Robust fault-tolerant tracking control for a class of T-S fuzzy systems subject to actuator failure and external disturbance

Based on the Takagi-Sugeno (T-S) fuzzy model approach, this study discusses robust fault-tolerant tracking controller design for non-linear systems affected by external disturbances, uncertainties, and actuator failures. In contrast to existing results, assumes fault includes linear nonlinear terms, a state feedback is designed improve stability of system when actuators fail. Using non-quadratic Lyapunov function, new sufficient conditions L_2-gain performance analysis are derived determine simultaneously minimal level gains. The robustness proposed approach also investigated. An illustration theoretical developments provided Duffing forced oscillation system.