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Volume 19 Issue 2
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2011  >  19(2): 120-123
SUN Tao, GAO Ai-jun, WANG Yi. An Automatic Recognition Method of Vibration Frequency for Underwater Vehicle Power System[J]. Journal of Unmanned Undersea Systems, 2011, 19(2): 120-123. doi: 10.11993/j.issn.1673-1948.2011.02.009
Citation: SUN Tao, GAO Ai-jun, WANG Yi. An Automatic Recognition Method of Vibration Frequency for Underwater Vehicle Power System[J]. Journal of Unmanned Undersea Systems, 2011, 19(2): 120-123. doi: 10.11993/j.issn.1673-1948.2011.02.009
shu

An Automatic Recognition Method of Vibration Frequency for Underwater Vehicle Power System

doi: 10.11993/j.issn.1673-1948.2011.02.009

  • The 705 Research Institute, China Shipbuilding Industry Corporation, Xi′an 710075, China

  • Received Date: 2010-03-10
  • Rev Recd Date: 2010-04-14
  • Publish Date: 2011-04-30
    Abstract
  • To satisfy the timely demand of vibration spectrum analysis for underwater vehicle power system in vibration test, on the basis of the signal spectrum feature and discrete Fourier transform(DFT)principle, an automatic vibration fre- quency recognition method is presented via zoom-FFT(fast Fourier transform)combining with peak search algorithm, and the corresponding modularized program is coded. The method uses zoom-FFT to calculate the exact measuring frequency of the power system periodic motivation, and utilizes peak search algorithm to extract the dominant frequency component in order to confirm the vibration source with the consistent degree of two kinds of frequencies. The application of the present method to simulated signal and real signal shows the analysis efficiency and accuracy are improved markedly.

     

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