• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (9): 168-176.doi: 10.3901/JME.2018.09.168

• 机械动力学 • 上一篇    下一篇

基于多尺度本征模态排列熵和SA-SVM的轴承故障诊断研究

姚德臣1,2, 杨建伟1,2, 程晓卿3, 王兴4   

  1. 1. 北京建筑大学机电与车辆工程学院 北京 100044;
    2. 北京建筑大学城市轨道交通车辆服役性能保障北京市重点实验室 北京 100044;
    3. 北京交通大学轨道交通控制与安全国家重点实验室 北京 100044;
    4. 太原科技大学计算机科学与技术学院 太原 030024
  • 收稿日期:2017-05-05 修回日期:2018-02-01 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: 姚德臣(通信作者),男,1984年出生,博士,副教授。主要研究方向为机械设备故障诊断、车辆动力学、转子动力学等。E-mail:yaodechen@bucea.edu.cn
  • 基金资助:
    国家自然科学基金(51605023)、长城学者培养计划(CIT&TCD20150312)、国家重点研发计划课题(2016YFB1200402)、轨道交通控制与安全国家重点实验室自主课题(RCS2010ZZ002)、建大英才培养计划课题资助项目。

Railway Rolling Bearing Fault Diagnosis Based on Muti-scale IMF Permutation Entropy and SA-SVM Classifier

YAO Dechen1,2, YANG Jianwei1,2, CHENG Xiaoqing3, WANG Xing4   

  1. 1. School of Machine-electricity and Automobile Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044;
    2. Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles, Beijing University of Civil Engineering Architecture, Beijing 100044;
    3. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044;
    4. Department of Computer Science and Technology, Taiyuan University of Science and Technology, Taiyuan 030024
  • Received:2017-05-05 Revised:2018-02-01 Online:2018-05-05 Published:2018-05-05

摘要: 针对轴承振动信号的非线性、非平稳性,提出一种基于多尺度本征模态排列熵和模拟退火优化支持向量机(Simulated annealing-support vector machine,SA-SVM)的列车轴承故障诊断方法。该方法首先对获取的轴承振动信息进行小波降噪处理,接着通过集合经验模态分解(Ensemble empirical mode decompose,EEMD)将去噪信号分解成若干个平稳的本征模态函数(Intrinsic mode function,IMF),并提取多尺度本征模态排列熵作为SVM输入,在用样本训练SVM时,用SA对SVM的核函数进行优化,提高其分类准确率,最终实现智能化故障诊断。试验结果表明,基于多尺度本征模态排列熵和SA-SVM的列车轴承故障诊断方法能准确识别列车轴承故障类型,具有重要的实际工程应用价值。

关键词: EEMD, SA-SVM, 多尺度本征模态排列熵, 故障诊断, 列车轴承

Abstract: The vibration signals resulting from rolling bearings are non-linear and non-stationary, an approach for the fault diagnosis of railway rolling bearings using the multi-scale IMF permutation entropy and SA-SVM classifier is proposed. The signal is first denoised using wavelet de-noising (WD) as a pre-filter, which improves the subsequent decomposition into a number of intrinsic mode functions (IMFs) using ensemble empirical mode decompose (EEMD). Secondly, the multi-scale IMF permutation entropy are extracted as feature parameters. Finally, the extracted features are given input to SA-SVM for an automated fault diagnosis procedure. The results demonstrate its effectiveness for railway rolling bearings fault diagnosis. The fault diagnosis system has high application value in practical engineering.

Key words: EEMD, fault diagnosis, multi-scale IMF permutation entropy, railway rolling bearing, SA-SVM

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