拦截导弹自适应动态滑模制导

An Adaptive Dynamical Sliding-mode Guidance Law of Interception Missiles

对于平面拦截问题,提出了一种具有强鲁棒自适应性的动态滑模制导律。将目标机动视为一类具有有界扰动的不确定因素,以视线法向上的相对运动速度及其导数构筑滑模切换面,并基于Lyapunov稳定性理论进行制导律的设计,由于采用了动态滑模的思想,有效降低了抖振的影响。理论分析与数字仿真表明该制导律具有优良的弹道特性,可对连续高机动目标进行有效拦截,同时控制结构相对简单,易于工程实现。

For planar interception problem,a dynamical sliding-mode guidance law with strong robustness is proposed.The target maneuver is regarded as a bounding disturbance and the relative velocity normal to line of sight and its derivative are chosen as the sliding-mode switching surface,then the dynamical sliding-mode guidance law is derived based on Lyapunov stability theory.Because of the usage of dynamical sliding-mode,the chattering is greatly reduced.This guidance law has good trajectory characteristic and can intercept the continuous high-maneuvering target effectively.The simulation results also show that this guidance law has strong robustness and adaptability and is easy for practical implementation.