基于周期变化惯量积的主动章动控制方法研究

偏置动量卫星姿态控制过程中会产生章动运动。若星体俯仰轴与其它轴存在固定的惯量积，则可以利用偏置动量轮有效地克服章动。针对转动惯量周期性变化的偏置动量卫星，提出一种通过在动量轮的控制律中引入时变的滚动轴信息，利用动量轮克服滚动轴／偏航轴章动影响的方法。通过数学仿真验证了该算法的有效性。

Study on Periodically Varying Product-of-Inertia Based Active Nutation Control

Nutation frequently occurs during the attitude control of momentum-bias satellites.It can be eliminated effectively by the wheel if the products of inertia of the pitch axis and other axes are constant.In this paper,time-varying roll information is integrated into the wheel control law.And a method of the wheel control is presented to overcome influences of nutation on roll and yaw axis.Finally,numerical simulations have been done to demonstrate the validity of this method.