Reliable H1 control for uncertain nonlinear discrete- time systems subject to multiple intermittent faults in sensors and/or actuators

This study focuses on passive fault-tolerant control for a class of uncertain nonlinear discrete-time systems subject to multiple intermittent faults. The considered intermittent faults are assumed to be additive ones in sensors and/or actuators. To achieve fault-tolerant control, a dynamic output-feedback controller is designed such that the closed-loop system remains stable and satisfies acceptable performance, even when there are parameter uncertainties, nonlinearities of specific type, and multiple additive intermittent sensor and/or actuator faults. The linear matrix inequality method is employed to obtain sufficient conditions for achieving fault tolerance and ensuring the prescribed H1 performance index. Finally, the effectiveness of the proposed method is demonstrated by simulation examples. & 2015 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.