Title :
Robust observer-based fault estimation of switched systems
Author :
Wen Li ; Baotong Cui ; Wenying Mu
Author_Institution :
Sch. of IoT Eng., Jiangnan Univ., Wuxi, China
Abstract :
This paper considers observer-based fault estimation of switched systems. A robust estimator is proposed to simultaneously estimate the actuator fault and the state of the system. Based on the estimate of fault and the states, an observer based fault tolerant controller is designed to guarantee the input-to-state stability of the closed-loop switched system. Sufficient conditions for the existence of the fault tolerant controller are formulated in terms of linear matrix inequality. Finally, a numerical example is presented to illustrate the efficiency of the method.
Keywords :
closed loop systems; fault diagnosis; fault tolerant control; linear matrix inequalities; observers; time-varying systems; closed-loop switched system; input-to-state stability; linear matrix inequality; observer based fault tolerant controller; robust estimator; robust observer-based fault estimation; sufficient conditions; Fault tolerance; Fault tolerant systems; Observers; Robustness; Switched systems; Switches;
Conference_Titel :
Fuzzy Systems and Knowledge Discovery (FSKD), 2014 11th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4799-5147-5
DOI :
10.1109/FSKD.2014.6980953