Title:
BALL BEARING FAULT DETERMINATION METHOD AND APPARATUS, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/207337
Kind Code:
A1
Abstract:
A ball bearing fault determination method and apparatus, and a storage medium, relating to the technical field of rolling bearings. The ball bearing fault determination method comprises: acquiring vibration signals of a ball bearing, and on the basis of a wavelet packet decomposition method, performing noise cancellation processing on signals in each time period of the vibration signals, so as to obtain signals in each time period subjected to the noise cancellation processing (S100); by using short-time Fourier transform, performing time-frequency analysis on the signals in each time period, so as to obtain a time period in which a ball bearing fault occurs, and a fault frequency corresponding to the time period (S200); by using a Choi-Williams distribution-based time-frequency analysis method, performing refinement analysis on the signals in the time period in which the ball bearing fault occurs, and when the fault frequency comprises a fault characteristic frequency of the ball bearing, according to the fault characteristic frequency of the ball bearing, determining a fault duration corresponding to the fault characteristic frequency (S300); and according to the fault characteristic frequency of the ball bearing and the fault duration corresponding to the fault characteristic frequency, determining the fault type and the fault severity of the ball bearing (S400).
Inventors:
DU FEIPING (CN)
TAN YONGHUA (CN)
WANG CHUNMIN (CN)
TAN YONGHUA (CN)
WANG CHUNMIN (CN)
Application Number:
PCT/CN2023/079698
Publication Date:
November 02, 2023
Filing Date:
March 04, 2023
Export Citation:
Assignee:
XIAN AEROSPACE PROPULSION INST (CN)
International Classes:
G01M13/045
Foreign References:
| CN114565000A | 2022-05-31 | |||
| CN108168891A | 2018-06-15 | |||
| CN111178327A | 2020-05-19 | |||
| CN111581762A | 2020-08-25 | |||
| US20140172326A1 | 2014-06-19 |
Other References:
TAO,SHAOFEI: "Optimization of Matching Pursuit Algorithm and Its Application in Rolling Bearing Fault Diagnosis", CHINA MASTER'S THESES FULL-TEXT DATABASE (ENGINEERING SCIENCE AND TECHNOLOGY II), 15 July 2012 (2012-07-15)
Attorney, Agent or Firm:
BEIJING ZHIDI INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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