| 着陆小行星的滑模变结构控制 |
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| 引用本文： | 李爽,崔平远.着陆小行星的滑模变结构控制[J].宇航学报,2005,26(6):808-812. |
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| 作者姓名： | 李爽 崔平远 |
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| 作者单位： | 哈尔滨工业大学137信箱,深空探测基础研究中心,哈尔滨,150001 |
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| 基金项目： | 863国家高技术研究发展计划（2003AA735080） |
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| 摘 要： | 针对由于目标小行星的各种物理参数和运动信息不能精确获取而导致着陆小行星的动力学方程中存在不确定项这一问题，设计了一种基于滑模变结构的软着陆小行星的制导控制方案。在考虑安全软着陆约束条件下规划了标称着陆轨迹；通过滑模变结构控制方法设计制导控制律，实现对理想标称轨迹的鲁棒跟踪，从而保证成功着陆小行星；最后通过计算机仿真验证了方案的可行性。
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| 关 键 词： | 软着陆 视线制导 滑模变结构控制 小行星 |
| 文章编号： | 1000-1328（2005）06-0808-05 |
| 收稿时间： | 11 26 2004 12:00AM |
| 修稿时间： | 2004-11-262005-06-21 |
Variable Structure With Sliding-Mode Control for Landing on Asteroids |
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| LI Shuang,CUI Ping-yuan.Variable Structure With Sliding-Mode Control for Landing on Asteroids[J].Journal of Astronautics,2005,26(6):808-812. |
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| Authors: | LI Shuang CUI Ping-yuan |
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| Institution: | Deep Space Exploration Research Center, P. O. Box 137, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Due to physical parameters and motion information of target asteroid aren't acquired accurately,landing dynamics equations inevitable include various disturbances,such as unmodel acceleration terms.This paper brings forward a landing guidance and control scheme based on variable structure with sliding mode(VSS) to overcome the impact coming from unmodel acceleration terms.First,the desired trajectory is planned out under considerations of safe soft landing constrains;Second,according to VSS,the guidance law is designed to achieve tracking the desired trajectory and succeed in landing on asteroid;Finally,the feasibility of this scheme is validated by computer simulation. |
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| Keywords: | Soft landing Line-of-sight guidance VSS Asteroids |
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