无动力动能弹命中角约束变结构导引律研究

Variable Structure Guidance Logic Research on No-power Kinetic Energy Projectile with Impact Angle Constraints

基于变结构控制理论推导得出一种命中角约束下的导引律。以某型动能弹为例,分别针对固定目标和慢速移动目标开展了弹道仿真。计算结果发现,无论是打击固定目标还是慢速移动目标,动能弹都能够以指定的终端角度准确命中,而且命中目标时,动能弹的攻角和侧滑角均保持为0°,有利于提升动能弹的打击效果。动能弹在整个过程中,过载、攻角和侧滑角均满足限制条件,说明该弹着角约束导引律是可行的。

Guidance logic with impact angle constraints is deduced based on variable structure control theory. One kinetic energy projectile is used, and the trajectory simulation is developed for attacking fixed target and moving target. The resuh shows that even though for different targets, the projectile could acutely impact the targets in required angles, and the final angle of attack and slide angle were close to 0°. It is propitious to improve the effect of impact. During the flight of projectile, the over load, angle of attack and slid angle all satisfy the limit conditions. The feasibility of the guidance logic is validated.