基于滑模变结构的导弹制导律设计

为了实现导弹的精确打击，增强导弹的机动性，提出基于滑模变结构的导弹制导律。在设计趋近律时考虑到弹目距离的变化，使得系统状态轨迹快速且收敛到滑模面，并通过饱和函数替代符号函数抑制状态轨迹在达到滑模面时的抖动。仿真结果表明，滑模变结构方法相比于经典的比例导引方法，更能发挥导弹机动性并改善弹道，使导弹运动更加平滑。

Missile Guidance Law Design Based on Sliding Mode

In order to achieve missile’s precision strike with more mobility. A guidance law design based on sliding mode was proposed. The reaching law considered change of distance between missile and target to insure state trajectory convergence to equilibrium rapidly,and to suppress the tremor state trajectory, alternative sign function by saturation function when reaching sliding surface. The simulation results show that compared to the classical method of proportional navigation law,the sliding mode can bring the flexibility and improve ballistic missiles,and make the missile movement smoother.