航天器热故障诊断专家系统推理机的设计

魏传锋; 李运泽; 王浚; 于涛

航天器热故障诊断专家系统推理机的设计

1.
北京航空航天大学航空科学与工程学院, 北京 100083
2. 中国空间技术研究院?环境工程部, 北京 100029

基金项目: 航天科技集团"十五"预研课题资助项目(417010604-01)

详细信息

作者简介:
魏传锋(1976-),男,山东莱芜人,博士生, chfwei@163.com.

中图分类号: V 4164; TP 182
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出版历程
- 收稿日期: 2003-08-18
- 网络出版日期: 2005-01-31

Design on inference engine of the spacecraft thermal fault diagnosis expert system

1.
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. China Academy of Space Technology Environment Engineering Dept., Beijing 100029, China

摘要

摘要: 航天器在飞行过程中,经常发生各种故障,因此需要充分进行地面模拟试验.在航天器地面热试验的故障分析过程中,除了形成了可供故障诊断用的规则以外,还得到了许多具体的事例.后者很难用规则来准确地描述,但却是人类专家最珍贵的经验,必须加以利用.据此提出了基于事例推理和基于规则推理的混合推理机制,给出了具体的流程图,并就两种推理给出了相应的冲突消解策略.
- 航天器 /
- 故障诊断 /
- 专家系统 /
- 推理机
Abstract: When a spacecraft is on mission, various unpredictable faults often occur. It is very important that spacecrafts should be capable of diagnosing thermal faults automatically because most of them are difficult to be repaired on orbit, which requires a credible inference engine. And many rules and cases for fault diagnosis can be obtained after the spacecraft thermal test fault analysis. Those cases are difficult to describe in exact rules, but they are the most important experience in the spacecraft test. Combined with the rule-based reasoning and the case-based reasoning, the hybrid inference engine was produced, and the corresponding conflict resolutions were given. In rule-based reasoning, similarity judgement is used to resolve the conflict, and the numerical method differs from the non- numerical one. In case-based reasoning, the method of priority, ranking and credibility can be used; and the method of ranking is preferred to resolve the conflict if the number of all the cases is little.
- spacecraft /
- fault diagnosis /
- expert system /
- inference engine

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参考文献(1)

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