带末端角度约束的离散滑模制导律设计

为了提高导弹的命中精度,基于平面内弹目运动方程的离散形式,设计了一种带有角度约束的离散滑模制导律;基于李雅普诺夫理论分析了滑模制导的稳定性与可达性条件;然后将该制导律与带有角度约束的离散比例制导律进行比较,结果表明,设计的制导律更满足角度约束条件且具有更小的脱靶量,最后采用蒙特卡洛仿真验证了该制导律的普遍适用性。

Design of Discrete Sliding-Mode Guidance Law with Terminal Angle Constraint

In order to achieve accurately attacking the target,in this article a method of discrete sliding-mode guidance laws with attack angle constraint was designed based on the discrete form of the target and missile relative motion equation in plane.The stability and accessibility of the guidance system is analyzed by Lyapunov stability theory.Then the digital simulation result of it was compared with the discrete proportional guidance law of terminal angular constraint.It showed that the guidance law proposed here can satisfy the demanded impact angle and miss distance.At last,Monte Carlo simulation is used to examine its widely practicability.