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Method and apparatus for vibration-based automatic condition monitoring of a wind turbine

  • US 8,066,486 B2
  • Filed: 12/02/2008
  • Issued: 11/29/2011
  • Est. Priority Date: 12/19/2007
  • Status: Active Grant
First Claim
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1. A method for vibration-based automatic condition monitoring of a wind turbine, comprising:

  • determining a set of vibration measurement values of the wind turbine;

    calculating a frequency spectrum of the set of vibration measurement values;

    calculating a cepstrum of the frequency spectrum;

    selecting at least one first quefrency in the cepstrum; and

    detecting an alarm condition based upon an amplitude of the cepstrum at the selected quefrency.

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