变体飞行器有限时间切换H∞跟踪控制

针对变体飞行器变形过程中的跟踪控制问题，基于切换线性变参数控制理论建立了变体飞行器模型。为了抑制变形过程中控制器切换和不确定性的影响，保证闭环系统有限时间有界同时满足指定的H_∞性能指标，基于模态依赖平均驻留时间方法和多Lyapunov函数方法，提出一种切换有限时间H_∞跟踪控制器的设计方法，并分析了系统的有限时间鲁棒稳定性，通过求解线性矩阵不等式得到控制器存在的充分条件。仿真结果表明，所提方法能够使飞行器系统准确跟踪指令，且对于控制器切换和不确定性具有鲁棒性，降低了控制器设计的保守性。

Finite-time H∞ Tracking Control for Switched Morphing Aircraft

Considering the tracking control problem in the process of configuration transformation of morphing aircraft,a morfing aircraft model is developed based on switched linear parameter-varying (LPV) theory.In order to suppress the influence of cotroller switching and uncertainties and ensure that the closed-loop system is finite-time bounded with the given performance index,a finite-time tracking controller design method with switching is developed based on mode-dependent average dwell time (MDADT) method and multiple Lyapunov function method.The finite-time robust stability of the system is analyzed.The sufficient existing conditions of controller can be obtained by solving the linear matrix inequality (LMI).Simulated results show that the aircraft system is able to track command signal accurately by using the proposed method,and is robust to controller switching and uncertainties,thus reducing the conservativeness of controller design.