Attitude stabilization of a massive rotating uncooperative target by a tethered space tug is studied for orbit maneuvering in the postcapture operation analytically and experimentally. The perturbed orbital propagation of the tethered space system is described with nonsingular orbital elements and the relative equations of motion of the tethered space system, including the tether libration and attitudes of target and tug, are established in the orbital frame. The tether tension control, the tug's attitude control, and the combination control of them are designed to suppress the attitude and libration motions of the target/tug and the tethered space system with bounded stability. The control law's effectiveness is demonstrated by simulation and then validated experimentally by a microgravity testbed with two tethered free-floating air-bearing satellite simulators.

中文翻译：

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系留空间拖船稳定旋转不合作目标的分析与实验研究


通过分析和实验研究了系留空间拖船对大型旋转不合作目标的姿态稳定，以实现捕获后操作中的轨道机动。用非奇异轨道元描述了系留空间系统的扰动轨道传播，并在轨道框架下建立了系留空间系统的相对运动方程，包括系链振动以及目标和拖船的姿态。系绳张力控制、拖船姿态控制及其组合控制旨在以有限稳定性抑制目标/拖船和系留空间系统的姿态和振动运动。通过仿真证明了控制律的有效性，然后通过带有两个系留自由浮动空气轴承卫星模拟器的微重力测试台进行实验验证。