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Model-based iterative estimation of gas turbine engine component qualities

  • US 20070118271A1
  • Filed: 11/18/2005
  • Published: 05/24/2007
  • Est. Priority Date: 11/18/2005
  • Status: Active Grant
First Claim
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1. A method of estimating quality parameters for a plurality of engine components of a gas turbine engine, the engine components having a plurality of sensors responsive to the engine component operation, the method comprising:

  • generating virtual sensor values and quality parameters with an engine model, the virtual sensor values corresponding to values from a plurality of sensors of the plurality of engine components;

    comparing the virtual sensor values to actual sensor values provided by the plurality of sensors to calculate a difference between the actual and virtual sensor values;

    amplifying the difference by a predetermined gain;

    generating a plurality of quality parameter deltas in response to the difference;

    iteratively updating the engine model by inputting a predetermined portion of the generated plurality of quality parameter deltas into the engine model;

    adjusting the embedded engine model for engine operating conditions; and

    repeating the steps of generating virtual sensor values, comparing the virtual sensor values, amplifying the difference, generating a plurality of quality parameter deltas and updating the embedded model.

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