超机动飞机非线性建模仿真与操纵特性分析

Nonlinear Modeling Simulation and Control Characteristic Analysis for a Super-maneuverable Aircraft

研究建立较为准确的超机动飞机非线性模型,对新型战斗机的研发具有重要意义。在分析超机动飞机非线性特性的基础上,建立了带推力矢量的超机动飞机非线性动态模型,着重分析了气动力、气动力矩以及发动机的建模过程。为改善系统的动态特性,采用动态逆结合PID的方法设计了超机动飞机在大迎角机动下的控制律,并进行了"眼睛蛇"机动仿真。根据"眼镜蛇"机动的仿真结果,分析了超机动飞机在大迎角飞行时操纵特性,证明了所建立模型的合理性与有效性。

Building an accurate model has important significance to the study of the new fighter airplane.On the basis of analyzing the nonlinear characteristic,the nonlinear dynamic model of a super-manenverable aircraft with thrust vector is established,and the modeling process of the aerodynamic forces,aerodynamic moments and the engine is emphatically analyzed.The control method of combining dynamic inversion control with PID control is proposed for super-manuverable flight,and the ＂Cobra＂ maneuver is simulated.According to the simulation results,the control characteristics of the super-maneuverable flight under the condition of high angle of attack are analyzed,and the rationality and validity of the model building are proved.