嫦娥六号月球背面软着陆中的障碍规避技术OA北大核心CSTPCD
Hazard Avoidance Techniques in Chang'e-6 Lunar Far Side Soft Landing
月球背面软着陆需要面对复杂的地形环境,对避障能力的要求相比月球正面着陆任务更高.受到推进剂和其他因素的限制,嫦娥六号着陆器并没有采用类似嫦娥四号提高避障高度的方法来扩大避障能力,而是将部分的"定点"着陆技术与避障技术相结合,在主减速段通过单向航程控制避开已知大尺寸障碍,在接近段以下飞行过程采用粗精结合的接力避障策略识别和规避预先未知的小尺寸障碍,最终实现了安全软着陆.嫦娥六号采用的这种避障方案相比以往嫦娥系列着陆器技术水平升级,也为后续实现完全意义上的定点着陆提前进行了技术验证.
Soft landing on the far side of the moon involves complex terrain and requires a higher level of hazard avoidance capability than landing on the near side of the moon.Restricted by propellant and other factors,the Chang'e-6 lander adopt a different method from Chang'e-4 that raises the hazard avoidance altitude to expend its hazard avoidance capability.Instead,it combines part of the"pinpoint"landing technology with hazard-avoidance.The pinpoint landing method helps the lander avoid known large-size hazards through unidirectional range control in the main braking phase.And the rough-fine-relay hazard-avoidance strategy identifies and avoids small-size hazards unknown in advance during the flight process below the approach phase to ultimately realize a safe soft landing.The hazard avoidance scheme adopted by Chang'e-6 is a technological upgrade compared with the previous Chang'e se-ries landers,and was technologically verified in advance for the subsequent realization of a full-fledged pinpoint landing.
张洪华;李骥;于洁;关轶峰;张晓文;王志文;陈尧;华宝成
北京控制工程研究所,北京 100094||空间智能控制技术全国重点实验室,北京 100094北京控制工程研究所,北京 100094||空间智能控制技术全国重点实验室,北京 100094北京控制工程研究所,北京 100094北京控制工程研究所,北京 100094||空间智能控制技术全国重点实验室,北京 100094北京控制工程研究所,北京 100094||空间智能控制技术全国重点实验室,北京 100094北京控制工程研究所,北京 100094北京控制工程研究所,北京 100094北京控制工程研究所,北京 100094
嫦娥六号软着陆月球背面障碍规避航程控制
Chang'e-6soft landingfar side of moonhazard avoidancerange control
《空间控制技术与应用》 2024 (6)
1-11,11
国家重大专项工程探月四期 Major National Projects of China(The 4th Stage of China's Lunar Exploration)
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