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Bootstrap data methodology for sequential hybrid model building

  • US 7,277,838 B2
  • Filed: 08/26/2004
  • Issued: 10/02/2007
  • Est. Priority Date: 08/26/2004
  • Status: Active Grant
First Claim
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1. A method for modeling engine operation comprising the steps of:

  • 1. inputting a first plurality of sensory data from a gas turbine engine into a computer;

    2. partitioning a flight envelope into a plurality of sub-regions according to the steps of;

    3. selecting a first sensory parameter and a second sensory parameter,4. plotting each of said first plurality of sensory data by using said first sensory parameter as a first axis and said second sensory parameter as a second axis, and5. dividing said first axis and said second axis into a plurality of subdivisions to create a grid comprising a plurality of sub-regions;

    6. assigning said first plurality of sensory data into said plurality of sub-regions;

    7. generating an empirical model of at least one of said plurality of sub-regions;

    8. generating a statistical summary model for at least one of said plurality of sub-regions;

    9. inputting an additional plurality of sensory data from said gas turbine engine into said computer;

    10. partitioning said second plurality of sensory data into said plurality of sub-regions;

    11. generating a plurality of pseudo-data using said empirical model;

    12. concatenating said plurality of pseudo-data and said additional plurality of sensory data; and

    13. outputting using said computer an updated empirical model and an updated statistical summary model for at least one of said plurality of sub-regions.

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