环月降轨实现月面着陆的控制策略

李革非; 刘勇; 马传令; 郝大功

doi:10.13700/j.bh.1001-5965.2019.0168

环月降轨实现月面着陆的控制策略

doi: 10.13700/j.bh.1001-5965.2019.0168

李革非^{1, 2, ,},
刘勇^{1, 2},
马传令²,
郝大功²

1.
航天飞行动力学技术重点实验室, 北京 100094
2.
北京航天飞行控制中心, 北京 100094

基金项目:

国家自然科学基金 11773004

国家自然科学基金 61573049

详细信息

作者简介:
李革非女, 博士, 研究员。主要研究方向:航天器动力学与控制

通讯作者:
李革非, E-mail:sophiebacc@sina.com

中图分类号: V525;V529
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- 文章访问数: 673
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- 被引次数: 0
出版历程
- 收稿日期: 2019-04-18
- 录用日期: 2019-07-12
- 网络出版日期: 2020-01-20

Control strategy of lunar orbit descent to achieve lunar landing

LI Gefei^{1, 2
, ,},
LIU Yong^{1, 2},
MA Chuanling²,
HAO Dagong²

1.
Science and Technology on Aerospace Flight Dynamics Laboratory, Beijing 100094, China
2.
Beijing Aerospace Control Center, Beijing 100094, China

Funds:

National Natural Science Foundation of China 11773004

National Natural Science Foundation of China 61573049

More Information

Corresponding author: LI Gefei, E-mail:sophiebacc@sina.com

摘要

摘要:
针对探测器实现月面着陆的问题，对环月降轨轨道控制策略进行了研究。根据环月降轨的控制方程，将环月降轨单脉冲控制变量的不同组合与月面着陆目标参数建立了3种关系；建立了定时定点月面着陆、定点月面着陆和目标纬度区域月面着陆3种环月降轨控制策略，并给出了控制策略求解算法和步骤。针对定点月面着陆，单脉冲对半长轴和近月点高度进行组合控制，分析了环月降轨控制解空间。针对标称环月轨道/-偏差环月轨道/+偏差环月轨道，分别进行了定时定点/定点/目标纬度区域3种月面着陆的控制计算，验证了环月降轨控制策略。可应用于月球着陆、月球采样返回及载人登月等实施月面定时定点着陆任务的轨道控制。
- 月面着陆 /
- 环月降轨 /
- 动力下降 /
- 轨道控制策略 /
- 定时定点着陆
Abstract:
Aiming at the problem of the probe's lunar landing, the control strategy of lunar orbit descent is studied. According to the control equations of the lunar orbit descent, the three kinds of relationship between the different combinations of the single-pulse control variables of the lunar orbit descent and the parameters of the lunar landing target are established. Three control strategies for lunar orbit descent, which are the fixed-point landing at the fixed time, the fixed-point landing and the landing at the target latitude area, are established. The algorithms and the procedures for solving the lunar orbit descent control strategies are presented. For the fixed-point lunar landing, the solutions of the single-pulse combined control of the semi-major axis and the lunar perigee height are analyzed. The control calculations of three kinds of lunar landings with the fixed-point at fixed time, the fixed-point, and the target latitude area are carried out respectively for the nominal orbit, the negative deviation orbit, and the positive deviation orbit, and the control strategies of the lunar orbit descent are verified. The strategies can be applied to the orbit control of the lunar landing mission, such as lunar landing, lunar sampling return, and manned lunar landing.
- lunar landing /
- lunar orbit descent /
- power descending /
- orbit control strategy /
- fixed-point landing at the fixed time

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图 1 探测器月面软着陆飞行过程示意图

Figure 1. Schematic diagram of lunar probe's soft landing flight process

下载: 全尺寸图片幻灯片

图 2 动力下降点的轨道平面偏差

Figure 2. Orbit plane deviation of power descending point

下载: 全尺寸图片幻灯片

图 3 法向脉冲修正轨道平面偏差

Figure 3. Normal impulse to correct orbit plane deviation

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图 4 环月降轨控制解示意图

Figure 4. Schematic diagram of lunar orbit descent control solution

下载: 全尺寸图片幻灯片

表 1 标称环月轨道的环月降轨控制参数

Table 1. Parameters of lunar orbit descent control for nominal orbit

着陆方式	ψ/(°)	θ/(°)	A/km	ΔT/s	λ/(°)	T	Δv(m·s^-1)
TP1	0	180	1 791.000	0.27	175.97	2018-12-30T08:54:00	23.250
TP1	-1.00	162.98	1 790.984	0.08	175.97	2018-12-30T08:54:00	23.250
TP2	0	180	1 791.000	-42.16	175.96	2018-12-30T08:59:27	23.590
TP2	-2.12	-163.85	1 790.838	-0.06	175.97	2018-12-30T08:59:27	23.590
P	0	180	1 791.000	0.27	175.97	2018-12-30T08:54:06	23.187
P	0	163.52	1 790.982	0.15	175.97	2018-12-30T08:54:06	23.187
LAT	0	180	1 791.000	0.27	175.97	2018-12-30T08:56:35	22.535

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表 2 -偏差环月轨道的环月降轨控制参数

Table 2. Parameters of lunar orbit descent control for negative deviation orbit

着陆方式	ψ/(°)	θ/(°)	A/km	ΔT/s	λ/(°)	T	Δv/(m·s^-1)
TP1	0	180	1 791.000	149.17	176.03	2018-12-30T08:47:00	27.189
TP1	-3.19	140.06	1 791.472	-0.01	175.97	2018-12-30T08:47:00	27.189
TP2	0	180	1 791.000	67.66	176.02	2018-12-30T09:00:30	27.584
TP2	14.57	-145.72	1 791.173	0.17	175.97	2018-12-30T09:00:30	27.584
P	0	180	1 791.000	535.61	176.09	2018-12-30T09:02:34	26.699
P	0	136.17	1 792.027	-277.74	175.97	2018-12-30T09:02:34	26.699
LAT	0	180	1 791.000	535.61	176.09	2018-12-30T08:54:01	22.101

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表 3 +偏差环月轨道的环月降轨控制参数

Table 3. Parameters of lunar orbit descent control for positive deviation orbit

着陆方式	ψ/(°)	θ/(°)	A/km	ΔT/s	λ/(°)	T	Δv/(m·s^-1)
LAT	0	180	1 791.000	-355.30	175.89	2018-12-30T08:59:07	22.970

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