为了实现最佳毁伤效应,导弹一般同时要求具有较高的制导精度和与战斗部相匹配的落角。基于导弹末端视线角速度和落角多约束条件,文中结合滑模变结构控制和反演法设计了一种反演滑模制导律。建立了导弹与目标相对运动方程和末端视线角速度及落角多约束下的线性化模型,采用反演滑模设计方法设计了制导律,最后进行了六自由度数字仿真,结果表明该制导律能有效实现期望落角和中靶精度,满足设计要求。

In order to achieve best damage, high precision of guidance and impact angle matching with warhead are required.In this paper, a backstepping-sliding-mode guidance law was designed based on sliding-mode variable structure control and the method of backstepping under multiple constraints of terminal LOS-rate and impact angle.The equation of relative motion between missile and target and the linearized model based on the constraints of terminal LOS-rate and impact angle were established, the guidance law was designed by backstepping-sliding-mode.Finally, 6DOF simulation of missile shows that the guidance law can realize the expected impact angle and hitting precision effectively, meeting the requirements of design.