基于滑模干扰观测器的近空间飞行器非线性广义预测控制

近空间飞行器(NSV)的飞行包络很大，特别在高超声速飞行过程中，系统将具有强烈非线性 、耦合性和快速时变性，同时将受到较大的外干扰及不确定性影响，这对控制系统提出了很 大的挑战。为此，提出了基于滑模干扰观测器(SMDO)的非线性广义预测控制(NGPC)策略，将 滑模控制的强鲁棒性和预测控制良好的动态性能相结合，设计了高超声速条件下NSV的姿态 制导控制律，进一步仿真实验，结果表明该飞控系统具有良好的控制性能和抗干扰能力。

The Research of SMDO based NGPC Method for NSV Control System

As the flight scale of Near-Space Vehicle (NSV) is extremely large, especially the velocity is hypersonic, the system must have strong nonlinearity, coupling and fast time-variability and be influenced by strong disturbance and uncertainty. It is a big challenge for the control system. Therefore, Sliding Mode Disturbance Observer (SMDO) based Nonlinear Generalized Predictive Control (NGPC) strategy which combines the robust of Sliding Mode Control and the upstanding dynamic character of Predictive Control together is raised and the control law is designed for the hypersonic NSV attitude control system. Simulation result shows that this flight control system has nicer control characters and high disturbance repellence.