基于自抗扰控制的BTT导弹自动驾驶仪设计

Bank-to-Turn Missile Autopilot Design Based on Active Disturbance Rejection Control

针对具有非线性、时变、强耦合和不确定性的Have Dash II BTT导弹控制系统,基于自抗扰控制理论,设计了一种新的BTT导弹鲁棒控制器。利用输入输出反馈线性化,将导弹控制系统分解成了3个单输入单输出的二阶子系统,输出变量的选取保证了系统是最小相位系统。采用自抗扰设计方法,估计并补偿系统中的不确定因素和三通道之间的耦合,以实现控制目的。仿真结果表明该BTT导弹驾驶仪具有良好的动态特性和强鲁棒性。

Focusing on the control system of the Have Dash II BTT missile,which is nonlinear,time-varying,strongly coupled and uncertain,a new BTT missile robust controller is presented based on the active disturbance rejection control.By employing the input-output feedback linearization,the missile control system is divided into three subsystems with single-input single-output and second-order feature,and the selection of output variables guarantees that the system is minimum phase.The active disturbance rejection controller is designed to estimate and compensate the uncertainties and couplings among the three control channels in the subsystems for the achievement of control.The simulation results show that the proposed BTT autopilot has good dynamic performance and strong robustness.