The invention discloses an aircraft dynamic derivative test data processing method, which is applied to the field of aircraft test data processing, and comprises the following steps: obtaining a truncation signal; performing direct-current component filtering processing on a first torque signal and a first angular displacement signal in the truncated signal to obtain a second torque signal and a second angular displacement signal; processing the second torque signal and the second angular displacement signal to obtain a first amplitude estimation value and a first initial phase estimation value of a first harmonic component in the second torque signal, and a second amplitude estimation value and a second initial phase estimation value of the first harmonic component in the second angular displacement signal; obtaining a phase difference based on the first initial phase estimation value and the second initial phase estimation value; based on the phase difference, the first amplitude estimation value and the second amplitude estimation value, a pneumatic pitching damping torque derivative and a pneumatic pitching restoring torque derivative are obtained through calculation; according to the method, the noise influence can be effectively removed, and the accuracy of the pneumatic pitching damping torque derivative and the pneumatic pitching restoring torque derivative is improved.

    本发明公开了一种飞行器动导数试验数据处理方法,应用于飞行器试验数据处理领域,包括:获得截短信号;对截短信号中的第一力矩信号和第一角位移信号进行直流分量滤除处理获得第二力矩信号和第二角位移信号;对第二力矩信号和第二角位移信号进行处理获得第二力矩信号中第1次谐波分量的第一幅值估计值和第一初相位估计值,以及第二角位移信号中第1次谐波分量的第二幅值估计值和第二初相位估计值;基于第一初相位估计值和第二初相位估计值获得相位差;基于相位差、第一幅值估计值和第二幅值估计值计算获得气动俯仰阻尼力矩导数和气动俯仰恢复力矩导数;本方法可以有效的去除噪声影响,提高气动俯仰阻尼力矩导数和气动俯仰恢复力矩导数的准确性。


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    Title :

    Aircraft dynamic derivative test data processing method


    Additional title:

    一种飞行器动导数试验数据处理方法


    Contributors:
    CHEN PENG (author) / CHEN LILI (author) / LIU CHUNHUA (author) / WU SHUANG (author) / SU XIN (author)

    Publication date :

    2022-06-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung





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