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应用科学学报 ›› 2001, Vol. 19 ›› Issue (4): 308-312.

• 论文 • 上一篇    下一篇

一类线性时不变系统的故障诊断滤波器的设计

陈玉东, 翁正新, 施颂椒   

  1. 上海交通大学自动化研究所, 上海 200030
  • 收稿日期:2000-11-09 修回日期:2001-02-28 出版日期:2001-12-31 发布日期:2001-12-31
  • 作者简介:陈玉东(1972-),男,河北唐山人,博士生;施颂椒(1933-),男,上海人,教授,博导.

Fault Detection Filter Design for a Class of Linear Time-invariable Systems

CHEN Yu-dong, WENG Zheng-xin, SHI Song-jiao   

  1. Research Institute of Automation, Shanghai Jiaotong University, Shanghai 200030, China
  • Received:2000-11-09 Revised:2001-02-28 Online:2001-12-31 Published:2001-12-31

PDF

87

被引次数

2

摘要： 针对一类线性时不变系统,提出一种新型全阶故障诊断滤波器.它通过对原系统进行增广处理,再对新系统进行设计,从而间接得到原系统的诊断滤波器.这种滤波器能够在具有初始状态估计误差的情况下渐近诊断出具有n个测量输出的m个(可增加至n个)同时发生的故障.对诊断阈值和设计参数与诊断滤波器性能之间的关系进行了深入分析,给出了阈值和参数的选取原则.仿真结果表明这种诊断滤波器具有良好的诊断性能.

关键词: 解耦, 残差信号, 故障诊断, 滤波器

Abstract: A new full order detection filter for a class of time-invariable systems is proposed. It obtains a detection filter for the original system by augmenting the original system and designing a new one. This filter can asymptotically detect m (can be increased to n) faults that occur simultaneously with the initial state estimations error. The relation between the detection threshold, designing parameters and the performance of the filter is analysed. The rules for the choice of the parameters and threshold in the design procedure are also given. The simulation result indicates that this detection filter has good detection capability.

Key words: fault diagnosis, filter, residual signal, decouple

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