基于分散化预测滤波的故障诊断方法研究

Abstract

Abstract: A new fault diagnosis method for a complex system with more than one type of faults is proposed in this paper．To distinguish different faults，two kinds of residuals generated from only one decentralized predictive filter are used，because they have different sensitivities to component/actuator faults and sensor faults．Even more，for a component or actuator fault，the source of it can be found exactly depending on the relationship between residuals and faults．And for a sensor fault，it can be detected and isolated easily by using the decentralized structure of predictive filters．To elaborate this method，a simulation for a satellite attitude determination system is presented．The simulation results demonstrate that the decentralized structure of predictive filters is more powerful than the centralized one in fault diagnosis and system reconfiguration．

Key words:

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CLC Number:

TP271.62，TP206.3

LI Ji.. Fault Diagnosis Method Based on a Decentralized Predictive Filter[J].Aerospace Contrd and Application, 2008, 34(3): 17-22.

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satellite attitude determination system
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satellite attitude determination system
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Fault Diagnosis Method Based on a Decentralized Predictive Filter

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