Izvorni znanstveni članak
https://doi.org/10.1080/00051144.2019.1639122
Fault diagnosis and fault-tolerant control for system with fast time-varying delay
Xiao-Ye Xi
; Shanghai Key Laboratory of Power Station Automation Technology, Department of Automation, Shanghai University, Shanghai, People’s Republic of China
Jian-Fei Zhao
; Shanghai Key Laboratory of Power Station Automation Technology, Department of Automation, Shanghai University, Shanghai, People’s Republic of China
Ting-Zhang Liu
; Shanghai Key Laboratory of Power Station Automation Technology, Department of Automation, Shanghai University, Shanghai, People’s Republic of China
Li-Min Yan
; Microelectronics R&D Center, Shanghai University, Shanghai, People’s Republic of China
Sažetak
This paper proposes a fault diagnosis and fault-tolerant control method for a system with a fast time-varying delay and time-varying parameters. A fault observer is designed to estimate faults, and an improved fast adaptive fault estimation (FAFE) algorithm is developed to reduce the relevant constraints in the general form of this algorithm. With newly introduced relaxation matrices, this study estimates faults in a system exhibiting a fast time-varying delay. Based on the estimated faults, an output feedback controller is designed to accommodate the faults. The fault-tolerant control is realized using the introduced relaxation matrices. An algorithm is derived to solve for the observer and controller. Finally, the theory and method are validated using a real example of a helicopter system.
Ključne riječi
Fault diagnosis; fault-tolerant control; fast time-varying delay; linear matrix inequality
Hrčak ID:
239833
URI
Datum izdavanja:
5.9.2019.
Posjeta: 623 *