攻击角度和时间精确控制的制导律设计
收稿日期: 2024-06-04
修回日期: 2024-06-24
录用日期: 2024-07-19
网络出版日期: 2024-07-23
基金资助
国家杰出青年科学基金(62025301);国家自然科学基金(62373055);博士后创新人才支持计划(BX20230461);中国博士后科学基金面上资助(2023M740249)
Design of guidance law with precise impact angle and time control
Received date: 2024-06-04
Revised date: 2024-06-24
Accepted date: 2024-07-19
Online published: 2024-07-23
Supported by
National Science Fund for Distinguished Young Scholars(62025301);National Natural Science Foundation of China(62373055);Postdoctoral Innovative Talents Support Program(BX20230461);China Postdoctoral Science Foundation(2023M740249)
时空约束制导是指同时满足攻击角度和攻击时间约束的制导方式。针对导弹末制导问题,设计了一种具有精确控制能力的时空约束制导律。首先,基于最优落角约束制导律的剩余飞行时间估计式,在不依赖于小角度假设的情况下,逆向推导了剩余飞行时间可以精确预测的变增益落角约束制导律。其次,在该制导律的基础上增加攻击时间误差反馈项,设计得到了不存在指令奇异现象的时空约束制导律,实现了攻击角度和时间的同时精确控制。接着,引入剩余弹道长度作为自变量,将所提出的时空约束制导律拓展到了导弹速度大小变化的实际场景。最后,通过多组数值仿真算例,验证了所提制导律的有效性和优势。
董伟 , 易鑫 , 张后军 , 王春彦 , 邓方 . 攻击角度和时间精确控制的制导律设计[J]. 航空学报, 2025 , 46(4) : 330787 -330787 . DOI: 10.7527/S1000-6893.2024.30787
Spatial-temporal constrained guidance is a method that simultaneously meets impact angle and time constraints. To address the problem of missile terminal guidance, a spatial-temporal constrained guidance law with precise control capability is designed in this paper. First, based on the time-to-go estimation of the optimal impact angle constrained guidance law, a varying-gain impact angle constrained guidance law whose time-to-go can be precisely predicted is inversely derived without any small angle approximation. Second, an impact-time error feedback term is added to the above guidance law to obtain the singularity-free spatial-temporal guidance law for simultaneous precise control of impact angle and time. Third, by introducing the remaining trajectory length as an independent variable, the proposed spatial-temporal guidance law is extended to practical scenarios with missile speed variation. Finally, the effectiveness and advantages of the proposed guidance law are verified through several numerical simulations.
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