基于Lyapunov理论的卫星大挠性太阳能帆板分布式自适应振动抑制控制方法

Distributed adaptive vibration suppression control method of large solar panels for satellites based on Lyapunov theory

提出了一种分布式自适应振动抑制控制方法,有效抑制了卫星大挠性帆板在轨振动问题。考虑作动器和传感器的安装位置对控制效果的影响,通过分析邻接子模块之间振动和输出力的耦合影响,基于Lyapunov理论设计了完整的分布式自适应控制器。仿真结果表明,在外界持续干扰等情况下,本文设计的分布式控制系统与基于线性二次型调节器(LQR)的分布式控制方法相比抑振时间缩短了40%,与集中式控制方法相比抑振时间缩短了50%,得到了更良好的在轨抑振效果,对于卫星的稳定运行具有重要意义。

A distributed adaptive vibration suppression control method was investigated to effectively suppress the on-orbit vibration of large flexible satellite panels.Considering the influence of actuator and sensor installation position on the control effect,a complete distributed adaptive controller was designed based on Lyapunov theory by analyzing the coupling effect of vibration and output force between adjacent sub-modules.The simulation results show that the vibration suppression time of the proposed distributed control method is reduced by 40%compared with the distributed control method based on LQR control method and 50%compared with the centralized control method under the condition of continuous external interference.Furthermore,the proposed control method has an improved on-orbit vibration suppression effect and is of great significance for the stable operation of the satellite.