The thrust control capability of a retrofit architecture for intelligent turbofan engine control and diagnostics is evaluated. The focus of the study is on the portion of the hierarchical architecture that performs thrust estimation and outer loop thrust control. The inner loop controls fan speed so the outer loop automatically adjusts the engine's fan speed command to maintain thrust at the desired level, based on pilot input, even as the engine deteriorates with use. The thrust estimation accuracy is assessed under nominal and deteriorated conditions at multiple operating points, and the closed loop thrust control performance is studied, all in a complex real-time nonlinear turbofan engine simulation test bed. The estimation capability, thrust response, and robustness to uncertainty in the form of engine degradation are evaluated.


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    Title :

    Evaluation of an Outer Loop Retrofit Architecture for Intelligent Turbofan Engine Thrust Control


    Contributors:

    Conference:

    42nd Joint Propulsion Conference and Exhibit ; 2006 ; Sacramento, CA, United States


    Publication date :

    2006-10-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Evaluation of an Outer Loop Retrofit Architecture for Intelligent Turbofan Engine Thrust Control

    Litt, J. / Sowers, T. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2006




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