基于EEMD、度量因子和快速峭度图的滚动轴承故障诊断方法

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (20) : 143-146.

论文

基于EEMD、度量因子和快速峭度图的滚动轴承故障诊断方法

彭畅，柏林，谢小亮

作者信息 +

Fault diagnosis method of rolling element bearings based on EEMD,measure-factor and fast kurtogram

PENG Chang,BO Lin,XIE Xiao-liang

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文章历史 +

摘要

在基于EMD、谱峭度以及包络分析的滚动轴承故障诊断方法的基础上，提出了改进的基于EEMD、度量因子和快速峭度图的诊断方法。该方法首先将故障信号进行EEMD分解得到一组IMFs，然后使用提出的基于距离的度量因子筛选出最能表征故障信息的IMF分量重构信号，接着利用快速峭度图构造最优带通滤波器，最后将滤波后的重构信号进行包络分析并将包络谱与轴承故障特征频率进行比较从而诊断出具体故障。滚动轴承的内圈故障仿真数据以及工程实测数据均很好地验证了提出的改进方法的有效性，说明其具有良好的应用前景。

Abstract

On the basis of fault diagnosis of rolling element bearings which combined signal processing method such as EMD, spectral kurtosis and envelope analysis, an improved methodology based on EEMD ，measure-factor and the fast kurtogram was proposed. Firstly, fault signals were decomposed into a group of intrinsic mode functions (IMFs) by ensemble empirical mode decomposition (EEMD). Secondly, the IMF which could best represent the fault information was selected to reconstruct signals using measure-factor based on distance. Thirdly, an optimal band-pass filter was constructed by the center frequency and bandwidth generated by the fast kurtogram. Finally, the specific fault was determined by comparing the envelope spectrum of filtered signals with the fault characteristic frequency of rolling element bearings. The effectiveness of the proposed methodology was demonstrated by the simulated data and actual signals of inner race, and the improved method had a good prospect in the application of rolling element bearing diagnosis.

导出引用

彭畅;柏林;谢小亮. 基于EEMD、度量因子和快速峭度图的滚动轴承故障诊断方法[J]. 振动与冲击, 2012, 31(20): 143-146

PENG Chang;BO Lin;XIE Xiao-liang. Fault diagnosis method of rolling element bearings based on EEMD,measure-factor and fast kurtogram[J]. Journal of Vibration and Shock, 2012, 31(20): 143-146