基于改进人工势场法的再入制导方法

doi:10.12305/j.issn.1001-506X.2023.07.27

摘要/Abstract

摘要：

针对带有禁飞区的高超声速飞行器再入制导问题, 基于改进人工势场法(artificial potential field method, APFM)提出一种再入制导方法。在纵向上, 将动压、过载、热流过程约束视为“虚拟障碍”, 将终端高度、速度视为“虚拟目标点”进行纵向轨迹设计。然后, 改进纵向人工势场函数以适应跳跃式和平衡滑翔式再入两种弹道形式的轨迹设计。为了整体考虑禁飞区对三维轨迹的影响, 设计双层预测-校正算法求解待调参数。仿真结果表明, 所提出的改进APFM规划方法能够适应不同类型的禁飞区形状, 相比现有方法可适应横程需求更大的目标点, 参数调节简单, 易于工程实现。

关键词: 再入制导, 禁飞区, 虚拟障碍, 改进人工势场法

Abstract:

Aiming at the reentry guidance of hypersonic vehicles with no-fly zones, a three-dimensional guidance method is proposed based on the improved artificial potential field method (APFM). In the longitudinal direction, dynamic pressure, overload, and heat flow process constraints are regarded as virtual obstacles, and terminal altitude and speed are regarded as virtual target. Then, the longitudinal artificial potential field function is improved to adapt to the trajectory design of skip reentry trajectory and quasi-equilibrium gliding trajectory. A double layer predictive-correction algorithm is designed to solve the adjustable parameters to consider the effect of no-fly zones on three-dimensional trajectory. The simulation results show that the proposed improved APFM can adapt to different types of no-fly zone shapes. It can adapt to target points with larger crossrange requirements than existing methods. The parameters are simple to adjust and easy to implement in engineering.

Key words: reentry guidance, no-fly zones, virtual obstacles, improved artificial potential field method (APFM)

中图分类号:

V448

权申明, 王松艳, 晁涛, 杨明. 基于改进人工势场法的再入制导方法[J]. 系统工程与电子技术, 2023, 45(7): 2158-2169.

Shenming QUAN, Songyan WANG, Tao CHAO, Ming YANG. Reentry guidance method based on improved artificial potential field method[J]. Systems Engineering and Electronics, 2023, 45(7): 2158-2169.

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参数	起点状态	终点状态
经度	0	70
纬度	0	0
高度	120	15
速度	7 500	1 000
倾角	0	0
偏角	-90	—

方法	终端经度/(°)	终端纬度/(°)	待飞射程/km
本文方法	84.542 5	19.956 4	222.148
方法1	82.246 8	16.671 5	639.107
方法2	80.811 1	13.681 1	995.568
GPOPS	84.979 0	20.156 5	200.999

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