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Abnormality Diagnosing System For Mechanical Equipment

  • US 20080033695A1
  • Filed: 10/17/2005
  • Published: 02/07/2008
  • Est. Priority Date: 10/18/2004
  • Status: Active Grant
First Claim
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1. An abnormality diagnosing system for a mechanical equipment, which detects sounds or vibrations generated by a mechanical equipment, analyzes thus detected signal and diagnoses an abnormality for a bearing or a bearing related member in the mechanical equipment, comprising:

  • an envelope processor that obtains an envelope for the detected signal;

    a FFT unit that transforms the envelope obtained by the envelope processor into a frequency spectrum;

    a peak detector that smoothes the frequency spectrum obtained by the FFT unit by performing a moving average calculation process and detects peaks in the frequency spectrum; and

    a diagnosis processor that diagnoses an abnormality based on the peaks in the frequency spectrum detected by the peak detector.

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