高超声速制导炮弹复合制导方法研究

Research on Compound Guidance Method of Hypersonic Guided Projectile

提出一种基于弹道跟踪中制导律和弹道成型末制导律的复合制导方法。基于高超声速制导炮弹质心运动方程,在方案弹道上生成虚拟点作为位置跟踪指令点,得到速度角的指令,并设计一种滑模变结构控制系统跟踪速度角指令。采用一种基于弹道成型制导率的末制导方案,使制导炮弹在弹道终点以大弹着角命中目标。仿真结果表明,该制导方案能够对方案弹道进行有效跟踪,在对目标精确打击同时满足大落角约束条件。

A compound guidance method based on trajectory tracking guidance method and trajectory shaping guidance law was proposed.The scheme trajectory was tracked by modifying the direction of deflection angle.Based on the kinematic equation of the hypersonic guided projectile,the command of deflection angle was obtained by generating a virtual point on the scheme trajectory.Then,a sliding mode controller was proposed in the process of scheme trajectory tracking.To improve the lethality of warhead,a guidance law'trajectory shaping'was introduced to restrict the impact angle.Simulation results show that the guidance scheme not only effectively track the scheme trajectory but also satisfied with the demands of impact position and angle constraints.