基于故障树和规则的故障诊断专家系统

Fault Diagnosis Expert System Structure based on Fault Tree and Rule Based Resoning

故障树具有便于分析系统结构、刻画系统各事件的关联性优点;规则推理则具有推理直观、符合人类思维习惯优点,文章结合故障树分析和规则推理,提出一种故障诊断专家系统结构,相对解决了专家系统中知识获取困难和如何提高推理效率两个主要难点,最后以一个压-码转换电路板故障为诊断实例,证明了算法和结构的有效性。

Fault Tree（FT）has several features, such as easy to analyze the structure of system, depicts things＇ conjunction, Rule based reasoning（RBR） method has the intuitionistic feature to reason, it accords with the thinking of human.This paper combine the features of FTA and RBR to figure out the two difficulties,that is, hard to obtaining and analyzing system knowledge and how to construct a high efficient reasoning mechanism.Using a example,this paper proves the algorithm and structure are valid.