嫦娥五号跳跃式再入制导、导航与控制技术

来源 :中国科学:技术科学 | 被引量 : 1次 | 上传用户:missingmm
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继2014年嫦娥五号飞行试验器成功完成月地返回跳跃式再入试验任务后,于2020年末,嫦娥五号探测器又一次圆满完成了月球采样跳跃式再入返回,在两次任务中GNC系统均表现稳定并取得了极高的控制精度,这充分证明了GNC系统方案设计的成功和有效.本文针对月地返回高速跳跃式再入任务本身对制导、导航与控制提出的挑战进行了分析,同时对GNC分系统方案采取的一系列设计进行了介绍;其中包括一种自适应双环制导体制、导航系统使用策略以及控制律计算等.本文还提供了两次飞行任务的飞行数据并对此进行了分析,实际数据的分析也证明
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嫦娥五号(CE-5)着陆上升组合体实现了我国首次月球着陆并起飞的任务,着陆上升组合体的制导、导航与控制(GNC)系统是最重要的分系统之一.为了满足任务的重量要求、安全性要求和智能需求, GNC系统开展了轻量一体化设计,单一控制系统即可满足着陆、起飞、交会的全过程任务需求;以分层控制器为核心构建了高速鲁棒视觉避障系统,有效地节约了燃料并确保了着陆安全;在上升任务中首次实现了月面定姿定位及轨道自主入射
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