摘要
针对电视制导侵彻炸弹需要控制弹着角的要求,研究了具有末端落角约束的变结构制导律.该制导律包含了重力对弹道法向加速度的影响,将制导指令经过一阶低通滤波器滤波,实现对弹体攻角的估计.通过数学仿真,讨论了制导律参数对制导效果的影响,检验了制导律在不同投弹条件和不同期望落角下的制导效果.仿真结果表明,所采用的攻角估计方法是可行的,该制导律能够满足侵彻炸弹在攻击固定目标时对脱靶量和弹着角的双重要求.
According to the problem that terminal angular of video-guided penetrating bomb was required to be controlled, the variable-structure guidance law with terminal angular constraint was derived, which included the influence of the gravity on the normal acceleration of trajectory. The angle-of-attack was estimated by the method that the guidance instruction passed through a first order low pass filter. Through computer simulation, the influence of the guidance law parameters on the guidance performance was discussed. The effect of guidance law was tested under the conditions of different bomb release method and different expected impact angle. The simulation shows that the angle-of-attack estimation method is feasible, and that the guidance law can meet the demands of terminal miss distance and impact angle when the penetrating bomb attacks a fixed target.
出处
《弹道学报》
EI
CSCD
北大核心
2006年第2期9-14,共6页
Journal of Ballistics
关键词
电视制导
侵彻炸弹
末端落角约束
变结构
制导律
video guidance
penetrating bomb
terminal angular constraint
variable-structure
guidance law
