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Dynamic, non-uniform clock for resampling and processing machine signals

  • US 5,825,657 A
  • Filed: 02/23/1996
  • Issued: 10/20/1998
  • Est. Priority Date: 02/23/1996
  • Status: Expired due to Fees
First Claim
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1. A method for capturing and analyzing machine signals having at least one quasi-periodic signal component, comprising the steps of:

  • a) placing at least one sensor on a machine;

    b) obtaining initial machine signal data from said at least one sensor;

    c) conditioning said initial machine signal data to remove aliasing components and produce conditioned signal data;

    d) digitizing said conditioned signal data to produce uniformly sampled data;

    e) processing said uniformly sampled data to produce modified machine signal data having a non-uniform sampling rate proportional in frequency to said quasi-periodic signal component, the rate of change of which is less than a cutoff value; and

    f) analyzing said modified machine signal data for the purpose of determining the operating condition and performance of the machine.

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