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Methods for condition monitoring and system-level diagnosis of electro-mechanical systems with multiple actuating components operating in multiple regimes

  • US 6,539,343 B2
  • Filed: 02/03/2000
  • Issued: 03/25/2003
  • Est. Priority Date: 02/03/2000
  • Status: Expired due to Term
First Claim
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1. A method for constructing time-frequency models of non-stationary signals comprising the steps:

  • collecting a plurality of training data from at least one sensor embedded in a system of interest, wherein the training data includes an operating fault of the system;

    extracting wavelet coefficient features from the training data by performing wavelet analysis;

    constructing a signal template of the operating fault using the wavelet coefficients.

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