高超声速飞行器的非线性预测控制

Nonlinear predictive control for hypersonic aircraft

针对高超声速飞行器非线性、多变量、强耦合的特征,将广义预测控制应用于其纵向模型的控制中。对模型进行输入输出反馈线性化,利用基于泰勒展开的有限时间预测控制方法,设计轨迹跟踪预测控制律,使其飞行的高度和速度跟踪控制指令。通过matlab仿真验证了该方法在参数不确定性的条件下,具有一定的鲁棒性,能满足系统的性能要求。

Considering longitudinal hypersonic aircraft with nonlinearity, muhivariability and strong coupling, the generalized predictive control method is applied. First, the hypersonic aircraft mode is transformed into an affine system through input-output feedback linearization. Then based on a Taylor expansion predictive control method, generalized control law is designed to make its height and speed control instructions tracked. Finally, the simulation results show that the method has strong robustness and can meet the system performance requirements under the condition of parameters uncertainty.