[1]王涛,张 兵,孙 琦. 基于EWT-SVD 方法的高速列车滚动轴承故障诊断[J].机车电传动,2020,(01):1.[doi:10.13890/j.issn.1000-128x.2020.01.112]
 WANG Tao,ZHANG Bing,SUN Qi. Fault Diagnosis of High-speed Train Rolling Bearings Based on EWT-SVD Method[J].Electric Drive for Locomotives,2020,(01):1.[doi:10.13890/j.issn.1000-128x.2020.01.112]
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 基于EWT-SVD 方法的高速列车滚动轴承故障诊断()
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机车电传动[ISSN:1000-128X/CN:43-1125/U]

卷:
期数:
2020年01期
页码:
1
栏目:
出版日期:
2020-01-10

文章信息/Info

Title:
 Fault Diagnosis of High-speed Train Rolling Bearings Based on EWT-SVD Method
作者:
 王涛张 兵孙 琦
 (西南交通大学牵引动力国家重点实验室,四川 成都 610031)
Author(s):
 WANG Tao ZHANG Bing SUN Qi
 ( State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, Sichuan 610031, China )
关键词:
 故障诊断 滚动轴承EWT高速列车峭度指标SVD仿真
Keywords:
 fault diagnosis rolling bearing empirical wavelet transform (EWT) hig-speed train kurtosis coefficient singular value decomposition(SVD) simulation
分类号:
U292.91+4;U260.331+.2
DOI:
10.13890/j.issn.1000-128x.2020.01.112
文献标志码:
A
摘要:
 针对高速列车齿轮箱滚动轴承早期故障特征提取困难的情况,提出了基于经验小波变换(Empirical Wavelet Transform,EWT)和奇异值分解(Singular value decomposition, SVD) 的轴承故障诊断方法。首先对信号进行EWT 变换得到各阶固有模态分量,然后计算各阶固有模态分量的峭度值并选取较大峭度值对应的分量。将选取的分量构造矩阵进行正交化奇异值分解,选择合适的阶数重构信号,最后对重构信号进行Hilbert 包络解调分析。分别对仿真信号和滚动轴承发生外环故障进行分析,可以较为清晰地看到滚动轴承故障特征。研究结果表明,结合EWT、峭度系数和SVD 的诊断方法可以准确、快速地提取轴承故障信息,从而可以对滚动轴承进行有效诊断。
Abstract:
 Aiming at the difficulty in extracting early fault features of high-speed train gearbox rolling bearings, bearings fault diagnosis method based on empirical wavelet transform (EWT) and singular value decomposition (SVD) was proposed. Firstly, EWT was used to decompose the vibration signal into intrinsic modal components. Then the kurtosis of the intrinsic modal components was calculated and some of the intrinsic modal components were selected by the rule of kurtosis. The hankel matrix, which was constructed with the intrinsic modal components, was orthogonally executed through SVD. At last, the Hilbert envelope demodulation was adopted with the new signal to detect the fault information. Through analyzing the simulation signal and the outer vibration signal of fault rolling bearing respectively, the characteristics frequency could be clearly extracted. The results indicated that the diagnosis method of EWT and kurtosis coefficient and SVD could accurately and quickly extract the bearings fault information, so the rolling bearings can be diagnosed effectively.

参考文献/References:

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备注/Memo

备注/Memo:
 作者简介:王 涛(1995—),男,硕士研究生,主要研究方向为旋转件故障诊断和信号分析。
更新日期/Last Update: 2020-01-09