考虑自动驾驶仪动态鲁棒自适应变结构制导律

Robust adaptive variable structure guidance law considering autopilot dynamics

对于平面拦截问题,基于Lyapunov稳定性理论,应用滑模趋近律概念,将目标的机动加速度视为一类有界扰动,以视线角速率作为零输出状态变量,甚至不需要知道目标机动的界,考虑导弹自动驾驶仪的延迟,综合设计了一种具有强鲁棒性的末端导引规律。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,而且具有很强的鲁棒性和适应性,同时方法简单、易于理解,便于工程应用。

For the case of a planar interception a new guidance law with strong robustness is proposed. An adaptive variable structure guidance law is designed considering missile's dynamics of autopilot 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. The algorithm is very simple, so it is more convenient for comprehension and practical implementation. The simulation results show that the algorithm possesses strong robustness and adaptability.