Force-transmission characteristics of a cable-driven mechanism with high initial velocity for spacecraft separation in ground tests
Force-transmission characteristics of a cable-driven mechanism with high initial velocity for spacecraft separation in ground tests
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DOI：
10.1007/s12206-023-1108-z
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发表时间：
2023-12
影响因子：
1.6
通讯作者：
Senhao Hou;Dongxing Li;Qunzhi Li;Xiaoqiang Tang
中科院分区：
文献类型：
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作者：
Senhao Hou;Dongxing Li;Qunzhi Li;Xiaoqiang Tang
在深空探测中，航天器的高速分离过程充满了不确定性和不可控性。为了准确地模拟和分析这一过程，通常需要进行一系列地面试验。在这项研究中，提出了一个电缆驱动的机制来模拟这一过程。考虑到航天器的高初速度，缆索力经历剧烈波动。因此，详细研究索力传递特性的机理，对提高索力施加的准确性至关重要。提出了松弛时间、索力峰值和平均相对误差等三个关键参数来描述力传递特性。推力，预张力和杨氏模量等参数对力传递特性的影响也进行了研究。提出了一种输入索力规划算法，提高了索力的精度。在一定的上下限范围内进行了高速分离试验，试验数据与仿真数据吻合较好，验证了模型的准确性。
In deep space exploration, the high-speed separation process of spacecraft is fraught with uncertainty and uncontrollability. To accurately simulate and analyze this process, a series of ground tests are typically required. In this study, a cable-driven mechanism is proposed to simulate this process. Given the high initial velocity of the spacecraft, the cable force undergoes violent fluctuations. Thus, a detailed study of the mechanism governing the forcetransmission characteristics is essential to enhance the accuracy of cable force application. Three key parameters, such as slack time, peak cable force, and average relative error, are proposed to illustrate force-transmission characteristics. The effects of parameters such as thrust, pre-tension, and Young’s modulus on force-transmission characteristics are also investigated. An input force planning algorithm is proposed to improve the accuracy of the cable force. High-speed separation tests are conducted within certain upper and lower bounds, and the experimental and simulation data demonstrate good agreement, confirming the accuracy of the proposed model.