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针对高超声速飞行器飞行高度和飞行马赫数变化范围大,其数学模型具有严重非线性、不稳定性、多变量耦合以及不确定的空气动力学参数等特点,提出了动态面控制方法为其设计飞行控制系统。该方法通过构造动态面变量并根据能达条件,来设计中间的虚拟控制信号和最终的控制信号。通过在控制律设计过程中增加一阶动态滤波器,避免了设计过程中对非线性虚拟控制信号的微分,大大减少了控制律的计算量。并以某常规高超声速飞行器纵向模型为对象进行仿真。仿真研究表明该控制方法较好的实现了高超声速飞行器对指令信号的跟踪。
Due to the large range of flight altitude and flight Mach number of hypersonic vehicle and its mathematical model with serious nonlinearity, instability, multivariable coupling and uncertain aerodynamic parameters, the dynamic plane control method is proposed for its design flight Control System. The method designs the middle virtual control signal and the final control signal by constructing dynamic surface variables and according to the reachable condition. By adding a first-order dynamic filter in the control law design process, the differential of the nonlinear virtual control signal in the design process is avoided and the computational cost of the control law is greatly reduced. The simulation is performed on a longitudinal model of a conventional hypersonic vehicle. The simulation results show that this control method can better realize the tracking of the command signal by the hypersonic vehicle.