The linear model of an aero engine is effective in a small range of the neighborhood of equilibrium points. According to this problem, the identification method for the parameter uncertain linear model of the aero engine was proposed. The identification problem is solved by calculating nonlinear programming. Considering the parameter uncertainty of the model is the critical point of this research during the optimization process. A parameter uncertain model of an aero engine can be obtained, which has large use range. This method is used for DGEN380 aero engine. The two parameters, VDD and VE, are defined for describing error range. Compared with experimental data, the uncertain model of DGEN 380 can simulate the real state of DGEN380 within 1% error range when ΔPLA<22%. Compared with another conventional method of identification (recursive least squares), the parameter uncertain model, established by the method of this research, has a broad application area through parameter uncertainty of the model.


    Access

    Download


    Export, share and cite



    Title :

    Study on Identification Method for Parameter Uncertainty Model of Aero Engine


    Contributors:
    Jie Bai (author) / Shuai Liu (author) / Wei Wang (author)


    Publication date :

    2019




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Reliable model aero engine

    Engineering Index Backfile | 1933


    Aero-engine nacelle and aero-engine

    LIU ZHAO / XU YAN / DING CHEN | European Patent Office | 2022

    Free access

    Aero-engine connecting structure and aero-engine

    LI JING / XU BIN / BAI TAO et al. | European Patent Office | 2021

    Free access

    Aero engine development

    Engineering Index Backfile | 1935


    New aero engine

    Engineering Index Backfile | 1936