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A Novel Bearing Fault Diagnosis Method Based on LMD and Wavelet Packet Energy Entropy

  • Xiumei Li , Yong Liu , Huimin Zhao , Wu Deng EMAIL logo and Yannan Sun
Published/Copyright: October 24, 2017

Abstract

Rolling element bearings faults may lead to fatal breakdown of machines. Therefore, it is significant to be study bearings diagnosis, and the vibration-based methods have received intensive study because vibration signals collected from bearings carry rich information on machine health conditions, and it is possible to obtain vitalcharacteristic information from the vibration signals through using signal processing techniques. This paper proposes a novel vibration-based diagnosis method about bearing faults, first, a new pattern recognition method is proposed to diagnose bearing faults through using the interval value of the spectral peak frequency in the frequency domain; second, vibration signals of different parts faults of the bearings will be processed by different algorithm for precisely extracting the fault characteristics; and third, in order to extract transient characteristics from a noisy signal, the filter need to be developed and to further improve the signal-to-noise ratio (SNR), band pass filter is designed based on the PSD of vibration signals in this paper. The vibration signals collected from rolling element bearings are used to demonstrate the performance of the proposed method, andthe results verify the effectiveness of the method in extracting fault characteristics and diagnosing faults of rolling element bearings.

Funding statement: National Natural Science Foundation of China, (Grant/Award Number: ‘51475065’, ‘51605068’, ‘61771087’, ‘U1433124’).

Acknowledgments

The authors would like to thank all the reviewers for their constructive comments. This research was supported by Artificial Intelligence Key Laboratory of SiChuan Province (2017RYY03),  the National Natural Science Foundation of China (51475065, 51605068, 61771087, U1433124), Open Project Program of Sichuan Provincial Key Lab of Process Equipment and Control (GK201613), Open Project Program of the Traction Power State Key Laboratory of Southwest Jiaotong University (TPL1705), Science and Technology Project of Liaoning Provincial Department of Education (JDL2016030). The program for the initialization, study, training, and simulation of the proposed algorithm in this article was written with the tool-box of MATLAB 2010b produced by the Math-Works, Inc.

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Received: 2017-5-8
Accepted: 2017-10-13
Published Online: 2017-10-24

© 2017 Walter de Gruyter GmbH, Berlin/Boston

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