Dynamic analysis and simulation of soft-landing for lunar lander
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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.Abstract: Taking the four-leg lunar lander as the study object, the lander's component structure and lunar 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, stiffness 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.
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Key words:
- lunar landing /
- dynamics /
- structure /
- simulation
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