空间飞行器大角度姿态跟踪机动问题研究

研究了姿态跟踪机动问题。通过引入视线坐标系，将时变终端条件的控制问题转化为定边界的控制问题。建立了飞行器相对于视线坐标系的四元数姿态运动学模型，提供了由已知信息计算姿态四元数的函数关系，引入了气度欧拉角变换，基于拟欧拉角信号设计了跟踪机动控制律。通过对空间预警卫星监视低轨道飞行器问题的仿真，验证了设计的正确性。

The Research on High Attitude Tracking Maneuver of a Spacecraft

Maneuver of a spacecraft tracking a moving target is studied. The time variable boundary value is transferred into a fixed boundary value by introducing the view of sight coordinate. Attitude model is described with four dimensions. Quasi Euler angle is introduced to change the three axis coupling attitude control system into three perturbed double integrated control systems. A variable structure control law is designed based on quasi Euler angle and its rate. The method is verified to be correct by the simulation for the task that a forewarning satellite monitors a low orbital spacecraft.