| 基于线性化技术的非线性系统故障诊断 |
| |
| 引用本文： | 陈玉东,施颂椒,翁正新.基于线性化技术的非线性系统故障诊断[J].应用科学学报,2002,20(4):365-368. |
| |
| 作者姓名： | 陈玉东 施颂椒 翁正新 |
| |
| 作者单位： | 上海交通大学自动化研究所, 上海 200030 |
| |
| 摘 要： | 针对非线性闭环稳定系统,提出了一种基于线性化技术的故障诊断方法.首先将原系统在其工作点进行线性化处理,在此基础上设计系统的状态观测器,从而得到故障信号的初始估计结果;然后利用状态观测误差和故障估计误差之间的关系对估计结果进行校正,得到最终的故障辨识结果.仿真结果表明了该方法的有效性.
|
| 关 键 词： | 故障诊断 非线性系统 稳定性 线性化 |
| 文章编号： | 0255-8297(2002)04-0365-04 |
| 收稿时间： | 2001-06-19 |
| 修稿时间： | 2001-09-10 |
Fault Diagnosis for Nonlinear Systems Based on Linearization Technique |
| |
| CHEN Yu dong,SHI Song jiao,WENG Zheng xin.Fault Diagnosis for Nonlinear Systems Based on Linearization Technique[J].Journal of Applied Sciences,2002,20(4):365-368. |
| |
| Authors: | CHEN Yu dong SHI Song jiao WENG Zheng xin |
| |
| Affiliation: | Institute of Automation, Shanghai Jiaotong University, Shanghai 200030, China |
| |
| Abstract: | A fault diagnosis method based on linearization technique for nonlinear closed loop stable systems is proposed. It first linearizes the original system on its working point using linearization technique and designs state observer for the linearized systems so that the initial estimates for fault signals can be obtained. Then the ultimate estimates for fault identification are obtained through the correction based on the relation between the error of state observe and that of state estimate. Simulation results demonstrate its validity. |
| |
| Keywords: | fault diagnosis nonlinear systems linearization stability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《应用科学学报》浏览原始摘要信息 |
|
点击此处可从《应用科学学报》下载全文 |
