基于总线观测的微机故障诊断专家系统研究

Microcomputer Fault Diagnosis Expert System Based on Bus Observation

采用与或树、产生式规则和ＤＢＭＳ相结合的知识表示方法建立专家系统。论述了基于总线观测的知识获取与诊断方法，提出了基于总线观测的可测性分析方法和故障信息的相关性分析方法。该方法为总线测试信息的有效性及故障搜索策略的生成与优化提供了分析和判断依据，使系统有较高的推理效率和诊断分辨率。

The knowledge presentation of the combination of the AND/ OR tree and production rule is applied in the expert system. A knowledge acquisition and diagnosis method based on the bus observation are described in this paper. The analysis of the testability of the bus information and the relativity of the fault information is given, which provides the validity criterion for the diagnosis method based on the bus observation. The test results demonstrate that the expert system is quite good in the inference efficiency and diagnostic resolution.