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Time-frequency ridge index algorithm for gearbox under variable speed based on dynamic path planning of barycenter
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Bo-lin ZHANG1, Shu-ting WAN1, Xiao-yan ZHAO1, Xiong ZHANG1, Xiao-hui GU2
Journal of Vibration Engineering | 2024, 37(6) : 1077 - 1088
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Journal of Vibration Engineering | 2024, 37(6): 1077-1088
Time-frequency ridge index algorithm for gearbox under variable speed based on dynamic path planning of barycenter
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Bo-lin ZHANG1, Shu-ting WAN1, Xiao-yan ZHAO1, Xiong ZHANG1, Xiao-hui GU2
Affiliations
  • 1Hebei Key Laboratory of Electric Machinery Health Maintenance & Failure Prevention，North China Electric Power University，Baoding 071003，China
  • 2State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures， Shijiazhuang Tiedao University，Shijiazhuang 050043，China
Published: 2024-06-28 doi: 10.16385/j.cnki.issn.1004-4523.2024.06.018
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The paper proposes a time-frequency ridge index algorithm for gearboxes under variable speed conditions，based on Dynamic Path Planning of Barycenter （DPPB）. This algorithm addresses the challenge of estimating the instantaneous frequency of signals in a high-noise environment. The algorithm builds upon the analysis of the Multi-Path Matching Pursuit （MMP） ridge index algorithm and its limitations under high noise. By adding windows to the ridge set obtained by the MMP algorithm，a ridge barycenter sparse matrix of the signal is constructed. A dynamic path planning function is then designed for the barycenter sparse matrix to index the barycenters on the ridge line. The optimal time-frequency ridge line is calculated based on the values of the ridge line cost function. The similarity coefficient Ra and confidence σRa are used as measures of the ridge extraction effect. Simulations and experiments indicate that the DPPB algorithm can effectively extract the time-frequency ridge of signals in high-noise environments，and it is more reliable and robust than the peak index algorithm and the MMP algorithm under various noise intensities.

fault diagnosis  /  gearbox  /  dynamic path planning barycenter （DPPB）  /  time-frequency ridge index  /  multipath matching pursuit （MMP）  /  time-frequency analysis
Bo-lin ZHANG, Shu-ting WAN, Xiao-yan ZHAO, Xiong ZHANG, Xiao-hui GU. Time-frequency ridge index algorithm for gearbox under variable speed based on dynamic path planning of barycenter[J]. Journal of Vibration Engineering, 2024 , 37 (6) : 1077 -1088 . DOI: 10.16385/j.cnki.issn.1004-4523.2024.06.018
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2024.06.018
  • Receive Date：2022-08-07
  • Online Date：2026-02-09
  • Published：2024-06-28
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  • Received：2022-08-07
  • Revised：2022-11-16
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Affiliations
    1Hebei Key Laboratory of Electric Machinery Health Maintenance & Failure Prevention，North China Electric Power University，Baoding 071003，China
    2State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures， Shijiazhuang Tiedao University，Shijiazhuang 050043，China
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