反无人机网捕发射参数误差可行域分析  

Parameter Feasible Region Analysis of the Tethered Net Shooting Error Aiming at UAV

作　　者：何举 竺伟梁 庞兆君 赵真 杜忠华[1] HE Ju;ZHU Weiliang;PANG Zhaojun;ZHAO Zhen;DU Zhonghua(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Aerospace System Engineering Shanghai,Shanghai 201109,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]上海宇航系统工程研究所,上海201109

出　　处：《宇航学报》2024年第5期711-719,共9页Journal of Astronautics

基　　金：国防科工局空间碎片与近地小卫星防御科研项目(KJSP2020010303)。

摘　　要：针对“低、慢、小”无人机网捕任务存在发射误差问题,基于弹簧质点法和Hertz碰撞理论建立了地面环境下绳网的展开碰撞动力学模型。提出理想工况和非理想工况绳网成功抓捕的判据,通过大量数值仿真分析绳网在给定发射距离、发射角度下牵引体的发射速度误差和发射时间误差可行域;并采用一种带有激光测速机构的绳网地面发射装置验证本文模型的正确性。仿真和地面试验结果表明,在给定发射距离、发射角度下,发射速度和发射时间存在一定误差时绳网仍具有较高的抓捕容错率;仿真结果和试验展开过程基本吻合,验证了所建立的动力学模型的可靠性,对实际抓捕任务具有现实指导意义。Aiming at the shooting error problem in tethered-net capture of “low,slow and small” unmanned aerial vehicle(UAV),a dynamic model of net deployment and collision based on the spring-mass particle method and Hertz collision theory is established.The evaluation criteria for successful capture of the tether-net under ideal and non-ideal conditions are proposed.At given distance and angle,numerous numerical simulations are conducted to analyze the feasible region of shooting velocity error and shooting time error of the bullets connected to the four corners of the net.A ground-based net launch device with laser speed measurement is employed to validate the accuracy of the proposed model.The comparison between analytical and ground experimental results demonstrates that the tethered net still maintain a high capture tolerance even when there are certain inaccuracies in the launch parameters such as velocity and time.The established dynamic model of the tethered-net is also experimentally validated to be reliable.This paper provides practical guidance for real-world capture missions.

关 键 词：网捕无人机 绳网地面试验 发射误差 可行域分析 

分 类 号：V411[航空宇航科学与技术—航空宇航推进理论与工程]