基于特征模型的失效航天器消旋控制

失效航天器一般有复杂的运动和较大的角速度，采用机械臂直接抓捕目标容易导致非预期碰撞，如果先采用接触式消旋操作降低目标角速度，会大大降低服务卫星抓捕目标的难度。针对空间翻滚非合作目标的接触式消旋控制存在接触动力学模型不确定性的问题，提出了一种基于特征模型的自适应控制方法。首先通过接触式消旋的物理机理分析，建立消旋系统动力学模型；进一步在动力学特性分析基础上构建描述接触碰撞后目标角速度的特征模型，并确定模型参数范围；然后基于该模型设计黄金分割自适应控制律。仿真结果表明，该方法有效克服了消旋过程中接触碰撞模型存在的不确定性，并且消旋速度快且消旋后的残余角速度小。

Characteristic model-based detumbling control for failure spacecraft

Failure spacecraft generally have complex motions and large angular velocities. Using a robotic arm to directly capture the target is likely to cause unexpected collisions. If the contact detumbling operation is first used to reduce the target angular velocity, it will greatly reduce the difficulty for the service satellite to capture the target. Aiming at the uncertainty problems in contact detumbling of rolling uncooperative space targets, this paper proposed an adaptive control method based on the characteristic model. First of all, the mechanism of contact detumbling is analyzed and a dynamic model of the system is established. Then the characteristic modeling of the contact detumbling system was performed and the range of characteristic parameters was obtained. Finally, the golden section adaptive controller was designed based on the model. The simulation results show that the method effectively overcomes the uncertainty of the detumbling contact collision model, and the detumbling process is fast with small residual angular velocity.