首页|期刊导航|东华大学学报（英文版）|A Robust Fault Detection and Isolation Scheme Based on Unknown Input Observers for Discrete Time-delay System with Disturbance
东华大学学报（英文版）2008，Vol.25Issue(5)：552-555,4.
A Robust Fault Detection and Isolation Scheme Based on Unknown Input Observers for Discrete Time-delay System with Disturbance
A Robust Fault Detection and Isolation Scheme Based on Unknown Input Observers for Discrete Time-delay System with Disturbance
摘要
Abstract
This paper proposes a robust fault detection and isolation (FDI) scheme for discrete time-delay system with disturbance. 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 the 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 signals together with the corresponding actuator fault and the disturbance signals are treated as an unknown input term. The residual signals can not only be robust against the disturbance, but also be of the capacity to isolate the actuator faults. The proposed method has been verified by a numerical example.关键词
fault diagnosis/unknown input obseruer/time-delay system/lifting methodKey words
fault diagnosis/unknown input obseruer/time-delay system/lifting method分类
信息技术与安全科学引用本文复制引用
WANG Hong-yu,TIAN Zuo-hua,SHI Song-jiao,WENG Zheng-xin..A Robust Fault Detection and Isolation Scheme Based on Unknown Input Observers for Discrete Time-delay System with Disturbance[J].东华大学学报（英文版）,2008,25(5):552-555,4.基金项目
Supported by National Natural Science Foundation of China (No. 60574081) （No. 60574081）
