Tesi sul tema "Commande non linéaire – Logique floue"
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Aceves, Lopez Alejandro. "Nouvelle approche de la commande non linéaire sous contraintes à partir de la logique floue : le contrôleur logique naturel". Toulouse 3, 2000. http://www.theses.fr/2000TOU30139.
Testo completoGherari, Zineddine. "Stratégie de commandes neurofloues pour un système continu non linéaire". Paris 12, 1998. http://www.theses.fr/1998PA120062.
Testo completoHussain, Ayman. "Contribution à la commande adaptative robuste par modes glissants". Reims, 2008. http://theses.univ-reims.fr/exl-doc/GED00000994.pdf.
Testo completoThis thesis aims to develop a family of adaptive robust sliding modes for a large class of non-linear uncertain and disturbed. Two control laws were developed. In the first, the model system has been reformed such that all the unknown dynamics are combined in one function and then use a single approximation. In this context, fuzzy wavelet networks were first used thanks to their rapid convergence but they don’t give good results in the presence of uncertain linguistic information. To resolve this, a fuzzy system of type-2 was used. To ensure robustness against external disturbances, uncertainty and approximation errors, the sliding mode has been proposed. To reduce the stresses at the start of the signal, a non-linear was introduced. The control law is built to ensure the robustness and overall stability of the closed system in addition to it’s capacity of eliminating the phenomenon of chattering in the case of classical sliding mode. However, the choice of the gains of the sliding surface becomes complicated for systems of order greater than 2. To overcome this problem, a new control law using sliding mode has been proposed. The main advantage of this approach is that the sliding surface has been modified so that the approach has been removed which makes the system more robust and increases its speed of convergence to the reference signal. .
Passaquay, 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.
Testo completoManceur, Malik. "Commande robuste des systèmes non linéaires complexes". Thesis, Reims, 2012. http://www.theses.fr/2012REIMS003/document.
Testo completoThis work deals with a fuzzy tracking control design for uncertain nonlinear dynamic system withexternal disturbances and using a TS (Takagi-Sugeno) fuzzy model description. The control is basedon the Super-Twisting algorithm, which is among of second order sliding mode control. Moreover, twoadaptive fuzzy type-2 systems have been introduced to generate the two Super-Twisting signals toavoid both the chattering and the constraint on the knowledge of disturbances and uncertainties upperbounds. These adaptive fuzzy type-2 systems has only one input : the sliding surface, and one output :the optimale values of the control gains, which are hard to compute with the original algorithm.Simulation results are obtained in order to compare the performances of the proposed method tothat given by Levant. Then, we have introduced the integral sliding mode concept to impose inadvance the convergence time and the arrival on the sliding surface. The proposed approaches aregeneralized to the case of multivariable systems. Several results in simulation and in real time usinga benchmark are obtained to validate and to confirm the performances of our contributions
Raymond, Christophe. "Commande floue monovariable et multivariable selon l'expertise et par modélisation floue (méthodologie et application aux systèmes automobiles)". Phd thesis, INSA de Toulouse, 1995. http://tel.archives-ouvertes.fr/tel-00144055.
Testo completoMansouri, Badr. "Contribution à la synthèse de lois de commandes en poursuite de trajectoire pour les systèmes flous de type Takagi Sugeno incertains". Reims, 2005. http://theses.univ-reims.fr/exl-doc/GED00000426.pdf.
Testo completoThis work deals with a fuzzy tracking control design for uncertain nonlinear dynamic system with external disturbances and using a TS (Takagi-Sugeno) fuzzy model description. In this case, a recurring problem is related to the LMI (Linear Matrix Inequality) formulation. In this way, we have synthesised a robust control law for TS fuzzy perturbed systems an uncertain perturbed systems based on H¥ performances. To specify the desired trajectory and consequently to ensure the tracking trajectory, we have used a reference model. The cases with and without fuzzy observers are either treated. The obtained results are presented in two approaches, BMI (Bilinear Matrix Inquality) and LMI one. This last approach shows the effectiveness of the numerical exploitation of the results. A second approach was also developed and relates to the same problem and based on a suboptimal control. The results in this case are also reformulated directly in LMI's terms
Tillet, Joris. "Safe localization and control of a towed sensor". Thesis, Brest, École nationale supérieure de techniques avancées Bretagne, 2021. http://www.theses.fr/2021ENTA0013.
Testo completoThe oceans’ exploration becomes more and more reachable, especially thanks to robotics progress. Applications for underwater robots are plentiful. In this thesis, we particularly focus on the search of wrecks, as the Cordelière, which sank in the Bay of Brest (France) in 1512. The proposed robotic system consists of towing a magnetometer likely to detect the ferromagnetic materials of the wreck. The sensor cannot be directly embedded because it is sensitive to the perturbations from the robot. This is why it is deported. Two issues are studied to approach this system. The first one is linked to the control of the magnetometer’s position, whereas we can only act on the towing robot. A feedback linearization method is used to design a controller. Then, this controller is validated under some state constraints by using tools from interval analysis. The second issue relates to underwater localization in a reliable manner. Ways to approach uncertainties and outliers gathered by acoustic sensors are studied. The interval analysis allows to obtain first results, and the fuzzy logic completes the approach by giving more suppleness in the prioritization of the constraints. Finally, some expérimentations are presented with different robots, and especially the localization of a ROV in a pool
Bezzaoucha, Souad. "Commande tolérante aux défauts de systèmes non linéaires représentés par des modèles de Takagi-Sugeno". Phd thesis, Université de Lorraine, 2013. http://tel.archives-ouvertes.fr/tel-00948345.
Testo completoGateau, Guillaume. "Contribution à la commande des convertisseurs statiques multicellulaires série : commande non linéaire et commande floue". Toulouse, INPT, 1997. http://www.theses.fr/1997INPT100H.
Testo completoThis work deals with multicells converters control. This new static power converter structure appeared at the end of the 90's and has many interesting advantages for high voltage energy conversion. But the perfect dynamic control of the internal variables is an important objective for industrials applications. The first part of this work will be devoted to the study of the multicell structure, with its high interest in energy conversion. An average state space model of the system is given. Different classical non linear control lows are presented in the second part, in order to fit some specific dynamic requirements, very particular to this type of power converter. Thus two methods based on the input / output linearization and on the Lyapunov functions are implemented and tested. Moreover, an original estimator for the different voltages is proposed. In the third part, two differents types of Fuzzy Control of multicells converter are proposed. The first one is based on the average model and leads to classical structure and performances. The second allows the control of the converter through phase shifts variations between the differents trigger signals, but requires a fuzzy inversion of the harmonic model. Simulations results are provided for all the differents control laws on 3 or 4 cells converters. Most of them were implemented and tested through experiments
Mamboundou, Jerry. "Commande prédictive à base d'état adaptive indirecte supervisée par la logique floue". Rouen, 2013. http://www.theses.fr/2013ROUES036.
Testo completoThe 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
Ouattara, Seydou. "Mise en œuvre d'une loi de commande adaptative floue indirecte". Valenciennes, 1996. https://ged.uphf.fr/nuxeo/site/esupversions/34633a72-0657-4c61-8628-c72bea21021e.
Testo completoKhoder, Wassim. "Contribution à la navigation inertielle par filtrage non linéaire et approche floue". Littoral, 2010. http://www.theses.fr/2010DUNK0279.
Testo completoThe works presented in this thesis deals with the problems of the inertial navigation by nonlinear filtering and fuzzy approach. The aim of this thesis is to propose an INS/GPS/MAG hybridization algorithms. Two contributions were carried out having the same aim : firstly, the development of a new hybridization algorithm for inertial navigation, denoted Q-SUKF and secondly, the INS/GPS/MAG hybridization in unfavourable scenarios (multipath and GPS signals outages). Q-SUKF Filter combines the scaled unscented Kalman filter (SUKF) using properties of rotation and unicity of quaternions (Q) to represent the attitude. We showed through the experimental results that the proposed Q-SUKF filter is well adapted to recursively estimate the states of navigation using external sensors which are complementary and/or redundant. The advantage of our filter is the easy treatment of data fusion a well as the resolving of sensors latency times problems. In case of potential failure of GPS, Q-SUKF filter does not give satisfactory navigation results. To solve this problem, a filter, denoted (A)(FL)Q-SUKF, was proposed. This filter is based on Q-SUKF filter and on a Takagi-Sugeno fuzzy model. During the phases where GPS measurements are reliable, this filter can learn the best parameter estimates of the Takagi-Sugeno fuzzy model. When GPS outages, the fuzzy model provides simulated measures of position and velocity to allow the Q-SUKF filter to continue errors correction of navigation parameter estimates. These two filters are then tested for different simulated trajectories and statistics for results are presented and used to assess the contribution of these techniques in terms or result navigation
Hussain, Ayman Zaytoon Janan Hamzaoui Abdelaziz. "Contribution à la commande adaptative robuste par modes glissants". Reims : S.C.D. de l'Université, 2008. http://scdurca.univ-reims.fr/exl-doc/GED00000994.pdf.
Testo completoBoukezzoula, Reda. "Commande floue d'une classe de systèmes non linéaires : application au problème de suivi de trajectoire". Chambéry, 2000. http://www.theses.fr/2000CHAMS006.
Testo completoRuiz-Sanchez, Francisco José. "Stabilité de systèmes bouclés par des contrôleurs flous du type Proportionnel-Dérivé et Proportionnel-Intégral". Compiègne, 1997. http://www.theses.fr/1997COMP1087.
Testo completoHihi, Jalil. "Évaluation de méthodes d'identification de systèmes non-linéaires en régime permanent : méthode de traitement des données par groupes, identification floue". Nancy 1, 1993. http://www.theses.fr/1993NAN10013.
Testo completoTrabelsi, Amine. "Contribution à l'analyse et à la commande avancée des systèmes multivariables". Toulon, 2006. http://www.theses.fr/2006TOUL0012.
Testo completoThis thesis treats the modeling and the adaptive optimal control of complex systems using the concepts of the fuzzy logic and the neural networks. The accent is put on the class of the dynamic, nonlinear, stochastic and multivariables systems. In this context, we proposed a modeling method of these systems based on the fuzzy clusterine technique. In fact, from an available data base of the system to study, a global fuzzy control model, formed by the weighted set of fuzzy local linear models of Takagi-Sugeno type, is established. The fuzzy model parameters are then adapted by the recursive (east squares algorithm with forgetting factor. The proposed control method is of optimal type by quadratic criteria. It Is based on a neuronal simulation model and a fuzzy Taftagi-Sugeno control moxtel. The resulting error between the outputs of these two models will serve to adapt the fuzzy model's parameters, and therefore the controller's parameters. This method has been applied with success for the control of the air temperature and the humidity inside of an agricultural greenhouse
Pagès, Olivier. "Etude et comparaison de différentes structures de commande multi-contrôleurs : application à un axe robotisé". Chambéry, 2001. http://www.theses.fr/2001CHAMS011.
Testo completoBouarar, Tahar. "Contribution à la synthèse de lois de commande pour les descripteurs de type Takagi-Sugeno incertains et perturbés". Reims, 2009. http://theses.univ-reims.fr/sciences/2009REIMS035.pdf.
Testo completoThis works deals with the stabilization of uncertain and/or disturbed nonlinear systems represented by fuzzy Takagi-Sugeno models. First, some results based on a quadratic candidate Lyapunov function have been proposed in terms of LMIs (Linear Matrix Inequalities) and theconservatism of such approaches has been discussed. To reduce the conservatism, new approaches based on a non quadratic Lyapunov function and non PDC (Parallel Distributed Compensation) control law have been proposed. Then, one other source of conservatism has been studied. Indeed, the classical way to express the closed-loop dynamic leads to introduce crossing-terms in the set of LMIs to be solved. Therefore, to overcome this source of conservatism, the descriptor redundancy propriety has been used to rewrite the closed-loop dynamic. This allows decoupling the system matrices from those of state feedback gain matrices. Furthermore, the redundancy propriety has been employed to cope with the wellknown and difficult problems in terms of LMI formulation relating to the robust static and dynamic output feedback controller design for uncertain and / or disturbed Takagi-Sugeno systems
Nabhen, Ricardo Cassiano. "Fuzzy logic based method for modeling queue behavior of network nodes". Paris 6, 2009. http://www.theses.fr/2009PA066203.
Testo completoKhiar, Djamel. "Modélisation et commande d'un moteur thermique à allumage commandé". Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2007. http://tel.archives-ouvertes.fr/tel-00156791.
Testo completod'essence des moteurs thermiques à allumage commandé avec ou sans suralimentation en air.
La présentation se décompose en cinq chapitres.
Le premier chapitre donne un état de l'art concernant la modélisation orientée
«contrôle» et la commande du circuit d'admission d'air-essence. La problématique de
l'estimation et de la commande du couple moteur est également traitée.
Dans le deuxième chapitre, les modèles mis en oeuvre dans la suite du mémoire, et
l'identification de leurs paramètres sont présentés. Les modèles moyens qui sont décrits
permettent de faire un compromis entre complexité du modèle et adéquation aux synthèses des
lois de commande proposées. Le couple moteur n'étant pas mesuré sur un véhicule de série, son
estimation fait l'objet de la fin de ce chapitre.
Le troisième chapitre propose l'utilisation des modèles flous de type Takagi-Sugeno
(TS) pour réaliser le contrôle de différentes variables. Après un rapide rappel de ce type de
modèle, son application à la commande en couple, puis au problème de la richesse (rapport
air/essence à la stoechiométrie près) sont abordés.
Le quatrième chapitre correspond à un certains nombres d'essais réels qui ont été
réalisés sur le banc moteur. En particulier, ces essais ont permis de valider des lois de
commande présentées dans le chapitre précédent sur la commande du circuit d'air et du couple
moteur. Le dernier chapitre présente quelques perspectives à ce travail.
Gonzalez-Rojo, Sergio. "Contribution au diagnostic, à la supervision et à la conduite du trafic urbain". Toulouse 3, 2003. http://www.theses.fr/2003TOU30058.
Testo completoDridi, Mahjoub. "Contribution à la résolution des problèmes de régulation dans les systèmes de transport dans un contexte multicritère par approche évolutionniste". Ecole Centrale de Lille, 2004. http://www.theses.fr/2004ECLI0001.
Testo completoKünzle, Luis Allan. "Raisonnement temporel basé sur les réseaux de Petri pour les systèmes manipulant des ressources". Toulouse 3, 1997. http://www.theses.fr/1997TOU30150.
Testo completoPamart, Pierre-Yves. "Contrôle des décollements en boucle fermée". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00659979.
Testo completoLi, Nan. "Digital control strategies for DC/DC SEPIC converters towards integration". Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00760064.
Testo completoGauthier, Eric. "Utilisation des réseaux de neurones artificiels pour la commande d'un véhicule autonome". Phd thesis, 1999. http://tel.archives-ouvertes.fr/tel-00004833.
Testo completo