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根据防空导弹打击目标的作战特点,提出一种基于RBF网络的带终端落角约束的最优滑模变结构导引律。首先应用最优控制理论和变结构控制理论设计基于视线角和视线角速度的最优滑模变结构导引律,然后应用RBF网络对所设计导引律中的变结构项的增益进行调节。仿真结果表明,所提出的导引律不仅能减弱系统抖振,而且能够同时满足命中精度和命中期望角的要求,对目标机动具有很好的鲁棒性。
According to the combat characteristics of anti-aircraft missile strike targets, a RBF-based optimal sliding mode variable structure guidance law with terminal corner constraint is proposed. Firstly, the optimal sliding mode variable structure guidance law based on line-of-sight and line-of-sight angular velocity is designed by using optimal control theory and variable structure control theory. Then, the gain of variable structure item in the designed guidance law is adjusted by RBF network. The simulation results show that the proposed guidance law can not only weaken the chattering of the system, but also meet the requirements of hitting precision and hitting expected angle, and have good robustness to the target maneuver.