火星着陆多约束轨迹优化与鲁棒制导方法研究

项目名称： 火星着陆多约束轨迹优化与鲁棒制导方法研究

项目编号： No.61304226

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 高艾

作者单位： 北京理工大学

项目金额： 25万元

中文摘要： 行星探测是当前航天技术发展的重要领域之一。我国在探月成功之后，火星将成为下一个重点探测目标。本项目将围绕火星着陆任务面临的难点问题，针对工程解决方法和理论研究中存在的不足，探索创新性着陆轨迹优化与鲁棒制导理论与方法。基于智能优化理论，研究高海拔着陆火星大气进入轨迹多约束耦合规划方法，对传统解空间优化方法进行扩充；将导航估计不确定性纳入制导设计中，提出基于可观测性约束的火星着陆轨迹随机优化制导方法，为导航制导系统一体化设计提供新思路；基于随机Liouville方程分析高维非线性动力学不确定性传播机理，获得低升阻比探测器火星精确着陆鲁棒自适应制导控制策略，为我国未来全面开展火星探测活动提供着陆轨迹规划与制导方面的理论基础与技术储备。

中文关键词： 火星着陆；大气进入制导；多约束规划；弱观测优化；强扰动抑制

英文摘要： Planetary exploration is one of the most important areas of aerospace technology development. Following the success of China's lunar exploration program, a high focus will be placed on Mars which is the next exploration target. Aiming at the deficiencies of engineering solution and theoretical research, the project will develop innovative theories and methods of landing trajectory optimization and robust guidance to deal with the difficult problem of Mars landing. Firstly, multi-constraint Mars entry trajectory optimization for high-elevation landing will be conducted based on intelligent optimization theory, which will be an extension to the traditional optimization method of solution space. Secondly, a stochastic guidance under observability constraint, introducing uncertainties of navigation to guidance design, will be researched for Mars landing, which will provide innovative ideas for integrated navigation and guidance system design. Finally, a framework based on stochastic Liouville equation will be provided for the propagation of uncertainty in Mars entry, descent, and landing. And a robust adaptive guidance and control strategy will be considered for Mars pin-point landing. The project research will lay a fundamental base for the theory and method of guidance and control for Chinese future Mars explorati

英文关键词： Mars landing；entry guidance；multi-constraint programming；weak observability optimization；strong disturbance tejection