Fault detection and optimization for networked control systems with uncertain time-varying delay  

作　　者：Qing Wang Zhaolei Wang Chaoyang Dong Erzhuo Niu 

机构地区：[1]School of Automation Science and Electrical Engineering, Beihang University [2]Beijing Aerospace Automatic Control Institute [3]School of Aeronautic Science and Engineering, Beihang University [4]Flight Automatic Control Research Institute, Aviation Industry Corporation

出　　处：《Journal of Systems Engineering and Electronics》2015年第3期544-556,共13页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61074027;61273083)

摘　　要：The observer-based robust fault detection filter design and optimization for networked control systems （NOSs） with uncer- tain time-varying delays are addressed. The NCSs with uncertain time-varying delays are modeled as parameter-uncertain systems by the matrix theory. Based on the model, an observer-based residual generator is constructed and the sufficient condition for the existence of the desired fault detection filter is derived in terms of the linear matrix inequality. Furthermore, a time domain opti- mization approach is proposed to improve the performance of the fault detection system. To prevent the false alarms, a new thresh- old function is established, and the solution of the optimization problem is given by using the singular value decomposition （SVD） of the matrix. A numerical example is provided to illustrate the effectiveness of the proposed approach.The observer-based robust fault detection filter design and optimization for networked control systems （NOSs） with uncer- tain time-varying delays are addressed. The NCSs with uncertain time-varying delays are modeled as parameter-uncertain systems by the matrix theory. Based on the model, an observer-based residual generator is constructed and the sufficient condition for the existence of the desired fault detection filter is derived in terms of the linear matrix inequality. Furthermore, a time domain opti- mization approach is proposed to improve the performance of the fault detection system. To prevent the false alarms, a new thresh- old function is established, and the solution of the optimization problem is given by using the singular value decomposition （SVD） of the matrix. A numerical example is provided to illustrate the effectiveness of the proposed approach.

关 键 词：fault detection networked control systems residual generator time-varying delay time domain optimization approach. 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] V271.41[自动化与计算机技术—控制科学与工程]