应用证据推理理论实现卫星故障诊断信息的融合方法

METHOD OF SATELLITE FAULT DIAGNOSISAPPLYING EVIDENCE REASONING THEORY TOMERGE INFORMATION

针对卫星故障诊断中应用同一征兆域信息难以区分的故障,提出了一种基于证据推理理论的故障诊断新方法。该方法应用证据推理理论实现卫星故障不同征兆域信息的融合,从而获得更加准确的故障定位。文中分析了卫星故障诊断中应用证据推理理论进行信息融合的必要性,研究了应用证据推理理论实现卫星故障不同征兆域信息融合的理论方法,给出了该方法的实际应用,讨论了应用该方法需注意的问题,最后给出了结论。

It is difficult to diagnose some faults of satellites using the knowledge of only one symptom field. Based on Evidence Reasoning Theory, this paper introduces a new method to diagnose the faults. Information of different symptom field of satellite faults is merged by use the new method, thus the faults can be located more accurately. Firstly, the necessity of applying Evidence Reasoning Theory to merge the information in satellite fault diagnosis is analyzed. Secondly, the theoretical method of applying Evidence Reasoning Theory to merge information of different symptom field of satellite fault is studied. Thirdly, the practical application of the method is given. Fourthly, the notations that should be paid more attention to are analyzed. Finally, the conclusions of this paper are given.