本文以条件诊断系统为研究对象，首先对条件诊断系统的互测PMC模型进行研究，把传统诊断系统的有向图表达式 G（V ，E）转换成互测有向图表达式 G（F ，T ，M ，HF），然后对条件诊断互测有向图表达式中相互关联的F、T、M、HF四个集合的性质和定理进行研究，最后提出一种基于互测PMC模型的条件诊断算法，该算法可简单、快速地找出故障模式，并对具体症侯是否有唯一故障模式进行判定。%Taking conditional diagnosis system as main research object ,this paper try to take advantage of ex-test PMC mod-el to produce a new diagnosis ex-test digraph G( F ,T ,M ,HF) .After analyzing a series of properties and lemmas of F ,T ,M ,HF four related sets ,the paper introduce a conditional diagnosis algorithm based on ex-test PMC model finally .This algorithm can find out the fault pattern simply and correctly ,and determine whether a given syndrome have a unique fault pattern .
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