自适应模糊H_∞控制在导弹自动驾驶仪中的应用

Application of Self-Adaptive Fuzzy H_∞Control in Missile Autopilot

自适应模糊H∞控制在导弹自动驾驶仪中的应用,通过对攻角求二阶导数,得到导弹输入-输出动态模型,同时将模糊系统简变为单输入逻辑系统。设定攻角变化范围,并将其作为模糊系统的唯一输入变量。根据系统的带宽,在控制器中加入低通滤波器,以保证系统跟踪效果,过滤控制信号中频率过高部分。仿真证明,该应用可得到导弹飞行动态的精确数学模型。

Self-adaptive fuzzy H∞control is applied in missile autopilot. The input-output dynamic model for missile was achieved by getting second-order derivative through angle of attack; and the fuzzy system was simplified into single input logic system at the same time. The conversion range of angle of attack was set up and considered as the only input variation of fuzzy system. According to the system bandwidth, the low pass filter was added in controller to assure the tracking effect of system and filter the super-high frequency in control singles. The simulation proved that the precise math model of dynamic missile flight could be achieved by this application.