阵风扰动下大柔性飞行器姿态跟踪控制设计

Attitude control of a very flexible aircraft with gust disturbance

大柔性飞行器是一类高空长航时飞行器,机翼展弦比大、柔性程度大。文中首先对非线性的大柔性飞行器模型进行线性化与降阶,之后对得到的模型进行模型参考自适应控制器的设计。在设计模型参考自适应控制律之前,首先设计线性二次型调节器(LQR)控制器,接着考虑不确定性,在LQR控制器的基础上,构造参考模型,设计模型参考自适应控制律。仿真结果显示,在阵风扰动下,模型参考自适应控制器能良好地跟踪俯仰角。

Very Flexible Aircraft is a class of High Altitude Long Endurance aircraft,with large aspect ratio and great flexibility. In this paper,the nonlinear model of a Very Flexi-ble Aircraft is linearized and reduced. Then the model reference adaptive controller is des-igned for the obtained model. Before designing the model reference adaptive control law,a linear quadratic regulator（LQR）is designed firstly.Then,considering uncertainties,a r-eference model is constructed based on the LQR,and a model reference adaptive control l-aw is designed. The simulation results show that the model reference adaptive controller can track the pitch angle well with gust disturbance.