高超声速飞机纵向通道的多级模糊逻辑控制

针对飞行过程中高超声速飞机的纵向模型具有不稳定的动态特性,多变量之间的强耦合以及易变的模型参数,采用多级模糊逻辑控制为其纵向通道设计飞行控制系统。该系统由控制内环和控制外环组成,控制内环用于稳定纵向的飞行姿态,控制外环可以确保高超声速飞机对指令信号的准确响应,将两者结合起来设计的飞控系统具有高度非线性解耦控制能力。因其控制过程不依赖于高超声速飞机的精确模型,故保证了系统的强鲁棒性能。仿真研究表明,该控制系统可以维持高超声速飞机的纵向稳定性能。

Longitudinal Multistage Fuzzy Logic Control for Hypersonic Vehicle

Aimed at the unstable dynamics characteristic,multi-variable strong coupling and easily changed model parameters for hypersonic vehicle in the flight process,the flight control system based on longitudinal multistage fuzzy logic control designed for hypersonic vehicle includes the control inner loop and control outer loop,and the control inner loop is used to stabilize longitudinal flight attitude,then the control outer loop ensures hypersonic vehicle track the commands accurately.The flight control system designed to combine the control inner loop and the control outer loop has highly nonlinear control ability,and because its controlled process does not rely on the precise model of the hypersonic vehicle,its strong robustness can be guaranteed.The simulation demonstrates that the control system can provide the longitudinal stability performances and improve the manipulating qualities for the hypersonic vehicle.