飞机俯仰运动指令驾驶H_∞鲁棒控制器

H_∞Robust Controller of Instruction Steering for Pitching of Aircraft

指令驾驶是第三代战斗机的飞行控制系统中广泛采用的一种基本工作方式,对减轻驾驶员负担和提高驾驶员控制效能有积极的意义。首先介绍了指令驾驶系统的组成结构和工作原理,讨论了利用H∞混合灵敏度方法设计鲁棒控制器的基本算法。然后进行了人机闭环系统建模,并基于H∞混合灵敏度方法设计了指令驾驶系统的指针偏转规律,给出了详细的控制算法和设计步骤。最后,在某型飞机的俯仰运动控制工作方式下,进行了人机闭环系统仿真。

Instruction steering is a fundamental working mode that is adopted widely in flight control system of third-age fighter.It can reduce the burden of pilot greatly and help pilot to achieve better controlling effect.Firstly,this paper introduces the structure and working theory of instruction steering system,and discusses the algorithm of H_∞mixed sensitivity method which is the solution for H_∞robust controller.Afterwards,we conduct the modeling to pilot-aircraft colsed system,and design the rule of pointer deflection based on H_∞mixed sensitiveity method.The detailed arithmetic and procedures are presented in the paper.At last,simulation of pilot-aircraft closed system is conducted at the working mode of pitching control of certain type aircraft.