月球软着陆动力学分析与仿真  

Dynamic analysis and simulation of soft-landing for lunar lander

作　　者：罗松柏[1] 赵永嘉[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《北京航空航天大学学报》2012年第2期185-190,共6页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家高技术研究发展计划资助项目(2009AA01Z333)

摘　　要：以4腿式月球探测器为研究对象,分析了探测器的部件结构与物理属性、月球物理环境等综合因素.在探测器动力学研究中,提出了一种基于结构的分块参数化仿真方法,分析探测器着陆时的受力,建立着陆腿与足垫等关键部件的动力学模型,利用简化探测器结构,综合各部分模型.结合虚拟现实可视化仿真技术,实现月球软着陆过程仿真.通过仿真反映出月面坡度与着陆速度、刚度系数与阻尼系数等初始条件对软着陆效果的影响,验证方法的有效性.该方法已成功应用于登月工程研究.Taking the four-leg lunar lander as the study object, the lander＇ s component structure and lu- nar physical attribute was analyzed. When studying the lander＇ s dynamics, a block parameter simulation method based on structure was proposed, which analyzes the lander＇ s dynamic behavior during the landing moment, derives the buffers＇ and foot pads＇ dynamic model individually and integrates each model through simplifying lander＇ s structure. Technology of visual simulation was introduced and simulation of lunar-landing was realized. The effects of different initial conditions, such as slop of lunar surface and lading velocity, stiff- ness coefficient and damping coefficient were measured through simulation. The result verifies the validity of the method. This method has already successfully applied in engineering research of lunar-landing.

关 键 词：月球软着陆 动力学 结构 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]