分布式测量下闭环系统的故障检测

上海交通大学学报（自然版） ›› 2015, Vol. 49 ›› Issue (06): 757-761.

• 自动化技术、计算机技术 • 上一篇下一篇

分布式测量下闭环系统的故障检测

刘洋，何潇，周东华

（清华大学自动化系；清华信息科学与技术国家实验室，北京 100084）

收稿日期:2011-12-05 出版日期:2015-06-29 发布日期:2015-06-29
基金资助:
国家自然科学基金项目(61210012, 61290324, 61473163, 61490701)资助

Fault Detection for a Class of Closed-Loop Systems with Distributed Measurements

LIU Yang,HE Xiao,ZHOU Donghua

(Department of Automation; National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China)

Received:2011-12-05 Online:2015-06-29 Published:2015-06-29

摘要/Abstract

摘要：

摘要：研究了一类含分布式测量的闭环系统故障检测问题.系统中存在的未建模动态使得反馈控制对残差信号以及故障检测性能产生影响，在设计残差生成器增益时需考虑反馈控制律.系统被多个分布式传感器节点同时测量，各节点可以与相邻节点通信.在存在模型不精准和分布式测量的情况下，基于最小二乘准则设计分布式残差生成器，每个节点都利用自身测量和相邻节点测量生成残差信号并判断系统中是否有故障发生.该残差生成器可以利用递推方法设计，因此适用于在线应用.仿真实验表明了本方法的有效性.

关键词: 闭环系统, 分布式测量, 故障检测

Abstract:

Abstract： The fault detection problem for a class of closed-loop systems with distributed measurements was considered in the paper. The unmodeled dynamics was taken into account, and thus the feedback control would directly influence the residual signal and the fault detection performance. As a result, the feedback control law was considered in the design of the proposed residual generator. The addressed systems were monitored by multiple distributed sensors, each of which could communicate with its neighboring nodes. In the presence of the unmodeled dynamics and distributed measurements, a least mean-square distributed residual generator was designed, where each node could obtain the residual signals and detect the possible faults based on not only local measurements but also measurements transmitted from its neighboring nodes. The algorithm could be carried out in a recursive way and thus is suitable for online application. A numerical example was provided to show the effectiveness of the proposed strategy.

Key words: closed-loop system, distributed measurements, fault detection

中图分类号:

TP 273

刘洋，何潇，周东华. 分布式测量下闭环系统的故障检测[J]. 上海交通大学学报（自然版）, 2015, 49(06): 757-761.

LIU Yang,HE Xiao,ZHOU Donghua. Fault Detection for a Class of Closed-Loop Systems with Distributed Measurements[J]. Journal of Shanghai Jiaotong University, 2015, 49(06): 757-761.

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分布式测量下闭环系统的故障检测

Fault Detection for a Class of Closed-Loop Systems with Distributed Measurements

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