China Mechanical Engineering ›› 2016, Vol. 27 ›› Issue (05): 674-679.

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Fault Diagnosis Method for Rotating Machinery Based on AMD

Shi Peiming1,2;Su Cuijiao1,2;Zhao Na1,2;Han Dongying3   

  1. 1.Key Laboratory of Measurement Technology and Instrumentation of Hebei Provnice,YanshanUniversity,Qinhuangdao,Hebei,066004
    2.Yanshan University,Qinhuangdao,Hebei,066004
  • Online:2016-03-10 Published:2016-03-11
  • Supported by:

基于解析模态分解的机械故障诊断方法

时培明1,2;苏翠娇1,2;赵娜1,2;韩东颖2   

  1. 1.燕山大学河北省测试计量技术及仪器重点实验室,秦皇岛,066004
    2.燕山大学,秦皇岛,066004
  • 基金资助:
    国家自然科学基金资助项目(51475407);河北省自然科学基金资助项目(E2015203190);河北省高等学校自然科学研究重点项目(ZD2015050) 

Abstract:

Aiming at the problems of fault diagnosis for rotating machinery, a fault diagnosis method for rotating machinery was proposed based on AMD herein. As long as the frequency components of signals were known, signals with different frequency components might be decomposed into single frequency signals using the AMD method, especially to decompose a signal with closely spaced frequency components. For the fault feature frequency prediction in rotating machinery fault diagnosis, AMD method might be used to extract fault feature frequency signals in mechanical vibration signals and the frequency spectrum was obtained. If the frequency spectrum contains the fault feature frequency, it shows that the faults exist in mechanical vibration signals. The analysis of the rolling bearing fault signals and the comparison with empirical model decomposition(EMD), it shows that the AMD method is effective and more rapid, accurate than EMD.

Key words: analytical mode decomposition(AMD), signal extraction, fault diagnosis, rotating machinery

摘要:

针对旋转机械故障诊断问题,提出了一种基于解析模态分解(AMD)的旋转机械故障诊断方法。只要知道信号的频率成分,AMD方法就可以将含不同频率成分的信号分解为单频率信号,尤其能够分解有紧密间隔频率成分的信号。对于可预知故障特征频率的旋转机械的故障诊断,可利用AMD方法提取机械振动信号中故障特征频率所在频段的信号,并求该段信号的频谱,若频谱中含有故障特征频率,则说明机械振动信号中存在该故障。通过对滚动轴承故障信号和转子不对中故障信号的分析以及和经验模态分解(EMD)方法的对比,证明了AMD方法的有效性,且AMD方法比EMD方法更快速、准确。

关键词: 解析模态分解, 信号提取, 故障诊断, 旋转机械

CLC Number: