绳系太阳能发电卫星姿态机动的主动振动控制

针对绳系太阳能发电卫星大角度回转机动时太阳能板的振动抑制问题，提出了主姿态控制和基于绳中张力的主动振动控制技术相结合的复合控制方法。建立了绳系太阳能发电卫星系统的动力学方程，并基于任务函数控制算法设计了主控制器保证卫星姿态的渐近稳定和挠性结构振动的衰减性；考虑到绳的非线性特性，基于任务函数控制算法设计了绳系卫星系统的主动振动抑制辅助控制器来抑制挠性结构的振动。设计的同时证明了系统的稳定性。将该方法应用于绳系卫星的大角度单轴回转机动的仿真研究，结果表明:该方法不仅能够使绳系卫星完成姿态机动，而且能够有效地抑制太阳能板的振动。

Active Vibration Control of Tethered Solar Power Satellite during Attitude Maneuvering

For vibration suppression of tethered Solar Power Satellite(SPS) during large-angle slewing maneuver,a composite control method is proposed by combining main attitude control with active vibration control based on tether tension.Dynamics equations for the slewing motion of tethered SPS are presented.A mission Function(MF) Control Algorithm is applied to design these two controllers.The main controller is able not only to implement attitude maneuvering of tethered satellite but also suppress the relatively large amplitude vibration of the flexible solar panel.The compensate control system acting on the corners of flexible solar panels is required for the further vibration suppression,and the nonlinearity of the flexible tether is taken into account in the controller design.In the design process,the stability of the vibration control system is proved.Simulation results demonstrate that the proposed approach can significantly suppress the vibration of the flexible solar panel during and after the maneuver operation.