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登月软着陆的部分阶段最优控制策略

Some Stage Optimal Control Strategy of Lunar Soft Landing
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摘要 针对嫦娥三号软着陆轨道设计与控制策略,使用了仿真计算、螺旋搜索等方法,建立了经纬度求解、速度求解、粗避障和精避障段的优化控制等模型,并利用MATALB等软件对模型进行求解,得到了近地点近月点速度为1.678×103 m/s,高度为14.8km,远月点速度为1.604×103 m/s等结论.通过对着陆准备阶段、粗避障段、精避障段及缓速下降段分段研究,得到一个简单合理的优化控制模型.在对数字高程图的图像处理中,引入坡度的概念,对所得坡度图网格化处理,全面而有效. In view of the Chang'e three soft landing orbit design and control strategy,using the simulation calculation,spiral search methods,establishing models such as longitude and latitude sdving,the speed sdving,the optimization of coarse and fine obstacle avoidance control,and the model is solved by software MATALB,obtained the speed is 1.678km/s,14.8km perigee near month,far month point speed is 1.604km/s.Finally,by studing the landing stage,coarse obstacle avoidance,fine obstacle avoidance and slow decline period of segmentation,a simple and reasonable optimization control model is got.
出处 《德州学院学报》 2015年第4期29-31,47,共4页 Journal of Dezhou University
基金 国家自然科学项目(11301001) 安徽财经大学教研项目(acjyzd201429)
关键词 软着陆轨道 仿真计算 螺旋搜索 MATLAB EXCEL soft landing orbit the simulation calculation spiral search MATLAB Excel
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