基于网口轨迹的空间绳网捕获

空间绳网是一种柔性的捕获技术，为更准确地研究绳网捕获空间目标的过程，提出了一种基于网口轨迹的分析方法。采用集中质量法和Hertz接触理论构建了绳网捕获目标的动力学模型。将绳网捕获目标的过程按时间先后顺序分为自由展开、包裹目标以及利用收口装置捕获目标3个阶段进行研究。基于对网口轨迹的分析，提出了绳网成功捕获目标的评价指标，重点对捕获过程中涉及的相关参数进行分析，评估了包括发射速度、捕获距离、收口时间以及偏心距离等在内的捕获参数对绳网捕获目标过程的影响。仿真结果表明，基于网口轨迹的分析方法可以更直观全面地分析绳网捕获目标的过程，并为捕获参数的选择提供参考依据，以提高绳网捕获目标的成功率。

Space net capture based on net mouth trajectory

Space net is a flexible capture technology. To analyze the process of capturing target more accurately, an analysis method based on the net mouth trajectory is proposed. Using the mass spring-damper model and Hertz contact theory, a dynamics model of net capture is established. According to the time sequence, the process of net capture is divided into three stages:deploying, wrapping and capturing. Based on the trajectory analysis of the net mouth, the evaluation index for the capture success is proposed. This paper focuses on the analysis of relevant capture parameters involved in the capture process. These capture parameters include the shooting velocity, capture distance, moment of net mouth closure, and eccentric distance. The result shows that the analysis method based on the net mouth trajectory can analyze the net capture process more comprehensively and directly. The method can provide a reference for selection of capture parameters to improve the success rate of target capture by the net.