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李骥, 张洪华, 张晓文, 关轶峰. 基于偏航机动的常推力定点着陆制导方法[J]. 深空探测学报(中英文), 2024, 11(1): 47-55. DOI: 10.15982/j.issn.2096-9287.2024.20230026
引用本文: 李骥, 张洪华, 张晓文, 关轶峰. 基于偏航机动的常推力定点着陆制导方法[J]. 深空探测学报(中英文), 2024, 11(1): 47-55. DOI: 10.15982/j.issn.2096-9287.2024.20230026
LI Ji, ZHANG Honghua, ZHANG Xiaowen, GUAN Yifeng. A Constant-Thrust Guidance Method with Yaw Maneuver for Pinpoint Landing[J]. Journal of Deep Space Exploration, 2024, 11(1): 47-55. DOI: 10.15982/j.issn.2096-9287.2024.20230026
Citation: LI Ji, ZHANG Honghua, ZHANG Xiaowen, GUAN Yifeng. A Constant-Thrust Guidance Method with Yaw Maneuver for Pinpoint Landing[J]. Journal of Deep Space Exploration, 2024, 11(1): 47-55. DOI: 10.15982/j.issn.2096-9287.2024.20230026

基于偏航机动的常推力定点着陆制导方法

A Constant-Thrust Guidance Method with Yaw Maneuver for Pinpoint Landing

  • 摘要: 实现定点着陆终端位置速度六分量控制通常需要发动机推力可调。提出了一种通过偏航机动实现固定推力下的定点着陆制导方法。该方法通过偏转航向角,调节发动机输出在下降轨迹平面内的分量,从而实现航程控制;为了消除推力方向偏转产生的横向位置、速度偏差,设计了偏转角符号调整策略,使得着陆器在水平面内呈“之”字形运动,以一定推进剂为代价,最终保证了下降着陆终端位置、速度的全部可控。仿真表明,所提方法简单有效,易于工程实施。

     

    Abstract: To realize all the six components of terminal position and velocity control for pinpoint landing, throttleable engines are usually needed. In order to reduce economic cost and technique risk, a constant thrust guidance method with yaw maneuver for pinpoint landing was proposed in this paper. The range in the flight line was controlled by yaw maneuver which regulated the in-plane component of the thrust. And a strategy to change the sign of heading angle was performed to eliminate the position and velocity errors in the cross direction, which made the trajectory in horizon plane resemble the letter “W”. This method steered the spacecraft to a given target point with a little more fuel consumption. Simulation results show that the method proposed in this paper is easy to use and efficient.

     

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