防空导弹侧向姿态变结构控制器研究

Research on Variable Structure Control in Slide Attitude Control of Antiaircraft Missile

为处理垂直发射防空导弹快速转弯时侧向姿态控制系统产生大攻角导致的弹体气动参数非线性变化和三通道交叉耦合,将非线性作为被控对象线性模型参数的小范围随机摄变,并采用抑耦法对交叉耦合作等效处理,应用部分状态反馈和变结构控制方法设计了一种变结构控制系统。仿真结果表明,该变结构控制器的快速性和鲁棒性均优于传统PI控制器。

To solute the nonlinear change of aerodynamic parameters and cross coupling among three channels caused by large angle-of-attack of slide attitude control system in vertical launching missile while fast turning, a variable structure control system was designed by partial status feedback and variable structure control while the nonlinear was treated as small random parameter disturbance of linear model for the controlled object, and the cross coupling was dealt with method of coupling suppressing, The simulation results showed that the variable control system designed had faster response and better robustness than tradition PI controller.