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Títol:
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An LMI approach to robust fault estimation for a class of nonlinear systems
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Autor/a:
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Witczak, Marcin; Buciakowski, Mariusz; Puig Cayuela, Vicenç; Rotondo, Damiano; Nejjari Akhi-Elarab, Fatiha
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Altres autors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial; Universitat Politècnica de Catalunya. SAC - Sistemes Avançats de Control; Universitat Politècnica de Catalunya. SIC - Sistemes Intel·ligents de Control |
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Abstract:
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The paper presents a robust fault estimation approach for a class of nonlinear discrete-time systems. In particular, two sources of uncertainty are present in the considered class of systems, that is, an unknown input and an exogenous external disturbance. Thus, apart from simultaneous state and fault estimation, the objective is to decouple the effect of an unknown input while minimizing the influence of the exogenous external disturbance within the inline image framework. The resulting design procedure guarantees that a prescribed disturbance attenuation level is achieved with respect to the state and fault estimation error while assuring the convergence of the observer. The core advantage of the proposed approach is its simplicity by reducing the fault estimation problem to matrix inequalities formulation. In addition, the design conditions ensure the convergence of the observer with guaranteed inline image performance. The effectiveness of the proposed approach is demonstrated by its application to a twin rotor multiple-input multiple-output system |
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Matèries:
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-Àrees temàtiques de la UPC::Informàtica::Automàtica i control
-Reliability (Engineering)
-fault diagnosis
-fault identification
-robust estimation
-nonlinear systems
-observers
-linear matrix inequalities
-Fiabilitat (Enginyeria) |
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Drets:
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Tipus de document:
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Article - Versió presentada
Article |
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