机械设备故障诊断专家系统的构建

The Construction of Machinery Fault Diagnoses Expert System

使用传统的故障诊断方法只能检测单一的信号,而对于复杂系统和多元性故障诊断比较困难,所以本文选用专家系统来解决这个问题。机械设备故障诊断专家系统主要包括知识库、知识获取、推理机,综合数据库,解释模块和人机接口6部分内容。使用本专家系统可以快速找出故障的部位、机理、性质和发展趋势,帮助快速给出维修与更新决策,缩短维修和停机时间,避免造成大的经济损失。在上海—50拖拉机上进行多次测试和应用,故障诊断准确率达到95%以上,并具有很好的运行性能。

Using the traditional fault diagnoses methods can only detect the single signal and it is very difficult to detect the complicated and many embranchment system,so it selects expert system to solve the problem.The expert system includes knowledge database ,knowledge acquisition ,reasoning machinery ,database .explanation module .people and computer interface and so on.Using it can find fault component,mechanism, ,character and development trend in time ,help make maintenance and replacement decision, shorten maintenance and stop time then avoid from large losses.At last using it in shanghai--50 tractor again and again, the fault diagnoses precision reaches 95% and the capability is good.