基于非线性观测器的非合作目标姿态跟踪控制

非合作目标的姿态角速度、角加速度未知，给在轨服务航天器跟踪非合作目标姿态的控制器设计带来挑战.为解决这一问题，设计了一种非线性观测器，该观测器能够估计出非合作目标状态，然后构造了基于非线性观测器的姿态跟踪控制器，并证明了闭环系统的一致渐近稳定性.仿真结果表明，设计的方法不仅能够实现非合作目标的状态估计，而且实现了对非合作目标姿态的跟踪.

Attitude Control for Non Cooperative Target Tracking Based on Nonlinear Observer

With the unknown angular velocity and angular acceleration of the non cooperative target, it is challenging to design the attitude control of on orbit autonomous servicing (OOAS) for non cooperative target tracking. The nonlinear observer is designed to obtain the states of the non cooperative target. Based on the nonlinear observer, the attitude tracking controller is designed. Moreover, the stability of the closed loop system is proved. The methods are verified by using computer simulations.