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Complex signal decomposition and modeling

  • US 6,957,172 B2
  • Filed: 03/08/2001
  • Issued: 10/18/2005
  • Est. Priority Date: 03/09/2000
  • Status: Expired due to Term
First Claim
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1. A method for providing a reference library of representative sets of correlated values for use in monitoring a system using an empirical model, comprising the steps of:

  • receiving a variable signal measuring a parameter of said system during operation of said system in a known mode;

    decomposing said variable signal into component signals;

    sampling said component signals periodically to provide successive sets of correlated values; and

    selecting some of said sets of correlated values for inclusion in said reference library and including a particular set of correlated values if said particular set includes a minimum or a maximum value of one of the correlated values, as compared to all like values in all the sets of correlated values.

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