具有末端角约束的鲁棒制导律设计

Design of the robust guidance law with terminal angle constraint

针对某些导弹要求限制命中点角度的作战要求,设计了具有末端角度约束的制导律。将系统结构摄动和目标加速度视为外部干扰量,基于Lyapunov稳定性理论推导了一种满足L2增益指标的鲁棒制导律。仿真表明,当目标以较大加速度机动时仍然能满足末端角度和精度的要求,并且不需要任何目标运动信息,对目标机动有较好的鲁棒性。

According to the requirements of some types of missiles which attack target with specified angle at the terminal point, a guidance law with angular constraint is designed. System perturbation and target acceleration are regarded as an exogenous disturbance, then the guidance law which meets the performance of L2 gain is achieved by Lyapunov method. Simulation results show that both the precision and impact angle are met well even when target maneuvers with a large acceleration. And the guidance law has no use for any target information and shows a good robustness.