A Robust Fault Detection and Isolation Scheme Based on Unknown Input Observers for Discrete Time-delay System with disturbance

被引：0

作者：

Wang, Hongyu ^{[1
]}

Tian, Zuohua ^{[1
]}

Shi, Songjiao ^{[1
]}

Weng, Zhenxin ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Automat, Shanghai 200240, Peoples R China

来源：

WMSCI 2008: 12TH WORLD MULTI-CONFERENCE ON SYSTEMICS, CYBERNETICS AND INFORMATICS, VOL III, PROCEEDINGS | 2008年

关键词：

fault diagnosis; unknown input observer; time-delay system; lifting method;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A robust fault detection and isolation (FDI) scheme for discrete time-delay system with disturbance is proposed. The FDI scheme can not only detect but also isolate the faults. The lifting method is exploited to transform the discrete time-delay system into a non-time-delay form. A generalized structured residual set is designed based on the unknown input observer (UIO). For each residual generator, one of the system input signal together with the corresponding actuator fault and the disturbance signals are treated as an unknown input term. The residual signals can be robust against the disturbance, while have the capacity to isolate the actuator faults. The proposed method has been verified by a numerical example.

引用

页码：208 / 211

页数：4

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