Actuator fault estimation and accommodation for switched systems with time delay: Discrete-time case
1College of Automation, Huaiyin Institute of Technology, 1 Meicheng Road, Huaian, 223003 Jiangsu, China; College of Automation, Nanjing University of Science and Technology, Nanjing 210094, China.
Abstract:
This paper investigates the problems of actuator fault estimation and accommodation for discrete-time switched systems with state delay. By using reduced-order observer method and switched Lyapunov function technique, a fault estimation algorithm is achieved for the discrete-time switched system with actuator fault and state delay. Then based on the obtained online fault estimation information, a switched dynamic output feedback controller is employed to compensate for the effect of faults by stabilizing the closed-loop systems. Finally, an example is proposed to illustrate the obtained results.
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