基于载机视觉信息的改进视线制导律设计  

Design of improved line-of-sight guidance law based on aircraftvisual information

作　　者：张文稳 张成[1,2] 郑晨明[1] 程润北 陈天乐 ZHANG Wenwen;ZHANG Cheng;ZHENG Chenming;CHENG Runbei;CHEN Tianle(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;Key Laboratory of Dynamics and Control of Flight Vehicle,Ministry of Education,Beijing 100081,China;Shanghai Institute of Aerospace System Engineering,Shanghai 201109,China)

机构地区：[1]北京理工大学宇航学院,北京100081 [2]飞行器动力学与控制教育部重点实验室,北京100081 [3]上海宇航系统工程研究所,上海201109

出　　处：《系统工程与电子技术》2024年第8期2779-2788,共10页Systems Engineering and Electronics

摘　　要：针对无人机机载武器低成本精确打击的需求,提出利用机载光电吊舱获取制导信息、采用视线制导法进行制导律设计的方案。通过分析载机、导弹和目标的运动关系,建立了系统状态空间模型,基于反步法和滑模控制设计了改进视线制导律。对制导律中无法由载机获取的参数进行了讨论,采用跟踪微分器提取视线角并估计视线角速度信息。数值仿真结果表明,在视线角存在噪声且导弹矢径拉偏的情况下,改进视线制导律仍可保证对地面目标的精准打击。与传统视线制导律相比,载机的运动方向不受限制,可在发射导弹后远离目标以免受到威胁,符合现实需求。For the demand of low-cost precision strike of unmanned airborne weapons,the proposal of using airborne optoelectronic pods to obtain guidance information and using line-of-sight(LOS)guidance method for guidance law design is proposed.By analyzing the motion relationship of the carrier aircraft,missile,and target,a system state space model is established,and an improved LOS guidance law is designed based on the backstepping method and sliding mode control.The parameters in the guidance law that cannot be obtained by the aircraft are discussed.The tracking differentiator is used to extract the LOS angle and estimate the LOS velocity information.Numerical simulation results show that the improved LOS guidance law can still ensure the accurate strike on the ground target in the presence of LOS angle noise and missile vector pull-off.Compared with the traditional LOS guidance law,the movement direction of the aircraft is not limited,so it can stay away from the target after missile launching to avoid being threatened,which meets the practical demand.

关 键 词：视线制导 反步法 滑模控制 机载空地导弹 跟踪微分器 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]