绳系库仑结构姿态波动控制方法

In order to control the attitude of tethered Coulomb structures (TCS), a wave-based controller is proposed in view of co-existence of rigidity and flexibility of TCS. Firstly, the wave equation is used to describe the motion of the ring-string model (RSM), and the wave propagation in RSM is analyzed by solving the wave equation under boundary constraints. After that, the attitude control problem of TCS is transformed into the vibration control problem of RSM, and a wave controller is designed using the method of reflected wave absorption and verified by numerical simulation. The simulation results show that the wave-based controller can control the attitude of TCS without vibration of TCS. The wave-based controller has low demand for the ability of the actuator and is easy to be implemented. Since the attitude control of TCS can be realized as long as one spacecraft of TCS has maneuverability, the requirement of actuator of TCS can be reduced or the attitude of TCS can be controlled although the actuator of one spacecraft of TCS is defunct.