中国民航大学学报

• 民用航空 • 上一篇    下一篇

基于熵权优化的轴承故障诊断方法研究

瞿红春,王涛,黄远强   

  1. (中国民航大学航空工程学院,天津300300)
  • 收稿日期:2014-06-30 修回日期:2014-09-16 出版日期:2015-10-21 发布日期:2015-11-10
  • 作者简介:瞿红春(1971—),男,湖北荆州人,副教授,博士,研究方向为航空发动机故障诊断和维修管理.
  • 基金资助:

    国民航大学科研基金项目(05ky08m);中央高校基本科研业务费专项(ZXH2010D019)

Bearing fault diagnosis research based on entropy optimization

QU Hong-chun,WANG Tao,HUANG Yuan-qiang   

  1. (College of Aeronautiocal Enginering,CAUC,Tianjin 300300,China)
  • Received:2014-06-30 Revised:2014-09-16 Online:2015-10-21 Published:2015-11-10

摘要:

通过计算轴承信号特征故障频率与轴承故障样本特征频率的灰色关联度快速检测出轴承的故障类型。这种将灰色关联理论与信号分析方法结合的诊断方式可快速诊断出旋转机械系统中轴承的故障类型并进一步将故障部位进行隔离。灰色关联方法的应用使得诊断系统一方面可以对简单单一部位轴承故障进行诊断,另一方面对由2 种以上失效形式产生的故障也能进行诊断。由于采用熵权优化使得灰色关联排序有更大的区分度,诊断正确率更高。

关键词: 航空发动机, 轴承故障诊断, 灰色关联分析, 熵权优化, 旋转机械

Abstract:

The fault type of bearing can be detected quickly through grey relevance computed by the characteristic frequency of signal and standard fault modes. The bearing fault mode can be confirmed and the faulty parts of rotating machinery can be isolated with the combination of grey relation theory and signal analysis. Furthermore,the application of grey incidence analysis in the diagnostic system makes it easier to detect the fault mode generated by two or more failure forms. The detection accuracy is higher due to the bigger discrimination of grey relation ranks with entropy optimization.

Key words: aero engine, bearing fault diagnosis, grey incidence analysis, entropy optimization, rotating machinery

中图分类号: