Actuator fault estimation and accommodation for switched systems with time delay: Discrete-time case. (May 2016)

• Record Type: Journal Article
• Authors: Du, Dongsheng; Jiang, Bin
• Is Part Of: ISA transactions. Volume 62(2016:May)
• Page Start: 137
• Page End: 144
• Publication Date: 2016-05
• Subjects: Discrete-time switched system -- Fault estimation -- Reduced-order observer -- Output feedback controller; Engineering instruments -- Periodicals; Engineering instruments; Periodicals; Electronic journals; 629.805
• DOI: 10.1016/j.isatra.2016.02.004
• Languages: English
• ISSNs: 0019-0578

Abstract

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.