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Commande tolérante aux défauts des systèmes non linéaires : application à la dynamique du véhicule

Abstract : This work deals with the development of new technologies of fault tolerant control (FTC), state and sensor/actuator faults estimation for different classes of systems. The algorithm described in this manuscript improve and reduce the conservatism of existing results in the literature. Firstly, we were interested in the synthesis of adaptive observer-based FTC for Takagi-Sugeno (T-S) descriptor systems with time-delay in presence of actuator faults. The analysis and design conditions of observer-based FTC are formulated into a set of delay-dependent linear matrix inequalities (LMIs) which can be solved in a single step. Then, an adaptive observer-based FTC strategy is proposed for both T-S descriptor systems and T-S fuzzy systems subject to simultaneous actuator and sensor faults under external disturbances. The last part of this work concerns the issue of the lateral vehicle and rollover dynamics which is approximated by the T-S fuzzy model under the influence of actuator and sensor faults with external disturbances. Using the cone complementarity linearization algorithm, the proposed method offers less restrictive LMI conditions than those established in the literature. The proposed approach is validated in simulation on the Carsim software as an application of the dynamics of the vehicle in presence of sensor, actuator faults and external disturbances
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Dhouha Kharrat. Commande tolérante aux défauts des systèmes non linéaires : application à la dynamique du véhicule. Autre. Université de Picardie Jules Verne; Université de Sfax (Tunisie), 2019. Français. ⟨NNT : 2019AMIE0012⟩. ⟨tel-03640529⟩

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