Abstract:
This paper investigates the adaptive fuzzy tracking control problem for a class of uncertain nonlinear strict-feedback systems under sensor faults and unmeasured states. ...Show MoreMetadata
Abstract:
This paper investigates the adaptive fuzzy tracking control problem for a class of uncertain nonlinear strict-feedback systems under sensor faults and unmeasured states. To address the challenges incurred by the partial loss of effectiveness of sensors, a novel observer-based adaptive fault-tolerant controller is designed. Different from the existing state observer design methods, the new state observer contains an adaptive fault compensation mechanism. By employing a cubic absolute-value Lyapunov function, it is proved that the proposed fault-tolerant controller guarantees that all the signals in the closed-loop system are bounded and the tracking performance of the system can be guaranteed even if the sensor fault occurs. Simulation results verify the effectiveness of the proposed method.
Published in: IEEE Transactions on Fuzzy Systems ( Volume: 26, Issue: 4, August 2018)