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针对一类带有执行器故障和有界干扰的T-S模糊系统,提出了一种模糊自适应的容错控制方法。由于控制系统的故障和干扰上界是未知的,首先提出了参数自适应律来估计控制器中的未知参数。在此基础上,给出了一种自适应容错控制方法。应用Lyapunov函数理论,给出和证明了带有执行器故障和有界干扰的T-S模糊闭环系统的稳定的充分条件。仿真结果进一步验证了所提出的方法的有效性。
Aiming at a kind of T-S fuzzy system with actuator fault and bounded disturbance, a fuzzy adaptive fault-tolerant control method is proposed. Since the upper bound of fault and disturbance of the control system is unknown, a parameter adaptive law is first proposed to estimate unknown parameters in the controller. On this basis, an adaptive fault-tolerant control method is given. Applying Lyapunov function theory, the sufficient and sufficient condition for the stability of T-S fuzzy closed-loop system with actuator fault and bounded disturbance is given and proved. Simulation results further verify the effectiveness of the proposed method.