导弹高度控制系统的变结构设计

飞行高度是评价导弹性能的一项重要战术指标。传统的导弹高度控制系统采用PID控制，但对超低空掠海飞行的导弹，必须处理好各种干扰问题。为此提出了采用变结构高度控制的方法。介绍了导弹的高度控制系统的变结构设计。仿真结果表明，本方法设计简单，且有优良的鲁棒性，效果比PID控制优越，易于实现数字控制等优点。

Design of missile altitude control system with variable structures

Flying height is an important tactic index of missile performances. The traditional design method of a missile altitude control system is the PID control, which does not satisfy the demand of some control systems. The disturbance issues must be solved when a missile flies at a low altitude over sea. Hence, the altitude control system design of the missile with variable structures is introduced. Simulation results suggest that this design is feasible and robust. The performance of variable structure control is better than that of PID control. Moreover, it is easy to implement digital control of missiles.