故障树和证据推理结合的故障诊断技术

Fault Diagnosis System Based on Fault Tree and Evidence Reasoning

本文针对有效载荷特点建立了基于故障树模型的故障诊断框架,提出了适合有效载荷故障诊断的知识组织和表示方法及相应的推理控制策略,应用D-S证据理论解决了实际任务中有效载荷诊断信息不全面引起的不确定性问题,并通过对某飞行器上有效载荷的故障诊断验证了该方法的可行性。

The paper constructs the fault diagnosis body for payload, presents proper knowledge organization and representation methods and the relevant reasoning and control strategy for payload fault diagnosis. The application of D-S evidence reasoning theory resolves incertitude aroused by lack of payload information on real mission. This method is proved to be viable by experiments of one payload on one spacecraft.