基于变结构控制的自适应制导律

Adaptive Guidance Law Based on Variable Structure

对于平面拦截问题,文中选择以视线角速率作为零输出状态变量,将目标的机动加速度视为一类有界扰动,基于变结构控制,提出了一类鲁棒自适应制导律。由于该算法不需要知道目标机动加速度的精确信息兼顾了导弹自动驾驶仪动态,因而具有更强的鲁棒性和适应性。理论分析与数字仿真表明这种制导律不但具有平直的弹道特性,而且同时方法简单、易于理解,便于工程应用。

For the case of a planar interception,this paper proposes a new guidance law with strong robustness and adaptability,based on an adaptive trending-law of sliding-mode.The maneuvering acceleration of target is regarded as a disturbance with boundary,and the LOS (Line of Sight) angular rate is chosen as the output state to be controlled to zero in the guidance law,and meanwhile autopilot dynamics of missile is considered.The guidance law is very simple,so it more convenient for comprehensible and practical im...