The invention discloses an aircraft engine speed identification method and system. The method comprises the steps of obtaining an actual measurement signal frequency reference value and an actual measurement signal sampling rate, and carrying out initialization on signal parameters according to the actual measurement signal frequency reference value and the actual measurement signal sampling rate;obtaining an expected signal value, calculating an estimated signal value according to the initialized signal parameters, and calculating an error value between the expected signal value and the estimated signal value; calculating a signal frequency coefficient according to the error value, and iteratively updating the signal parameters according to the error value and the signal frequency coefficient until the error value is converged so as to identify the revolution of the aircraft engine according to the converged error value. High-precision identification can be carried out on the enginespeed under the condition that external equipment on the engine is not increased, so that stable operation of the system is guaranteed.

    本发明公开了一种飞机发动机转速辨识方法及系统,其中方法包括:获取实测信号频率基准值和实测信号采样率,并根据实测信号频率基准值和实测信号采样率对信号参数进行初始化;获取期望信号值,并根据初始化后的信号参数计算估计信号值,以及计算期望信号值和估计信号值之间的误差值;根据误差值计算信号频率系数,并根据误差值和信号频率系数对信号参数进行迭代更新,直至误差值收敛,以便根据收敛后的误差值进行飞机发动机转数的辨识;能够在不增加机上外部设备的情况下,对发动机转速进行高精度的辨识,以保证系统的稳定运行。


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    Titel :

    Aircraft engine speed identification method and system


    Weitere Titelangaben:

    飞机发动机转速辨识方法及系统


    Beteiligte:
    YU HAOXIN (Autor:in) / DAI HAI (Autor:in) / LI RONG (Autor:in)

    Erscheinungsdatum :

    2020-09-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



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