推力矢量控制与飞机过失速机动仿真研究

A Study on the Thrust Vectoring Control and Aircraft's Post Stall Maneuver

非线性动态逆为非线性系统控制律的设计提供了一种重要手段。针对过失速机动飞机探讨了非线性动态逆方法在飞行控制系统设计中的应用。根据非线性动态逆的特点将飞机的动态特性分为快慢不同的状态变量。对快变量应用非线性动态逆进行控制律设计是将飞机气动控制面和推力矢量控制作为输入；慢状态变量控制律的设计是利用快状态变量作为输入。并采用伪逆的优化计算方法对各控制面的操纵权限分配进行了探讨。“Cobra”和“Herbst”两个过失速机动的实现证明该设计方法和仿真方法是成功的。

The nonlinear dynamic Inversion (NDI)provides an important means for the design of control law of nonlinear system. This paper discussed the application of this method in the design of flight control system for the post stall maneuver. According to the features of NDI, the aircraft's dynamics were divided into different state variables-fast and slow variables. The aerodynamic surfaces and thrust vectoring were used as inputs for the design of fast state variables control law, and the fast state variables were used as inputs for the design of slow state variables control law. The control effectors prioritization has been studied by means of pseudoinverse. Finally, the results of nonlinear simulation of two post stall maneuvers were presented.