Journal of Northeastern University(Natural Science) ›› 2025, Vol. 46 ›› Issue (3): 20-27.DOI: 10.12068/j.issn.1005-3026.2025.20239058

• Information & Control • Previous Articles     Next Articles

Fault Diagnosis Method for Rolling Bearings Based on WP-TRP

Na WANG1,2(), Yue-lei CUI1, Liang LUO1, Zi-cong WANG1   

  1. 1.School of Control Science and Engineering,Tiangong University,Tianjin 300387,China
    2.Tianjin Key Laboratory of Intelligent Control of Electrical Equipment,Tiangong University,Tianjin 300387,.
  • Received:2023-10-11 Online:2025-03-15 Published:2025-05-29
  • Contact: Na WANG
  • About author:WANG Na E-mail: wangna@tiangong.edu.cn

Abstract:

In fault diagnosis, the traditional time-frequency domain methods are easily affected by subjective factors while being used for feature extraction, so that the redundancy emerges. Deep learning algorithm is highly dependent on training data and has computation complexity. Fault diagnosis method for rolling bearings based on wavelet packet-thresholdless recurrence plot (WP-TRP)is proposed by combining time with frequency domains. Firstly, the decreasing information entropy criterion is developed to overcome the subjectivity of wavelet packet decomposition for acquisition of more accurate time-frequency feature. On this basis, the idea of thresholdless recurrence plot is introduced to extract the initial time domain feature. Moreover, by adopting the singular value decomposition to decrease the redundant feature, the computational efficiency can be increased. Secondly, the marine predator algorithm is introduced to obtain the optimal parameters of supporting vector machine, by which the more accurate classification can be realized. Finally, the effectiveness of the presented method is verified by using the simulation on the benchmark rolling bearing datasets.

Key words: fault diagnosis, wavelet packet decomposition, information entropy, thresholdless recurrence plot(TRP), singular value decomposition, marine predator algorithm

CLC Number: