诊断知识的分类树及其总体诊断策略

SORTING TREE OF DIAGNOSIS KNOWLEDGE AND GLOBAL DIAGNOSIS STRATEGY

设备故障诊断专家系统ＣＦＤＥＳ以分类树的形式组织诊断知识，同时并巧妙地构成知识库中诊断规则的规则号，从而实现了一种灵活的诊断策略。当寻找与故障现象相匹配的故障原因时，用户既可将整个知识库作为搜索空间，又可按需要调节搜索空间的大小。

This paper introduces a fault diagnosis expert system(CFDES).CFDES organizes all its diagnosis knowledges in a sorting tree, and forms its knowledge rule number of knowledge base perfectly. Therefore it accomplishes a flexible diagnosis strategy.When matching fault phenomenon with fault cause in order to find fault point, user not only can search global knowledge base, but also can search a part of knowledge base. User can easily adjust the size of searching space at the same time.