Formation and Attitude Control for Rotational Tethered Satellite Clusters
Formation and Attitude Control for Rotational Tethered Satellite Clusters
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DOI：
10.2514/1.14910
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发表时间：
2007
影响因子：
1.6
通讯作者：
O. Mori;S. Matunaga
中科院分区：
文献类型：
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作者：
O. Mori;S. Matunaga
提出了一种绳系卫星群系统，该系统由绳系连接的多颗卫星组成，通过主动控制绳系张力和绳系长度来保持和改变编队，以节省推进器燃料，提高控制精度。该概念可应用于在轨服务的系留多卫星，其可以执行各种任务，包括检查、投掷、捕获、回收、停泊和脱离不受控制的卫星。考虑了编队飞行的卫星在同一平面上绕质心转动的系统的转动运动。给出了系绳张力对旋转运动的平衡条件，提出了一种推力器、反作用轮和系绳张力/力矩的协调控制方法。数值仿真和地面实验表明，对系绳张力和力矩的控制不仅节省了推进器的燃料，而且提高了编队飞行的位姿精度。
A tethered satellite cluster system, which consists of a cluster of satellites connected by tethers and which can maintain and change formation via active control of tether tension and length to save thruster fuel and improve control accuracy is proposed. The concept can be applied to tethered multisatellites for in-orbit servicing, which can perform various missions, including inspection, casting, capture, recovery, moorage, and deorbiting of an uncontrolled satellite. The rotational motion of such a system that the satellites in formation flying are required to rotate about the center of mass of the system on the same desired plane is considered. The equilibrium conditions that the tether tension imposes on the rotational motion are given, and a coordinated control method for the thrusters, the reaction wheels, and the tether tension/torque is proposed. Numerical simulations and ground experiments show that the control of the tether tension and torque not only saves thruster fuel, but also improves the position and attitude accuracy of formation flying.