Short-Period Doppler Correction Method of Rolling Bearing Based on Center Time of Acoustic Signal
CSTR:
Author:
Affiliation:

Clc Number:

U279

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The trackside acoustic detection systems are usually located on the sides of the railway, which causes high speed motion between the train and the acoustic acquisition device relatively. As a result, the collected sound source signals are interfered by severe Doppler distortion, which brings great challenges to the acoustic detection of train running components. Aiming at this problem, a short-period Doppler correction method based on center time was proposed. First, the distortion at the center time of the acoustic signal was obtained according to the Morse acoustic theory. Then, the optimal center time was obtained by matching the time-frequency curve of the distortion signal and the original signal. Finally, the received acoustic signal was corrected based on the optimal center time point, and the effectiveness and correctness of the method were verified through simulation and experiment.

    Reference
    Related
    Cited by
Get Citation

孙亚丽,李花,赵兴,费继友.列车轴承声学信号中心时间获取及短周期校正方法研究[J].华东交通大学学报英文版,2021,38(2):110-115.
Sun Yali, Li Hua, Zhao Xing, Fei Jiyou. Short-Period Doppler Correction Method of Rolling Bearing Based on Center Time of Acoustic Signal[J]. JOURNAL OF EAST CHINA JIAOTONG UNIVERSTTY,2021,38(2):110-115

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:
  • Revised:
  • Adopted:
  • Online: June 18,2021
  • Published:
Article QR Code