基于变结构控制理论的BTT导弹自动驾驶仪的三通道独立设计

对于倾斜转变导弹而言，现有的自动驾驶仪三通道独立设计方法都是在忽略通道间耦合关系前提下根据经曲控制理论的单变量频域方法设计的。本文基于变结构自适应控制理论。提出一种新的ＢＴＴ导弹自动驾驶仪三通道独立设计方法，该方法不仅在其设计过程中保留了通道间的全部耦合因素，而且控制律完全基于被控对象参数变化的上下界，无需对系统进行在线参数辨识，从而提高了设计的准确性，增强了系统的适应性和鲁棒性。运用所提出的方法

A NEW AUTOPILOT DESIGN METHOD FOR BANK-TO-TURN MISSILES BASED ON THE VARIABLE STRUCTURE CONTROL THEORY

For Bank-to-turn(BTT)missiles,all the autopilot 3-channel independence design methods having presented are single input frequency methods based on the classical control theory,which need omit all the coupling relationship among the three channels of an autopilot.A new autopilot 3-channel independence design method,which is based on the variable structure adaptive control theory,is proposed in this paper.All the coupling factors among the channels are reserved during the design coures, and the control laws gotten from the method totally depend on the maximums and minimums of plant's parameter variations,which makes no need of on-line parameter identification and improves the accuracy of the design and the robustness of the control systems. Paper using the method proposed here and considering many non-ideal factors of control actuators,rato gyros and accelerometers,a 3-channel autopilot of a BTT-90 missile is designed,and some satisfactory digital simulation results are presented.