仅地心矢量测量的卫星转对地定向姿态控制方法

摘要： 针对角速度过大且无其陀螺测量的姿态异常情况，开展仅依赖地心矢量的对地姿态快速恢复控制方法研究.基于地心矢量测量信息给出了天平角及天平角矢量定义，提出一种综合天平角抑制与能量耗散的对地姿态恢复控制方法；针对具有星体角动量偏置的闭环控制非线性系统，采用几何方法求解获取各平衡点，并由其特性分析表明通过参数合理选取可使得期望稳定对地姿态为系统唯一稳定平衡点；利用数学仿真方法验证了所提出方法的有效性.

Earth Oriented Attitude Recovery Control Method of Satellites with Geocentric Vector Measurements Only

Abstract： For the earth orienting satellite attitude anomaly with large angular rates without gyro measurement, the problem of the attitude rapid recovery only utilizing geocentric vector measurements is investigated. Firstly, a scale pendulum angle and its corresponding vector are defined based on the geocentric vector measurement, and a novel earth oriented attitude recovery control method is proposed integrating the scale pendulum angle magnitude inhibiting with energy dissipating. Furthermore, all equilibria are obtained for the momentum biased closed loop nonlinear system via applying the geometric approach, and equilibrium characteristic analysis indicates that the desired earth orienting stabilizing attitude state is to be the unique stable equilibrium with suitable parameter selection. Finally, the effectiveness of the proposed method is demonstrated by numerical simulations.