• 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 16 Issue 5
Oct.  2003
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Article Contents
TANG Yi-ke, LIANG Feng. Application of Time-Frequency Analysis Method to Start-upProcess Analysis of High-Pressure Hydraulic Pump[J]. Journal of Southwest Jiaotong University, 2003, 16(5): 525-527.
Citation: TANG Yi-ke, LIANG Feng. Application of Time-Frequency Analysis Method to Start-up Process Analysis of High-Pressure Hydraulic Pump[J]. Journal of Southwest Jiaotong University, 2003, 16(5): 525-527.

Application of Time-Frequency Analysis Method to Start-up Process Analysis of High-Pressure Hydraulic Pump

  • Publish Date: 25 Oct 2003
  • The determination of time discrimination and frequency discrimination and the selection of a window function in the short-term Fourier transform(STFT) were discussed to analyze the vibrational signals from a high-pressure hydraulic pump unit. This method based on the STFT overcomes the shortcoming of the fast Fourier transform. The analysis result shows that the application of time-frequency analysis method to the start-up process analysis of centrifugal type of high-pressure hydraulic pumps can not only exactly determine the change of each individual frequency in the process, but also find out some external interfering signals to judge whether a pump is working normally or not and the reason for its fault.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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