大型空间电站在轨展开与组装动力学与控制

针对大型空间电站在轨展开与组装过程中复杂的动力学环境，将桁架类大型空间电站视为一个刚柔多体系统，采用自然坐标法对刚性构件建模，基于绝对节点坐标方法描述柔性桁架结构，编写了一套动力学仿真软件，实现了大型空间电站在轨展开与组装动力学的精确仿真。仿真结果表明，采用摆线运动插值函数作为控制方程有利于提高多级展开过程的稳定性；在结构组装过程中，减小组装速度，增大组装机构阻尼系数与劲度系数，有利于提高结构稳定性。最终集成了一套针对大型空间电站的动力学仿真平台搭建方法，为大型空间电站在轨展开与组装动力学预示提供了理论依据和方法指导。

On orbit Deployment and Assembly Dynamics and Control of Large Space Power Station

This paper focuses on the dynamics of large space power stations during on orbit deployment and assembly. Considering a large power station as a rigid flexible multi body system, the rigid body modeling is performed by using natural coordinate formulation (NCF) for the rigid members, and the flexible truss structures are described based on the absolute node coordinate formulation (ANCF). The authors have compiled a set of dynamics simulation software to achieve the accurate simulation of the on orbit deployment and assembly dynamics of large space power stations. The simulation results show that using the cycloid function as the governing function is advantageous to improve the stability of the multi stage deployment process. In the structure assembly process, reducing the assembly speed as well as increasing the damping coefficient and stiffness are beneficial to improve the structural stability. This paper integrates a set of dynamic simulation platform construction methods for large space power stations, providing theoretical basis and method guidance for large space power station on orbit deployment and assembly dynamics prediction.