摘要
针对飞航式导弹飞行速度快、作用时间短,加之飞行过程中环境因素复杂等控制难题,提出了一种混合型模糊PID控制算法结合经典PID控制算法的数字式导弹舵机控制方法。控制策略采用位置-速度双环控制,位置环采用混合型模糊PID控制算法,只需获得舵面位置误差及位置误差的改变,即可通过相应的模糊控制算法,使系统的动态性能得到显著的提高,并且该控制算法中的PI单元有效地抑制了系统的超调及稳态误差;速度环采用具有不完全微分结构的经典PI算法,使得系统抗干扰能力得到了提升,有效地改善了系统幅频曲线、相频曲线等频域特性。仿真和地面台架实验均验证了该方法的有效性。
Considering the characteristics of high speed,short response time and complex external environment of winged missile,a control method,combined with Mixed Fuzzy-PID control arithmetic and traditional PID arithmetic,was proposed for the digital missile rudder servo system.The control strategy includes two closed loops,namely the position loop and the speed loop.Mixed fuzzy-PID control arithmetic was used in the position loop.With the obtainment of position error and the change rate of position error of the rudder,the dynamic properties of the system can be effectively improved through the fuzzy control strategy,and the PI control unit of the fuzzy-PID controller can remove the steady state error of the system immediately.To reduce high-frequency disturbance and to improve frequency-domain characteristics of the system,such as frequency-amplitude curve and frequency-phase curve,incomplete differential arithmetic was introduced in the speed loop.Finally,the results of both simulation and relative experiments verify the validity of the proposed strategy.
出处
《微特电机》
北大核心
2011年第6期51-55,共5页
Small & Special Electrical Machines
关键词
导弹舵机
混合型模糊PID控制算法
不完全微分
位置环
速度环
missile rudder
mixed fuzzy-PID control arithmetic
incomplete differential arithmetic
position loop
speed loop
