The invention discloses an angular momentum management method based on a vector electric thruster, and the method comprises the steps: building a linear dynamic model of the angular momentum management of the vector electric thruster according to the geometric structure, installation position, installation matrix and working combination of the vector electric thruster; thirdly, estimating a control torque error term in real time through closed-loop feedback, performing compensation in the process of calculating angular momentum needing to be managed, and calculating a vector electric thruster rotation angle instruction through hysteresis control and a pseudo-inverse distribution algorithm; and finally, giving an equal-ratio reduction processing mode when the vector electric thruster exceeds the amplitude limiting threshold of the imbalance mechanism. Through linear simplification of a kinetic model, the calculation amount of the angular momentum management method is reduced, the angular momentum management precision is improved by introducing control torque error closed-loop estimation, the vector adjustment frequency and adjustment amplitude are reduced through hysteresis control and pseudo-inverse distribution, and the influence on attitude and orbit control precision is reduced.

    本发明公开了一种基于矢量电推进器角动量管理方法,首先,依据矢量电推进器几何结构、安装位置、安装矩阵及工作组合的情况下,建立了矢量电推进器角动量管理的线性化动力学模型;之后,通过闭环反馈实时估计控制力矩误差项,并在计算需管理角动量过程中给予补偿,通过滞环控制与伪逆分配算法计算矢量电推进器转角指令;最后,给出了在矢量电推进器超过失调机构限幅阈值的等比缩减处理方式。本发明通过对动力学模型的线性简化,降低了角动量管理方法的计算量,并考虑引入控制力矩误差闭环估计提高了角动量管理精度,滞环控制与伪逆分配降低矢调调整次数与调整幅度,减少对姿态与轨道控制精度影响。


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    Title :

    Angular momentum management method based on vector electric thruster


    Additional title:

    一种基于矢量电推进器的角动量管理方法


    Contributors:
    JIANG SONG (author) / WU GUOQIANG (author) / WANG HAOGUANG (author) / JIANG GUIZHONG (author) / SHEN YUAN (author) / LIN XIA (author) / WANG SHEN (author)

    Publication date :

    2022-11-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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