The invention provides a micro thrust on-orbit estimation method using satellite attitude change, which comprises the following steps: acquiring satellite attitude angular velocity data, momentum wheel angular momentum data, aerodynamic moment data, residual magnetic moment data, gravity gradient moment data and sunlight pressure moment data at each sampling moment; obtaining a thrust moment estimation relational expression according to the attitude kinetic equation, and calculating a thrust moment estimation value at each sampling moment; according to the relation between the thrust torque and the included angle between the thrust, the thrust direction and the three axes of the body coordinate system and the coordinate of the thrust center in the body coordinate system, the thrust estimated value of each sampling moment is calculated, the thrust estimated values of all the sampling moments are averaged, and the estimated value of the thrust of the thruster is obtained. According to the micro-thrust on-orbit estimation method based on the satellite attitude change, the thrust is estimated based on a high-precision attitude kinetic equation, the method is suitable for micro-thruster on-orbit test thrust estimation from the hundred-micro-Newton magnitude to the hundred-milliNewton magnitude, and the method has the advantages of being simple, rapid and high in precision.

    本发明提供一种利用卫星姿态变化的微小推力在轨估计方法,包括,获取每一采样时刻的卫星姿态角速度数据、动量轮角动量数据、气动力矩数据、剩磁力矩数据、重力梯度力矩数据、太阳光压力矩数据;根据姿态动力学方程获得推力力矩估计关系式,计算各采样时刻推力力矩估计值;根据推力力矩与推力、推力方向和体坐标系三个轴的夹角及推力中心在体坐标系坐标的关系,计算每一采样时刻的推力估计值,对所有采样时刻的推力估计值进行平均,得到推力器推力的估计值。本发明的利用卫星姿态变化的微小推力在轨估计方法,基于高精度的姿态动力学方程估计推力,适合百微牛量级至百毫牛量级的微推力器在轨试验推力预估,具有简单、快速、精度高的特点。


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    Titel :

    Micro-thrust on-orbit estimation method based on satellite attitude change


    Weitere Titelangaben:

    一种利用卫星姿态变化的微小推力在轨估计方法


    Beteiligte:
    ZHOU WEIJING (Autor:in) / CHANG HAO (Autor:in) / YE JIFEI (Autor:in) / WEN MING (Autor:in) / LI NANLEI (Autor:in)

    Erscheinungsdatum :

    12.03.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64G Raumfahrt , COSMONAUTICS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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