| 基于阻力跟踪的火星大气进入段非线性预测制导律设计 |
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| 作者姓名： | 赵振华 杨俊 李世华 郭雷 |
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| 作者单位： | 东南大学 自动化学院, 南京 210096,东南大学 自动化学院, 南京 210096,东南大学 自动化学院, 南京 210096,北京航空航天大学 自动化科学与电气工程学院, 北京 100191 |
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| 基金项目： | 深空探测973项目资助(2012CB720003) |
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| 摘 要： | 针对火星探测任务大气进入段的高精度着陆问题,提出一种基于阻力跟踪的非线性预测制导策略。基于火星探测器大气进入段的三维运动模型,综合考虑探测器气动参数摄动、火星大气密度摄动、外部扰动以及进入时刻状态初值不确定性,设计了基于优化思想的非线性预测制导律,并对所提出的制导方法进行仿真验证。仿真结果表明:非线性预测制导律在满足控制约束的条件下可以获得较高的着陆精度。
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| 关 键 词： | 非线性预测制导律 火星进入段制导 阻力跟踪 高精度着陆 |
| 收稿时间： | 2015/3/12 0:00:00 |
| 修稿时间： | 2015/4/20 0:00:00 |
Drag-Based Nonlinear Predictive Guidance Law for Mars Entry |
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| Authors: | ZHAO Zhenhu YANG Jun LI Shihua and GUO Lei |
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| Institution: | School of Automation, Southeast University, Nanjing 210096, China,School of Automation, Southeast University, Nanjing 210096, China,School of Automation, Southeast University, Nanjing 210096, China and School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China |
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| Abstract: | Aiming at precision landing of Mars entry for Mars exploration mission, this paper proposes a novel drag-based nonlinear predictive guidance law. Taking into account the aerodynamical parameters perturbation of Mars vehicle, the air density parameter perturbation of Mars, external disturbance and initial states errors, a nonlinear predictive guidance law based on optimization theory is designed for the three-dimensional Mars entry model. The simulation results indicate that under the proposed guidance law, the Mars vehicle achieves a precision landing with the control constraint being satisfied. |
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| Keywords: | nonlinear predictive guidance law Mars entry guidance drag tracking precision landing |
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