空间绳网捕获性能及误差影响分析  

Analysis of Performance and Error Influence of Tether-Net Capture

作　　者：司骥跃 庞兆君 付杰 杜忠华[1] SI Ji-yue;PANG Zhao-jun;FU Jie;DU Zhong-hua(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Beijing Institute of Mechanical Equipment,Beijing 100854,China;Shanghai Aerospace Control Technology Institute,Shanghai 201109,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]北京机械设备研究所,北京100854 [3]上海航天控制技术研究所,上海201109

出　　处：《宇航学报》2021年第10期1217-1227,共11页Journal of Astronautics

基　　金：国家自然科学基金(11802130);江苏省自然科学基金(BK20170819)。

摘　　要：针对空间绳网的抓捕过程,确定了抓捕成功的评价标准,研究了多种非理想因素对绳网抓捕过程的影响。使用弹簧质点法建立了绳网的动力学模型,并建立了计入摩擦力的绳网碰撞动力学模型。以绳网边长为度量确定了抓捕目标的理论极限包络。提出了理想工况和非理想工况下界定绳网抓捕成功的判据,并重点研究了发射速度误差、发射同步性和抽出阻力差异对绳网抓捕性能的影响。结果表明:以展开率80%作为抓捕成功的界定标准过于严格,空间绳网具有较高的抓捕容错能力。Aiming at the capture process of a tether-net,the evaluation criterion of successful capture is proposed,and the influence of the non-ideal parameters on the net capture is studied.The mass-spring-damper method is used to model the tether-net and the contact dynamics model of the tether-net considering the friction force is established.Based on the side length of the net,the limit size of the target is determined.The evaluation criterion to define the successful capture of the tether-net under ideal and non-ideal cases are proposed,and the effects of shooting velocity error,shooting synchronization,and extraction force error on the capture performance of the tether-net are studied.The results reveal that the deployment rate of 80%is too strict as the threshold value of a successful capture,and the tether-net has a high degree of fault tolerance.

关 键 词：空间绳网 弹簧质点法 碰撞动力学 捕获性能 

分 类 号：V476.5[航空宇航科学与技术—飞行器设计]