditions of the pertinent equipment without numerical calculation. The main scientific contributions of this research can be summarized as follows: (i)elaboration of a data base of dynamic bond graph models of components and chemical phenomena, (ii) methodology of bond graph model based diagnosis for systematic generation of fault indicators sensitive to the appearance of the secondary reactions source of pollution and explosion, (iii) robust diagnosis based on coupled uncertain bond graph model, (iv) computerization of the diagnosability analysis procedures applied to a class of a chemical process, (v) application to a real process (installation of esterification)
LACROSE, Véronique. "Réduction de la complexité des contrôleurs flous : applications à la commande multivariable." Phd thesis, INSA de Toulouse, 1997. http://tel.archives-ouvertes.fr/tel-00010030.
Повний текст джерелаLesueur, Sébastien. "Algorithmes à base de réseaux de neurones pour la commande de systèmes dynamiques non linéaires et leurs modèles d'intégration sur silicium /." Trois-Rivières : Université du Québec à Trois-Rivières, 2004. http://www.uqtr.ca/biblio/notice/resume/24044620R.pdf.
Повний текст джерелаGeffard, Franck. "Etude et conception de la commande en effort d'un telemanipulateur equipe d'un capteur d'efforts a sa base et a son extremite." Nantes, 2000. http://www.theses.fr/2000NANT2105.
Повний текст джерелаBouaouiche, Toufik. "Commande à structure variable et étude de l'intégration d'éolienne à base de machine asynchrone à double alimentation sur le réseau électrique." Nantes, 2007. http://www.theses.fr/2007NANT2041.
Повний текст джерелаThis thesis deals with a 7. 5 kW variable wind speed turbine with doubly-fed induction generator (DFIG). The goal is to design a robust control for the DFIG and minimise the impact of grid faults, unbalanced voltages or current harmonics on the performances of the system. After a brief historic of the evolution of wind turbines, the state of the art of used generators and their associated power electronics is presented. For mechanical part, a variable blade pitch wind turbine is used for maximal power extraction. The second part depicts the model of variable speed constant frequency DFIG using back-to-back PWM voltage source converters and the corresponding control schemes. The feasibility and advantages of soft synchronizing DFIG to the grid using stator voltage control method is discussed. The rotor side converter is used to control the wind turbine output power in order to follow a predefined power-speed tracking characteristics (MPPT) and the voltage (or reactive power) at the grid terminals. Both linear or non-linear control structures based respectively on PI regulator or variable structure control (sliding mode) are developed and compared. Some experimental results are shown to validate simulation study. The last part of this work is devoted to the integration of the wind turbine based on DFIG to the distribution network. In particular the behavior of the system under unbalanced power transmission grids, current harmonics or short circuit faults conditions is studied. A new active control strategy based on sliding mode regulators is developed to compensate electrical perturbations, improve power quality and assure the possibility of stabilizing and continuous mode function
Lesueur, Sébastien. "Algorithmes à base de réseaux de neurones pour la commande de systèmes dynamiques non linéaires et leurs modèles d'intégration sur silicium." Thèse, Université du Québec à Trois-Rivières, 2004. http://depot-e.uqtr.ca/1164/1/000122007.pdf.
Повний текст джерелаAhmed, Mariam Samir. "Optimisation de contrôle commande des systèmes de génération d'électricité à cycle de relaxation." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT019/document.
Повний текст джерелаOne of our current major challenges is decarbonizing the electric grid by eliminating fuel based electricity generators, and replacing them preferably by nature-friendly publicly accepted resources. That is where renewable energy resources raise as a promising solution. Power relaxation-cycle systems represent an interesting and particular class of renewable. Such a system needs to regain periodically a state that allows energy production. Hence, it has two phases: A generation during which the system is working in its "power" region and is able to generate power and a recovery phase that starts when the system reaches its power region boundaries and resets the system's state to start a new generation phase, which results in power consumption. The main focus of this PhD dissertation is the kite-based traction system, named thereafter the kite generator system (KGS), which emerged as an important class of renewable energy systems that uses relaxation phases. It is a solution proposed to extract energy from the steady and strong wind found in high altitudes. Its operation principle is to mechanically drive a ground-based electric generator using one or several tethered kites. The problematic is divided into two objectives: 1 - Optimization and control of the relaxation cycle to maximize the system's average produced power. Two control strategies are proposed for this purpose: A nonlinear model predictive control (NMPC) based and virtual constraints control (VCC) based one. 2 - Integration of the system on the electric grid or employing it to supply an isolated load. These problems are addressed in this thesis, realized in Grenoble Electrical Engineering laboratory (G2ELab) with collaboration with Grenoble Image Parole Signal Automatique laboratory (GIPSA-Lab)
Ben, Chabane Sofiane. "Techniques de détection de défauts à base d’estimation d’état ensembliste pour systèmes incertains." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLC007/document.
Повний текст джерелаThis thesis proposes a new Fault Detection approach for linear systems with interval uncertainties, bounded perturbations and bounded measurement noises. In this context, the Fault Detection is based on a set-membership state estimation of the system. The main contributions of this thesis are divided into three parts:- The first part proposes an improved method which combines the good accuracy of the zonotopic set-membership state estimation and the reduced complexity of the ellipsoidal set-membership estimation.- In the second part, a new ellipsoidal state estimation approach based on the minimization of the ellipsoidal radius is developed, leading to Linear Matrix Inequality optimization problems. In this context, both multivariable linear time-invariant systems and linear time-variant systems are considered. An extension of these approaches to systems with interval uncertainties is also proposed. - In the continuity of the previous approaches, two Fault Detection techniques have been proposed in the third part based on these set-membership estimation techniques. The first technique allows to detect sensor faults by checking the consistency between the model and the measurements. The second technique is based on Multiple Models. It deals with actuator/component/sensor faults in the same time. A Min-Max Model Predictive Control is developed in order to find the optimal control and the best model to use for the system in spite of the presence of these faults
Beltran, Brice. "Contribution à la Commande Robuste des Eoliennes à Base de Génératrices Asynchrones Double Alimentation : Du Mode Glissant Classique au Mode Glissant d'Ordre Supérieur." Phd thesis, Université de Bretagne occidentale - Brest, 2010. http://tel.archives-ouvertes.fr/tel-00598805.
Повний текст джерелаChaoui, Hicham. "Conception et comparaison de lois de commande adaptative à base de réseaux de neurones pour une articulation flexible avec non-linéarité dure /." Trois-Rivières : Université du Québec à Trois-Rivières, 2002. http://www.uqtr.ca/biblio/notice/resume/03-2246372R.html.
Повний текст джерелаAboulshamat, Orfan. "Algorithme de commande adaptative par mode de glissement à base de réseaux de neurones pour une articulation flexible avec non-linéarité dure /." Trois-Rivières : Université du Québec à Trois-Rivières, 2003. http://www.uqtr.ca/biblio/notice/resume/17613313R.html.
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