一种基于实例的故障混合诊断方法

A Hybrid Fault Diagnosing Method Based on Cases

首先提出了一种基于实例的混合推理总体结构。在一级实例库和二级实例库概念的基础上，定义了实例的结构及组织。并设计了三级推理机制，即以故障代码为匹配目标、一级实例库为匹配空间进行的一级实例推理，以模糊化的初始故障征兆为匹配目标的二级实例推理。最后给出了故障征兆模糊处理以及实例匹配的方法。

A hybrid inference method based on cases is firstly presented.Based on concepts about the first grade case base and the second grade case base, cases' framework and organiztion are defined. Then the three grade inference mechanism is designed, including the first grade inferernce viewing diagnosis codes as the matching targets and the first grade case base as the matching space, the second grade inference viewing the fuzzified fault symptom as the matching targets, and the third inference based on rules. Finally, the methods abuot the fault symptoms' fuzzication and the case metching are put forward.