带扰流片旋转稳定弹制导律研究

Research on Guidance Law of Spin-stabilized Projectile With Spoiler

针对带扰流片旋转稳定弹转速很高造成运动响应方向与控制力作用方向存在偏差,导致制导方法设计困难的问题,为发展适用于带扰流片旋转稳定弹的制导方法,提出了一种基于速度追踪和参数优化的制导律。根据带扰流片旋转稳定弹的六自由度弹道模型,仿真分析了在制导律作用下弹丸的弹道特性和命中精度。仿真结果表明:所设计的制导律能够导引弹丸命中目标,满足控制精度要求,可有效减小干扰条件下的落点散布,提高射击密集度,且控制过程中扰流片方位角变化平缓,易于实现。

Due to the high revolution of the spin-stabilized projectile with spoiler,there is a deviation between the motion response direction and the direction of the control force,which brings great difficulties to the design of guidance method.Aiming at this problem,a guidance law based on velocity tracking and parameter optimization was proposed in order to develop a guidance method for spin-stabilized projectiles with spoiler.According to the six degree of freedom trajectory model of the spin-stabilized projectile with spoiler,the ballistic characteristics and hit accuracy of the projectile under the guidance law were simulated and analyzed.The results show that the designed guidance law can guide the projectile to hit the target,meet the control accuracy,effectively reduce the impact point dispersion under the interference condition and improve the firing density.The change of the azimuth angle of the spoiler is smooth in the control process,which is easy to be realized.