基于粗糙集的民航飞机故障诊断规则获取方法

针对传统的民航飞机故障诊断规则来源于适航审定的标准文件,不能满足改善诊断效率的要求,在建立民航飞机故障诊断的知识复合模型的基础上,从可靠性报告中提取原始数据,进而基于粗糙集对这些数据进行预处理和约简,获取新的诊断规则,有效地提高了故障诊断的效率.实例推导出新的诊断规则,实现了传统的故障诊断规则的改进,说明了方法的可行性.

A Gaining Method for Fault Diagnosis Rules in the Civil Aircraft based on Rough Set Theory

The traditional rules of fault diagnosis are originated from the airworthy documents,and cannot meet the demand.The multiplex knowledge models for fault diagnosis of the civil aircraft are built.It points out that the raw data can be obtained from Reliability reports,and can be preprocessed and reduced according to the Rough Set theory.Then the raw data are changed into new diagnosis rules.The method can improve the efficiency of fault diagnosis.The example produces some new rules,so the traditional methods that obtain the diagnosis rules are improved.And it shows the method is reliable.