驱动轮结构参数对月球车牵引性能影响研究

研究在月球表面环境下月球车的牵引通过性能,对保证其正常探测工作具有重要意义.根据牵引性能的评价指标,在模拟月壤-车轮土槽测试系统上对不同结构参数的驱动轮牵引性能进行对比试验.结果表明,当增大驱动轮宽度和直径时,其挂钩牵引力和效率系数都呈增大趋势;增大驱动轮的轮刺高度,挂钩牵引力增大;当滑转率小于20%时,效率系数随着轮刺高度的增大而增大,而当滑转率大于20%时,效率系数随着轮刺高度的增大而减小;增大驱动轮轮刺密度时,其挂钩牵引力和效率系数随之先增大后减小.

Study on the Influence of Lunar Wheel Configuration for Traction Ability

It is important to research the relationship on the vehicle-terramechanics in lunar surface circumstances for the lunar rover to work normally.Based on the indices of the traction performance, the comparative indoor test were made in simulated lunar soil for different configuration wheels.The test results show that,the drag bar pull and efficiency coefficient is increasing with the wheel width and diameter.The draw bar pull increased with the rug height,but the efficiency coefficient reduces when the slip radio is bigger than 20%.The draw bar pull and efficiency coefficient will reduce with the rug distribution increases when the rug distribution is more than 20%.