Application of SVD Based on Correlated Singular Value Ratio in Bearing Fault Diagnosis

被引:0
|
作者
Li H. [1 ,2 ]
Liu T. [2 ]
Wu X. [2 ,3 ]
Li S. [1 ]
机构
[1] State Key Laboratory of Public Big Data, Guizhou University, Guiyang
[2] Yunnan Provincial Key Laboratory of Advanced Equipment Intelligent Manufacturing Technology, Kunming University of Science and Technology, Kunming
[3] Yunnan Vocational College of Mechanical and Electrical Technology, Kunming
关键词
Cross-correlation coefficient; Hankel matrix structure; Reconstructed component determination; Rolling bearing; Singular value decomposition; Singular value ratio;
D O I
10.3901/JME.2021.21.138
中图分类号
学科分类号
摘要
The SVD method based on Hankel matrix is widely used in signal processing and fault diagnosis. Its noise reduction performance is affected by the selected reconstruction component, the structure of the Hankel matrix, and the number of points of the analysis data. Based on this, a systematic research is carried out, and the SVD based on correlated singular value ratio (C-SVR SVD) is proposed, and successfully applied to bearing fault diagnosis. First, for the problem of determining the reconstruction components of SVD, a method combining singular value ratio (SVR) and cross-correlation coefficient is proposed; secondly, the structure of Hankel matrix is studied, and a structure optimization method based on SVR and kurtosis indicator is proposed. The structure optimization method of the indicator. Then, the number of analyzed data points was analyzed and discussed, and constraints were given. Finally, the C-SVR SVD method is applied to the analysis of the bearing fault simulation signal and the actual bearing fault signal, which verifies the effectiveness and superiority of the C-SVR SVD method. © 2021 Journal of Mechanical Engineering.
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页码:138 / 149
页数:11
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