Actuator fault diagnosis of time-delay systems based on adaptive observer 被引量：1

Actuator fault diagnosis of time delay systems based on adaptive observer

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摘要 A novel approach for the actuator fault diagnosis of time-delay systems is presented by using an adaptive observer technique. Systems without model uncertainty are initially considered, followed by a discussion of a general situation where the system is subjected to either model uncertainty or external disturbance. An adaptive diagnostic algorithm is developed to diagnose the fault, and a modified version is proposed for general system to improve robustness. The selection of the threshold for fault detection is also discussed. Finally, a numerical example is given to illustrate the efficiency of the proposed method. A novel approach for the actuator fault diagnosis of time-delay systems is presented by using an adaptive observer technique. Systems without model uncertainty are initially considered, followed by a discussion of a general situation where the system is subjected to either model uncertainty or external disturbance. An adaptive diagnostic algorithm is developed to diagnose the fault, and a modified version is proposed for general system to improve robustness. The selection of the threshold for fault detection is also discussed. Finally, a numerical example is given to illustrate the efficiency of the proposed method.

作者尤富强田作华施颂椒

机构地区 Dept .of Automation

出处《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2005年第3期624-631,共8页 系统工程与电子技术（英文版）

基金 This project was supported by the National Natural Science Foundation of China (60274058) .

关键词 fault detection and diagnosis adaptive observer linear systems time delay. fault detection and diagnosis, adaptive observer, linear systems, time delay.

分类号 TP11 [自动化与计算机技术—控制理论与控制工程]

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