基于ECA规则推理的故障诊断技术

摘要

为适应故障诊断系统的主动性需求,扩展基于产生式规则专家系统的描述能力,将Event-condition-aetion(ECA)规则引入故障诊断系统,提出了基于ECA规则推理故障诊断系统的基本框架.形式化故障,分析故障要素与规则的关联,定义利用ECA规则对故障进行建模的方法,在此基础上阐述了基于ECA规则推理进行故障诊断的过程.以高速列车地面故障诊断系统为例验证了该设计的有效性与准确性.%To meet the initiative necessity in fault diagnosis system and improve presentation power of existing expert system based on production rules, Event-condition-action rule is introduced into fault diagnosis system and framework of fault diagnosis system based on ECA rules reasoning is proposed. Fault is formalized and association between fault elements and ECA rule is analyzed. Based on these,diagnostic methods using ECA rules reasoning are expounded. Finally, validity of the proposed method is demonstrated in fault diagnosis system of high-speed train.