基于可拓规则的故障诊断专家系统推理机的研究

摘要

针对传统产生式规则在知识表示、匹配冲突等方面存在的局限,提出了一种将可拓规则用于故障诊断专家系统推理机的方法;该方法重点研究了可拓规则的匹配原理和可拓推理机算法思想,提出了匹配度计算方法并用来计算故障条件与规则前件的匹配度;根据研究表明,利用可拓规则进行推理,不仅在知识表示上比传统产生式规则推理有所提高,而且还解决了传统专家系统容易出现匹配冲突等问题;最后以AMU故障推理为例,说明可拓推理机具有推理速度快、效率高等优点,取得了较好的推理效果.%To resolve the problems of knowledge representation and match conflicts in the production rule, a method of fault diagnosis expert system inference engine is presented based on extension rule. The method focuses on the matching principle of extension rule and the algorithm ideas of extension inference, is presented to calculate the matching between fault conditions and antecedent rules. According to the result of research show that the reasoning of extension rules, not only in the knowledge representation than the traditional production rules has increased, but also to solve the problem that the traditional expert system is prone to matching conflict and so on.. An example of AMU fault reasoning, extension inference engine with fast inference speed, high efficiency etc, to obtain a better inference results.