Time-Shift Multiscale Fuzzy Entropy and Laplacian Support Vector Machine Based Rolling Bearing Fault Diagnosis

被引:27
作者
Zhu, Xiaolong [1 ,2 ]
Zheng, Jinde [1 ,2 ]
Pan, Haiyang [1 ]
Bao, Jiahan [1 ,2 ]
Zhang, Yifang [1 ,2 ]
机构
[1] Anhui Univ Technol, Sch Mech Engn, Maanshan 243032, Peoples R China
[2] Minist Educ, Engn Res Ctr Hydraul Vibrat & Control, Maanshan 243032, Peoples R China
来源
ENTROPY | 2018年 / 20卷 / 08期
基金
中国国家自然科学基金;
关键词
multiscale entropy; fuzzy entropy; time-shift multiscale fuzzy entropy; rolling bearing; fault diagnosis; Laplacian support vector machine; APPROXIMATE ENTROPY; SAMPLE ENTROPY; IMAGE CLASSIFICATION; COMPLEXITY; SERIES;
D O I
10.3390/e20080602
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Multiscale entropy (MSE), as a complexity measurement method of time series, has been widely used to extract the fault information hidden in machinery vibration signals. However, the insufficient coarse graining in MSE will result in fault pattern information missing and the sample entropy used in MSE at larger factors will fluctuate heavily. Combining fractal theory and fuzzy entropy, the time shift multiscale fuzzy entropy (TSMFE) is put forward and applied to the complexity analysis of time series for enhancing the performance of MSE. Then TSMFE is used to extract the nonlinear fault features from vibration signals of rolling bearing. By combining TSMFE with the Laplacian support vector machine (LapSVM), which only needs very few marked samples for classification training, a new intelligent fault diagnosis method for rolling bearing is proposed. Also the proposed method is applied to the experiment data analysis of rolling bearing by comparing with the existing methods and the analysis results show that the proposed fault diagnosis method can effectively identify different states of rolling bearing and get the highest recognition rate among the existing methods.
引用
收藏
页数:15
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