[1]陈爱武,贾建芳,吴俊清.基于自适应观测器的线性离散系统故障诊断[J].南京理工大学学报(自然科学版),2011,(03):334-337.
 CHEN Ai-wu,JIA Jian-fang,WU Jun-qing.Fault Diagnosis for Linear Discrete Systems Based on Adaptive Observer[J].Journal of Nanjing University of Science and Technology,2011,(03):334-337.
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基于自适应观测器的线性离散系统故障诊断
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2011年03期
页码:
334-337
栏目:
出版日期:
2011-06-30

文章信息/Info

Title:
Fault Diagnosis for Linear Discrete Systems Based on Adaptive Observer
作者:
陈爱武1贾建芳2吴俊清2
1. 中国矿业大学( 北京) 机电与信息工程学院,北京100083; 2. 中北大学信息与通信工程学院,山西太原030051
Author(s):
CHEN Ai-wu1JIA Jian-fang2WU Jun-qing2
1.School of Mechanical Electronic and Information Engineering,China University ofMining & Technology(Beijing),Beijing 100083,China;2.School of Information and Communication Engineering,North University of China,Taiyuan 030051,China
关键词:
线性离散系统 自适应观测器 故障诊断
Keywords:
linear discrete systems adaptive observers fault diagnosis
分类号:
TH165.3
摘要:
为诊断线性离散系统中的故障,提出了基于状态估计的自适应观测器故障诊断方法。利用基于Lyapunov函数的自适应观测器构造残差信号,设计了观测器增益矩阵和故障估计值的自适应调节规律。保证Lyapunov函数的一阶导数为负,所提出的自适应调整律能够实现观测器稳定和故障估计误差收敛。仿真结果表明,该方法可以及时检测系统故障,且能够诊断故障大小。
Abstract:
To diagnose the fault of a class of linear discrete systems,a fault diagnosis algorithm using an adaptive observer based on state estimation is presented.A Lyapunov-based adaptive observer is proposed in producing residual signals.The observer gain matrix and adaptive adjusting rule of the fault estimate is designed.The first order derivative of the Lyapunov function is guaranteed to be negative.By using the adaptive regulating algorithm,the observer is ensured to be stable and the estimation errors are guaranteed to converge.The simulation results illustrate that the proposed algorithm can rapidly detect the system fault and diagnose its value.

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备注/Memo

备注/Memo:
基金项目:山西省自然科学基金( 2009011026 - 2) 作者简介:陈爱武( 1966 - ) ,女,博士生,研高工,主要研究方向: 测控技术,E-mail: chen - aiwu@163. com。
更新日期/Last Update: 2012-06-30