带可控臂的绳系卫星短距释放实验研究

通过绳系卫星轨道面内运动的天-地动力学相似,利用地面物理仿真平台实验研究绳系卫星短距离释放的控制问题.首先建立带控制臂的绳系卫星系统非线性动力学方程,获得天-地动力学相似条件,采用比例-微分反馈控制方法,对受控绳系卫星的姿态运动进行数值仿真.其次,利用地面物理仿真平台实现绳系卫星的天-地动力学相似环境,通过单根刚性臂实现卫星姿态运动和系绳摆动的两自由度运动控制.实验和数值对比结果表明,借助控制臂可以有效的对绳系卫星的释放进行控制.

Experimental research on short distance deployment of tethered satellite system with controllable arm

Based onphysical simulation experiment, an attitude control problem concerning the in plane motion of a tethered satellite system with short distance deployment is studied by means of dynamics similarity between the ground-based experiments and the on orbit system. Starting with nonlinear dynamic of the tethered satellite system with controllable arm, dynamics similarity conditions between the ground based experiments and the on orbit system are obtained. using the proportion differential feedback control strategy, a numerical simulation is performed to the attitude motion of the controlled tethered satellite. Subsequently, the similar on orbit environment is realized by experimental platform. The ground based test is conducted, the control of the attitude motion tethered satellite the tether swing is achieved only using single rigid arm. Finally, the comparison of experimental and numerical results demonstrate that the of rigid arm can effectively control the deployment of the tethered satellite.