无人机抛投救生圈下落轨迹及落点散布研究  

A Study of Falling Trajectory and the Dispersion of the Landing Points of the Life Buoy Thrown by UAV

作　　者：朱立波 黄文骞[1] 吴迪 刘翔[1] 张志强[1] ZHU Libo;HUANG Wenqian;WU Di

机构地区：[1]海军大连舰艇学院,辽宁大连116000

出　　处：《科技创新与应用》2022年第5期6-10,14,共6页Technology Innovation and Application

摘　　要：在中国,平均每天约有150多人因溺水而死亡,传统抛投救生圈的方式,因受地域、距离、投放点的限制,往往投掷精度不高,导致贻误救援时机,而采用无人机抛投救生圈则可有效克服这一缺陷。为提高抛掷的精度,文章分析救生圈下落过程中气动力的影响,并建立救生圈空间三自由度动力学方程,揭示救生圈下落过程运动状态变化的机理。利用MATLAB软件并结合蒙特卡洛方法,实现对救生圈的下落轨迹及落点散布的仿真,得到不同高度、释放初速度和风场条件下对救生圈下落轨迹及落点散布的影响程度,为无人机水上救援提供参考。In China, more than 150 people die from drowning every day. The traditional way of throwing life buoy is limited by the region, distance and delivery point, so the precision of throwing is not high, and the time of rescue is delayed.However, this defect can be effectively overcome using the UAV. To improve the throwing precision, this paper analyzes the influence of aerodynamic force during the falling process of the life buoy, establishes three spatial degrees of freedom dynamic equation of lifebuoy space, and reveals the mechanism of the change of the motion state of the life buoy during the falling process. Using MATLAB software and combining with Monte Carlo method, the simulation of the landing trajectory and the dispersion of the landing point of the life buoy is realized. Thus, the effects of different altitude, initial velocity and wind field on the trajectory and the dispersion of the landing point of the life buoy are obtained, which provides a reference for the UAV lifesaving on water.

关 键 词：无人机救生 空间三自由度 轨迹仿真 蒙特卡洛 

分 类 号：U676.83[交通运输工程—船舶及航道工程]