过失速大机动飞机的飞行控制律设计

对新一代带推力矢量的战斗机在大迎角过失速机动下的飞行控制律进行设计,并进行了机动指令飞行仿真。引进推力矢量技术,建立带推力矢量的飞机模型方程;采用奇异摄动理论,将控制回路分为两个快慢(内外)回路,对每个回路分别用动态逆方法进行飞行控制律设计;并采用结构奇异值μ综合和分析的方法对快(内)回路设计了鲁棒控制器;最后所设计的控制律进行了机动指令飞行仿真,仿真结果表明设计的过失速机动控制律良好。

DESIGN OF FLIGHT CONTROL LAWS FOR A POST- STALL SUPER- MANEUVERABLE FIGHTER AIRCRAFT

In this paper, large angle - of - attack super - maneuverable flight control laws are designed for a vectored thrust fighter aircraft. Upon the laws, flight simulation is done with the given maneuverable commands. First, the model of aircraft is built with the technology of vectored thrust. Then, the whole control loop is separated into fast and slow sub - loops and the flight laws of each sub - loop are designed with the method of nonlinear dynamic inversion separately. Next, a robust controller is designed with structured singular value synthesis method for the inner fast control sub -loop. Finally, the above designed control laws are used to simulate according to the given maneuverable command. The simulation results show that the designed super - maneuver-able control laws achieve a high level of performance.