高阶控制导弹自适应滑模制导律

Adaptive Sliding-Mode Guidance Law for High-Order Controlled Missiles

为改善制导精度,提高对目标信息滤波器估计误差的鲁棒性,提出了一种滤波器加自适应滑模制导律的设计方法。滤波器提供制导律执行所需的必要信息,如目标加速度等,而自适应滑模制导律进一步增强对信息估计误差的鲁棒性,同时由于采用了自适应设计,避免了对干扰或误差上界保守估计所带来的制导性能损失。滤波器和滑模制导律从一般意义上进行设计,可适用于拦截导弹和目标具有高阶控制动态的情形。基于Monter Carlo法进行了仿真验证,结果表明相比于最优制导律具有较强的鲁棒性和制导性能优势。

In order to improve guidance performance and robustness of the estimation error of target information, an approach of integrated filter and adaptive sliding-mode guidance law is presented. The filter provides nec tive sliding-mode essary information for the guidance law, guidance law improves robustness of the such as target acceleration et al, and the adap- estimation error of target information. Adaptive control method is introduced to guidance law design which can avoid guidance performance lost from con- servative estimation of system disturbances or errors bounds. The filter and sliding-mode guidance law are deduced in general form and are adapted to interception missile and target with high-order linear control dynamics. Based on Monte Carlo method, simulations are carried out and the results show that as compared to optimal guidance law, the proposed approach has better guidance performance and improved robustness.