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Method and apparatus for selecting condition indicators in determining the health of a component

  • US 20030065482A1
  • Filed: 12/04/2001
  • Published: 04/03/2003
  • Est. Priority Date: 05/24/2001
  • Status: Active Grant
First Claim
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1. A method executed in a computer system for ranking condition indicators used in determining a health indicator for a component comprising:

  • determining a first set of a plurality of said condition indicators;

    determining a covariance matrix corresponding to said plurality of condition indicators;

    determining a transformation matrix that whitens the covariance matrix;

    using said whitening matrix to determine differences between said first plurality of condition indicators and expected values for said condition indicators belonging to a health class, each health class having a corresponding health indicator; and

    selecting a portion of said plurality of condition indicators in accordance with those condition indicators have the smallest of said differences.

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