|Table of Contents|

Fault Diagnosis for Linear Discrete Systems Based on Adaptive Observer

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2011年03期
Page:
334-337
Research Field:
Publishing date:

Info

Title:
Fault Diagnosis for Linear Discrete Systems Based on Adaptive Observer
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
Keywords:
linear discrete systems adaptive observers fault diagnosis
PACS:
TH165.3
DOI:
-
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.

References:

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Last Update: 2012-06-30