基于专家系统的离合器制动器故障诊断

为了提高离合器制动器故障诊断的效率,针对离合器制动器故障的特点,设计了一种基于故障树分析和二元决策图的专家系统结构,提出了一种基于专家系统的离合器制动器故障诊断方法。首先利用鱼骨图分析离合器制动器的故障原因,建立故障树;其次利用二元决策图对故障树进行定性分析,获取诊断专家知识,并用产生式规则表示知识,建立故障诊断知识库;随后利用二元决策图对故障树进行定量分析,求解最小割集的重要度,确定规则优先级,从而解决规则冲突问题,提高故障诊断的效率;最后开发了离合器制动器故障诊断专家系统的原型系统,结果证明了该方法的有效性和可行性。

Fault diagnosis for clutch and brake based on expert system

In order to improve the efficiency of fault diagnosis for clutch and brake and aiming at the characteristics of clutch and brake failure, an expert system structure was designed based on fault tree analysis and binary decision diagrams, and a fault diagnosis method for clutch and brake based on expert system was proposed. Firstly, the fault tree was established by analyzing the fault cause of the clutch and brake through fishbone diagram. Secondly, the fault tree was analyzed qualitatively by binary decision diagrams to obtain the knowledge of diagnostic experts, and the fault diagnosis knowledge base was established by production rules. Then, the fault tree was analyzed quantita-tively by binary decision diagrams to calculate the importance of the minimum cut set and determine the rule priority, and the problem of rule conflict was solved and the efficiency of fault diagnosis was improved. Finally, the prototype system of the fault diagnosis expert sys-tem of clutch and brake was developed. The results show the effectiveness and feasibility of the proposed method.