先进飞机非线性H_∞控制系统设计研究

Design Research on Advanced Aircraft Nonlinear H_∞ Flight Control System

应用无 DGKF简化条件的非线性 H∞ 控制器设计方法 ,为某型飞机设计了非线性 H∞ 飞行控制系统。为验证设计的有效性 ,在大迎角和两种飞行条件下 ,将非线性 H∞ 飞行控制系统与线性 H∞ 飞行控制系统的性能进行了对比闭环仿真研究。结果表明 ,非线性 H∞ 控制可使飞机的性能得到极大提高 ,且可保证飞控系统具有很强的鲁棒性。

The flight control system is designed for one model of advanced aircraft by using nonlinear H ∞ control design algorithms without the DGKF simplifying conditions. To verifying the valid ability, closed simulation comparisons between the performance of the nonlinear H ∞ flight control system and the linear H ∞ flight control system are made on the basis of aircraft dynamic response at high angles of attack and two flight conditions. The simulation results show that nonlinear controls can lead to not only significant improvements in aircraft performance, but also strong robustness to perturbation.