International Journal of Computer Science Issues

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In this paper, a new actuator fault tolerant control strategy is proposed for nonlinear Takagi-Sugeno systems. The proposed control law uses the estimated fault and the error between the faulty system state and a reference system state. A proportional integral observer with unknown inputs is conceived in order to estimate simultaneously states and actuator faults. The problem of design of observer and the fault tolerant control law is formulated using linear matrix inequalities. Simulation example is given to illustrate the proposed method.