• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 30 Issue 6
Dec.  2017
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Article Contents
YONG J. Yuan, HUANG Xiaoxia, TANG Yuantian. Real-time Detection of Defects in Train Bearings Based on Analysis of Signal Characteristics in Time-Frequency Domains[J]. Journal of Southwest Jiaotong University, 2017, 30(6): 1182-1187. doi: 10.3969/j.issn.0258-2724.2017.06.019
Citation: YONG J. Yuan, HUANG Xiaoxia, TANG Yuantian. Real-time Detection of Defects in Train Bearings Based on Analysis of Signal Characteristics in Time-Frequency Domains[J]. Journal of Southwest Jiaotong University, 2017, 30(6): 1182-1187. doi: 10.3969/j.issn.0258-2724.2017.06.019

Real-time Detection of Defects in Train Bearings Based on Analysis of Signal Characteristics in Time-Frequency Domains

doi: 10.3969/j.issn.0258-2724.2017.06.019
  • Received Date: 05 May 2016
  • Publish Date: 25 Dec 2017
  • To realize the real-time monitoring and quick diagnosis of defects in rolling trainbearings, an approach is proposed based on the time and frequency analysis of signal characteristics, especially the combination of time-domain characteristics analysis and resonance demodulation based on wavelet transforms. A real-time detection system is set up for detecting train bearing defects including a sensor data acquisition module, a sound diagnostic module, data storage and an output module. The following tests for bearings were conducted for comparison:normal bearings, bearings with inner-ring defects, and bearings with inner-ring and roller defects. The results showed that the analysis of time-domain characteristics can be used to determine bearings were faulty prior to operation. The resonance demodulation based on wavelet transform extracted the inner-ring defect frequency and the roller defect frequency of 35 Hz and 23 Hz, respectively. The stability and reliability of the real-time detection system are verified.

     

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