空间充气展开绳网捕获系统动力学建模与分析

doi:10.3901/JME.2018.22.145

机械工程学报 ›› 2018, Vol. 54 ›› Issue (22): 145-152.doi: 10.3901/JME.2018.22.145

空间充气展开绳网捕获系统动力学建模与分析

刘昊¹, 魏承¹, 田健¹, 谭春林², 赵阳¹

1. 哈尔滨工业大学航天学院哈尔滨 150001;
2. 北京空间飞行器设计总体部北京 100000

收稿日期:2018-01-06 修回日期:2018-08-03 出版日期:2018-11-20 发布日期:2018-11-20
通讯作者: 魏承(通信作者),男,1983年出生,博士,副教授。主要研究方向为空间柔性多体系统动力学、控制与系统仿真技术。E-mail:weicheng@hit.edu.cn
作者简介:刘昊,男,1990年出生,博士研究生。主要研究方向为航天机构动力学控制与仿真。E-mail:liuhaoyt@stu.hit.edu.cn
基金资助:
微小型航天器技术国防重点学科实验室开放基金资助项目（HIT.KLOF.MST.201703）。

Dynamics Modeling and Analysis of the Inflatable Net System for Space Capture

LIU Hao¹, WEI Cheng¹, TIAN Jian¹, TAN Chunlin², ZHAO Yang¹

1. School of Astronautics, Harbin Institute of Technology, Harbin 150001;
2. Institute of Spacecraft System Engineering, China Academy of Space, Beijing 100094

Received:2018-01-06 Revised:2018-08-03 Online:2018-11-20 Published:2018-11-20

摘要/Abstract

摘要： 空间充气展开绳网系统在空间捕获中具有自身特殊的优势：占用体积小，展开后捕获范围大，且绳网由充气杆支撑，结构更加稳固，比空间飞网系统更加具有应用潜力。基于绝对节点坐标法（Absolute node coordinate method，ANCF）建立空间充气展开绳网捕获系统动力学模型，应用Hertz理论建立柔性体碰撞动力学模型，对系统进行动力学仿真分析。仿真表明，静力学和振动分析能够为机构力学参数选型提供参考，相比充气杆末端激励，绳网中部受到激励时对捕获机构振动影响更大；机构收口拉力随着充气杆刚度的增加而增大，对充气杆的放气处理可以降低其刚度，从而减小收口拉力，约为原来的10%，易于收口机构的设计。通过对期望目标的捕获仿真，分析了影响收口过程的关键指标，证明了捕获策略的合理性和动力学模型的准确性。研究结果能够对空间充气展开绳网捕获系统设计提供有效的依据。

关键词: 充气展开杆, 绝对节点坐标法, 空间绳网, 碰撞计算, 收口捕获, 振动分析

Abstract: The inflatable net system has its own special advantages in space capture,which could be compacted into a small volume and have a large capture area. Because of the support of the inflatable boom, the system is more stable, resulting in more application than the tether-net system. The dynamic model of the inflatable net system based on absolute node coordinate method(ANCF) and collision model of flexible body based on Hertz theory are established, which are used for the simulation of capture of space targets. Simulation results show that, the analysis of statics and vibration can provide reference for selecting parameters of mechanism. When external disturbance is applied to the rope rather than the inflatable boom, the vibration of the system will be greater. The excessive stiffness of the inflatable boom will increase the closing force. The deflation of the inflatable boom can reduce its stiffness and reduce the closing force, which is about 10% of the original, with the result of being good to the design of the closing mechanism. Then through the dynamic simulation of the whole process of closing capture, the key indicators that affect the closing process are analyzed, which can prove the reasonableness of the capture strategy and the accuracy of the dynamic model. The research results can provide an effective basis for the design of the new inflatable net system for space capture.

Key words: absolute node coordinate method, catch port, collision calculation, inflatable boom, space net, vibration analysis

中图分类号:

V414

刘昊, 魏承, 田健, 谭春林, 赵阳. 空间充气展开绳网捕获系统动力学建模与分析[J]. 机械工程学报, 2018, 54(22): 145-152.

LIU Hao, WEI Cheng, TIAN Jian, TAN Chunlin, ZHAO Yang. Dynamics Modeling and Analysis of the Inflatable Net System for Space Capture[J]. Journal of Mechanical Engineering, 2018, 54(22): 145-152.

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空间充气展开绳网捕获系统动力学建模与分析

Dynamics Modeling and Analysis of the Inflatable Net System for Space Capture

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