基于MVMD能量熵和GWO-SVM的电机滚动轴承故障诊断

IF 0.7 Q4 ENGINEERING, MECHANICAL Journal of Vibroengineering Pub Date : 2023-08-01 DOI:10.21595/jve.2023.23046
Jianmeng Tang, Qiaoni Zhao
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引用次数: 0

摘要

在电机滚动轴承故障诊断中,振动信号分析是提取敏感故障特征的常用方法。本文提出了一种新的信号处理方法——多元变分模式分解(MVMD),用于提取电机滚动轴承的特征。对不同类别的电机滚动轴承状态信号进行了MVMD,分析了对分解效果影响较大的先验参数K值。以能量熵(EE)的形式对分解得到的每个分量进行测量,并通过支持向量机(SVM)分类器对测量到的特征信息进行分类和识别。同时,采用灰狼优化(GWO)对分类器网络的参数进行优化,以进一步提高识别精度。通过仿真结果表明,在电机滚动轴承不同负载和转速的情况下,该方案对电机正常工况、外圈故障、内圈故障和滚动元件故障的诊断率可以达到100%。
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Motor rolling bearing fault diagnosis based on MVMD energy entropy and GWO-SVM
For motor rolling bearing fault diagnosis, vibration signal analysis is a common method to extract sensitive fault characteristics. In this paper, a newly signal processing method, multivariate variational mode decomposition (MVMD), is proposed to extract features from motor rolling bearings. The MVMD was carried out on the motor rolling bearings state signals of different categories, and the prior parameter K value which had a great influence on the decomposition effect was analyzed. Each component obtained by decomposition was measured in the form of energy entropy (EE), and the measured feature information was classified and identified by support vector machine (SVM) classifier. Meanwhile, the grey wolf optimization (GWO) was used to optimize the parameters of the classifier network to further improve the recognition accuracy. Through the simulation results, it is found that the scheme can achieve 100 % effect on the diagnosis rate of normal working condition, outer ring fault, inner ring fault and rolling element fault under the condition of different load and speed of the motor rolling bearing.
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来源期刊
Journal of Vibroengineering
Journal of Vibroengineering 工程技术-工程:机械
CiteScore
1.70
自引率
0.00%
发文量
97
审稿时长
4.5 months
期刊介绍: Journal of VIBROENGINEERING (JVE) ISSN 1392-8716 is a prestigious peer reviewed International Journal specializing in theoretical and practical aspects of Vibration Engineering. It is indexed in ESCI and other major databases. Published every 1.5 months (8 times yearly), the journal attracts attention from the International Engineering Community.
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