挠性卫星姿态的角动量反馈控制

Angular momentum feedback control for flexible spacecraft

利用动量交换装置的角动量测量和反馈来实现带有挠性附件卫星姿态的稳定控制是一个重要问题。为此 ,本文给出了角动量反馈控制器 ,指出了控制器参数的选取方法 ,分析了姿态控制误差与角动量测量误差的关系。结果表明 ,角动量反馈控制方法不仅能够保证姿态控制的稳定性 ,而且能够有效提高姿态控制的稳定度 。

This paper deals with the stabilization of flexible spacecraft by using only the momentum exchange device. The angular momentum feedback controller is proposed, which realizes the angular velocity feedback for the flexible spacecraft through measuring and feedbacking the angular momentum of the momentum exchange device. The controller parameter selection method is given, and the relationship between the angular momentum measurement error and the angular rate control error is analyzed. Analytical and simulation studies show that the angular momentum feedback control is not only capable of promoting the stability of the flexible spacecraft, but also of great robustness.