飞机翼面损伤的L1自适应重构控制方法研究

L1 Adaptive Reconfiguration Control for Aircraft Control Surface Failure

进行飞机翼面损伤下的重构控制对提高飞机的安全可靠性具有重要的意义,传统的自适应重构控制方法易产生高增益和高频震荡,提出一种基于L1自适应控制的重构控制方法,可同时满足快速自适应和鲁棒性特点;首先根据翼面故障对飞机气动特性的影响,建立故障参数模型,然后根据L1自适应控制快速自适应和鲁棒性的特点,选择合适的自适应律和滤波器进行重构控制器的设计,最后根据飞机升降舵翼面损伤情况进行仿真分析,结果表明文中所用方法可以进行部分翼面损伤的重构控制,能够快速响应和抑制高频震荡,重构控制取得了满意的效果。

It is important for reconfiguration control in the presence of control surface failure as it will influence the flight safety of the aircraft. The classic adaptive control theory can bring high gain and frequency oscillation question. So, L1 adaptive reconfiguration control method is proposed, which can allows for arbitrary fast adaptation and robustness. Firstly, according to control surface failure impacting the aerodynamic parameter, the failure model is built. Then, based on of adaptive and robust characteristics, the adaptive law and filter are chosen, in order to design controller. Finally, Simulation on the elevator failure aircraft shows the reconfigurable control operates well, and can eliminate the high gain and restrain the high frequency oscillation.