Dynamic output feedback fault tolerant controller design for Takagi-Sugeno fuzzy systems with actuator faults

Authors:
Ke Zhang;Bin Jiang;Marcel Staroswiecki
Affiliations:
College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China;College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China;Systèmes et applications des technologies de l'information et de l'énergie, Ecole Normale Supérieure de Cachan, Université Lille1 Sciences et Technologies, Centre National de l ...
Venue:
IEEE Transactions on Fuzzy Systems
Year:
2010

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Abstract

This paper addresses the problem of robust fault estimation and fault tolerant control (FTC) for Takagi-Sugeno (T-S) fuzzy systems. A fuzzy-augmented fault estimation observer (AFEO) design is proposed to achieve fault estimation of T-S models with actuator faults. Furthermore, based on the information of online fault estimation, an observer-based dynamic output feedback-fault tolerant controller (DOFFTC) is designed to compensate for the effect of faults by stabilizing the closed-loop system. Sufficient conditions for the existence of both AFEO and DOFFTC are given in terms of linear matrix inequalities. Simulation results of an inverted pendulum system are presented to illustrate the effectiveness of the proposed method.