Adaptive augmentation of gain-scheduled controller for aerospace vehicles

• Published in: Journal of systems engineering and electronics 2013-04, Vol.24 (2), p.272-280
• Main Authors: Huang, Xiyuan, Wang, Qing, Wang, Yali, Hou, Yanze, Dong, Chaoyang
• Format: Article
• Language: English
• Subjects: Adaptive control systems; Augmentation; Control systems; Dynamical systems; Flight control systems; Lyapunov函数方法; Mathematical models; Nonlinear dynamics; Uncertainty; 增益调度; 控制器; 自适应增强; 航空航天飞行器; 隆胸; 非线性切换系统; 飞行控制系统
• ISSN: 1004-4132; 1004-4132
• DOI: 10.1109/JSEE.2013.00034

This paper proposes an adaptive augmentation control design approach of the gain-scheduled controller.This extension is motivated by the need for augmentation of the baseline gainscheduled controller.The proposed approach can be utilized to design flight control systems for advanced aerospace vehicles with a large parameter variation.The flight dynamics within the flight envelope is described by a switched nonlinear system,which is essentially a switched polytopic system with uncertainties.The flight control system consists of a baseline gain-scheduled controller and a model reference adaptive augmentation controller,while the latter can recover the nominal performance of the gainscheduled controlled system under large uncertainties.By the multiple Lyapunov functions method,it is proved that the switched nonlinear system is uniformly ultimately bounded.To validate the effectiveness of the proposed approach,this approach is applied to a generic hypersonic vehicle,and the simulation results show that the system output tracks the command signal well even when large uncertainties exist.