月球车驱动轮牵引性能研究  

Study on the Traction Performance for the Driving wheel of Lunar Rover

作　　者：邹猛[1] 李建桥[2] 张金换[1] 任露泉[2] 李因武[2] 

机构地区：[1]清华大学汽车安全与节能国家重点试验室,北京100084 [2]吉林大学地面机械仿生技术教育部重点实验室,长春130022

出　　处：《宇航学报》2009年第1期98-103,共6页Journal of Astronautics

基　　金：教育部科学技术研究重点项目(107035);吉林大学“985工程”资助项目

摘　　要：研究在月球表面环境下行驶的月球车牵引性能,对保证其正常探测工作具有重要意义。以长白山火山灰为主要原料制备了应用于月面车辆力学试验中的模拟月壤,研制了月壤—车轮土槽测试系统,对有刺轮与光滑轮进行了牵引性能试验。试验结果表明,有刺轮的最大挂钩牵引力(DP)为光滑轮的5.2倍;当滑转率为10%时,有刺轮在硬路面上的DP为其在模拟月壤上的6.7倍。在此基础上,通过离散单元法(DEM)对驱动轮与月壤相互作用关系进行了细观分析,模拟出驱动轮下月壤颗粒的受力、位移、速度的分布规律及无牵引阻力条件下驱动轮的牵引性能。研究结果为月球车的性能评估和面向月球的高通过性行走机构研制提供基本方法和基础数据。It is very important to study the traction performance of the lunar rover on lunar surface environment for guaranteeing the normal exploration on the moon. We simulated lunar soil for the lunar-terramechanic test, developed the soil bin test equipment and designed a variety of wheels. The traction test was carried on in the soil bin equipment, and it showed that the max. DP of the rug-wheel is 5.2 times as that of the smooth-wheel, and the DP of the driving wheel tested in the stimulant lunar soil is 1/6.7 times as that of the driving wheel tested on the hard pavement when the slip ratio is 10 percent. Based on experiment restdts, the DEM simulation was used to analyze the microcosmic relationship between the driving wheel and lunar soil particles. The force, velocity and displacement of the particles under the wheel, and the traction performance of the driving wheel without pulling resistance, were simulated. According to the results, the rug-wheel has better traffic ability than the smooth-wheel, but the rugwheel needs more power. The research provides an essential method and basic data for the performance evaluation of the lunar rover and the development of walking mechanism with high passing ability on the lunar environment.

关 键 词：驱动轮 牵引性能 离散单元法 模拟月壤 地面力学 

分 类 号：U461[机械工程—车辆工程] TP391[交通运输工程—载运工具运用工程]