基于组件逻辑结构关系的故障诊断方法

Model Diagnosis Based on Components Logic Connection

提出一种利用组件逻辑结构关系直接求解所有最小诊断的方法。该方法将系统的最小诊断求解分解为离线建立规则和在线确定诊断两个步骤。方法的本质属于溯因诊断。以Poly-box系统为例验证了方法的正确性,同时对方法的诊断解的完备性、可采纳性、重用性进行了分析说明。针对方法中的规则建立效率低下的问题,提出了两点改进措施,并仍以Poly-box系统为例进行了对比验证,结果表明,改进的方法提升了诊断规则的建立效率。

A method using components logic connection to resolve all minimal diagnoses is put forward. The method, whose attribute is abductive diagnosis, divides the resolve process of all minimal diagnosis into two steps： build diagnosis rules off-line first and gain the diagnosis on-line second. The correctness of this method is proved by using Poly-box system, while some characters of the conclusion are shown by analysis. To enhance the efficiency of rule-building, two improve measures are proposed, and the conclusions have proved that the efficiency is truly im- proved.