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故障系统状态观测器及其在一类非线性系统故障诊断中的应用

The Faulty Systems State Observer and Its Application to Fault Diagnosis in a Class of Nonlinear Systems
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摘要 首次提出了故障系统状态观测器 (FSSO)的概念 ,分析了 FSSO与传统观测器的区别 ,指出了 FSSO的两种可能的结构形式 ;针对一类满足 L ipschitz条件的非线性、有界不确定性系统 ,提出了一种基于 FSSO的新型鲁棒故障诊断方法 ,分析了诊断方法的鲁棒性和灵敏度 .该方法不但能够检测、分离故障 ,而且能够给出故障信号随时间变化的特性估计 . The concept of faulty systems state observer (FSSO) is presented for the first time. The difference between FSSO and the traditional observer is analysed, and two possible structures for FSSO are pointed out. A new robust fault diagnosis method based on FSSO for a class of nonlinear systems with bounded uncertainties satisfying Lipschitz condition is proposed and its robustness and sensitivity are also analysed. This method can detect and isolate faults. It can also estimate the characteristics of the fault signal which varies with time. The result of the simulation indicates its validity.
作者 陈玉东 施颂椒 翁正新
机构地区 上海交通大学自动化研究所
出处 《应用科学学报》 CAS CSCD 2002年第2期153-159,共7页 Journal of Applied Sciences
关键词 故障系统状态观测器 非线性系统 不确定性 故障诊断 鲁棒性 灵敏度 LIPSCHITZ条件 nonlinear systems uncertainty fault diagnosis state observer
分类号 TP277 [自动化与计算机技术—检测技术与自动化装置]
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参考文献10

  • 1Chen Jie, Patton R J. Robust Model-based Fault Diagnosis for Dynamic Systems[M]. Boston: Kluwer Academic Publishers, 1999.
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二级参考文献6

  • 1[1]Park J and Rizzoni G. An Eigenstructure Assignment Algorithm for the Design of Fault Detection Filters. IEEE Trans. Automatic Control. 1997, 39(7): 1521～ 1524
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共引文献13

应用科学学报
2002年 第2期

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