基于固定时间一致的攻击时间协同制导律  

Attack Time Cooperative Guidance Law Based on Fixed Time Consensus

作　　者：李晓静[1] 马建伟[1] 高计委 LI Xiaojing;MA Jianwei;GAO Jiwei(Henan University of Science and Technology,Luoyang 471000,China)

机构地区：[1]河南科技大学,河南洛阳471000

出　　处：《电光与控制》2023年第6期30-35,共6页Electronics Optics & Control

基　　金：国家自然科学基金(62073124);航空科学基金(2018 0142001)。

摘　　要：针对多个导弹攻击机动目标问题,提出一种带有攻击时间约束的固定时间协同制导律。首先,建立平面弹目运动几何模型,分析视线方向导弹加速度与剩余飞行时间之间的关系,基于一阶一致性设计固定时间协同制导律;其次,将目标机动视作有界外界干扰,利用固定时间收敛观测器对其进行估计,并将干扰估计值应用到协同制导律的设计中,以削弱干扰上界引起的抖振;最后,通过数值仿真验证了所设计固定时间协同制导律的有效性。To solve the problem of multiple missiles attacking a maneuvering target,a fixed-time cooperative guidance law with attack time constraints is proposed.Firstly,the geometric model describing the relative motion between the missiles and the target in the longitudinal plane is established.The relationship between the missiles'radial acceleration in line-of-sight direction and time-to-go is analyzed.The fixed-time cooperative guidance law is designed based on first-order system consistency.Secondly,the target's maneuver is seen as the bounded external disturbance,and a fixed-time convergence observer is used to estimate it.The estimated value is applied to the design of the cooperative guidance law to reduce the chattering phenomenon caused by the upper bound of the disturbance.Finally,the effectiveness of the fixed-time cooperative guidance law is verified by numerical simulation.

关 键 词：固定时间一致 剩余飞行时间 固定时间观测器 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]