Analytical and experimental evaluation of impact dynamics on a high-speed zero G motion simulator

H. Kawabe, E. Inohira, T. Kubota, M. Uchiyama
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引用次数: 13

Abstract

In a new stage of space development, collision and contact tasks under micro-gravity, such as docking, orbital servicing, and touchdown to a minor body, are now increasingly being considered. A hybrid motion simulation consisting of both physical and numerical models is an effective method to test the motions of a spacecraft under zero G on the ground. The authors have developed a hybrid zero G motion simulator based on a highspeed parallel link mechanism. A wide response bandwidth and high stiffness of the simulator have made it possible to simulate the contact motions with high precision. In this paper, they evaluate analytically the simulator characteristics and verify experimentally the impact of dynamics on the hybrid motion simulation by comparing it with a collision experiment under zero G in a drop-shaft facility. The results imply that the simulator is highly reliable for the impact dynamics simulation under zero G.
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高速零重力运动模拟器冲击动力学分析与实验评价
在空间发展的新阶段,微重力条件下的碰撞和接触任务,如对接、轨道服务、与小天体的着陆等,正越来越多地被考虑。物理模型和数值模型相结合的混合运动仿真是测试零重力作用下航天器在地面运动的有效方法。作者开发了一种基于高速并联连杆机构的混合零重力运动模拟器。该仿真器的宽响应带宽和高刚度使得高精度模拟接触运动成为可能。在本文中,他们分析评估了模拟器的特性,并通过实验验证了动力学对混合运动模拟的影响,并将其与零重力下的落轴设施碰撞实验进行了比较。结果表明,该仿真器对零重力下的冲击动力学仿真具有较高的可靠性。
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