为了提高经典三回路自动驾驶仪的性能,对采用尾舵控制的弹体对象设计了切换增益变结构控制自动驾驶仪。采用切换增益变结构控制的闭环响应特性对弹体参数的变化不敏感。控制量是光滑的避免了对执行机构有害的频繁切换。采用增益调度技术可以容易的获得全空域的控制器设计。仿真结果表明了设计方法的有效性。

A pitch plane switching-gain variable structure autopilot was designed for a missile controlled by aero tails to improve the performance of classical three-loop autopilot. The close-loop response is insensitive to parameter variation of missile body by applying switching-gain variable structure methodology. The control signal is smooth without high-frequency oscillation which is disadvantageous for actuators. The controllers for all flight envelopes can be easily achieved when gain-scheduling is used. The simulation result shows that the design method is valid.