基于均值包络ITD和谱峭度的特征频率提取方法

张淑清; 董玉兰; 张立国; 严冰; 黄文静; 徐剑涛; 贺朋

doi:10.3969/j.issn.1000-1158.2017.05.17

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计量学报 ›› 2017, Vol. 38 ›› Issue (5) : 598-601. DOI: 10.3969/j.issn.1000-1158.2017.05.17

力学计量

基于均值包络ITD和谱峭度的特征频率提取方法

张淑清,董玉兰,张立国,严冰,黄文静,徐剑涛,贺朋

作者信息 +

Feature Frequency Extraction Method Based on Mean Envelope ITD and Spectral Kurtosis

ZHANG Shu-qing,DONG Yu-lan,ZHANG Li-guo,YAN Bing,HUANG Wen-jing,XU Jian-tao,HE Peng

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文章历史 +

摘要

提出基于均值包络本征时间尺度分解(ITD)和谱峭度的特征频率提取方法。用于轴承故障诊断中,振动信号经均值包络ITD分解和重构,通过谱峭度选取故障共振频率带,最后比较包络谱与特征频率做出故障诊断。对美国凯斯西储大学滚动轴承数据的处理结果证明,该方法得到的谱线更加明显,诊断更加准确。

Abstract

A feature frequency extraction method based on mean envelope ITD and spectral kurtosis is proposed.Was applied to the bearing fault diagnosis, the vibration signal was first decomposed and reconstructed by the mean ITD. Then the resonance frequency band was selected automatically through the spectrum kurtosis. Finally, the bearing fault could be diagnosed by comparing the envelope spectrum and the characteristic frequency. The analysis result to the data from Case Western Reserve University bearing center and real project proves that it could get more obvious spectrum and more accurate diagnosis by the mean envelope ITD and spectral kurtosis method.

导出引用

张淑清,董玉兰,张立国,严冰,黄文静,徐剑涛,贺朋. 基于均值包络ITD和谱峭度的特征频率提取方法[J]. 计量学报. 2017, 38(5): 598-601 https://doi.org/10.3969/j.issn.1000-1158.2017.05.17

ZHANG Shu-qing,DONG Yu-lan,ZHANG Li-guo,YAN Bing,HUANG Wen-jing,XU Jian-tao,HE Peng. Feature Frequency Extraction Method Based on Mean Envelope ITD and Spectral Kurtosis[J]. Acta Metrologica Sinica. 2017, 38(5): 598-601 https://doi.org/10.3969/j.issn.1000-1158.2017.05.17

中图分类号： TB936

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