战斗机超机动飞行自抗扰控制器设计

提出了一种利用自抗扰控制器算法在大包线范围内设计超机动飞行控制系统的新方法。根据奇异摄动理论和自抗扰控制器能够动态补偿系统模型扰动和外扰的特性,在超机动飞行的快慢子回路中分别引入自抗扰控制器,实现了快变量和慢变量的动态解耦控制。控制律设计直接依据超机动飞行的强耦合、强非线性模型,在很大的包线范围内不需要改变控制器的结构和参数,大大简化了设计过程。大包线范围内的大迎角机动仿真结果表明,系统具有良好的动态和稳态性能,控制器具有很强的鲁棒性,为解决大包线范围内的超机动飞行控制问题提供了一种新的途径。

Auto-Disturbances Rejection Controller Design of Aircraft Super-Maneuverable Flight

Using auto-disturbances-rejection-controller(ADRC),a new scheme is proposed to design an aircraft super-maneuverable flight controller in a big flight envelope.In terms of singular perturbation theory,the new scheme realizes the decoupling control of fast and slow state variables by applying ADRC in the fast and slow variables system to compensate the model disturbances and uncertainty.Based on the nonlinear model of aircraft and not caring whether the model is quite accurate,ADRC is specially fit for the super-maneuverable flight control design that is nonlinear and possesses inaccurate model.Furthermore,without changing the structure and parameters of controller in a big flight envelope,our scheme can simplify the design of the flight control system.The post-stall maneuver simulation results in the big flight envelope show that the close loop system achieves high dynamic performance and robustness performance.The design using ADRC brings a new method to solve the problem of super-maneuverable flight control.