关键词: 知识库, 专家规则, 故障树, 故障诊断

Abstract: It is difficult to locate and analyze the fault by the traditional method as the structure of launch vehicles is complex and the fault mode is various. On the basis of the research of the launch vehicle system, an information fusion system for the fusion of multi-channel fault symptoms and a knowledge base system are designed. A fault diagnosis method based on fault tree is put forward, and a fault diagnosis platform for launch vehicles is developed. The reasoning machine of the system is mainly composed of rule reasoning and FTA, and the process of reasoning has been realized. Experimental results show that the fault diagnosis method can effectively diagnose the fault of the launch vehicle, and it has strong adaptability to different systems.

Key words: Knowledge base, expert rule, fault tree, fault diagnosis