摘要
针对高超声速飞行器子系统与控制器异步切换问题,提出了一种鲁棒H∞控制策略.构造了依赖于控制器切换信号的Lyapunov函数,可以有效抵消由异步切换带来的控制器设计困难,结合平均驻留时间方法和Lyapunov函数方法,分析了系统的全局一致渐近稳定性和H∞性能指标,设计了异步切换的鲁棒H∞控制器.仿真结果表明,该方法实现高超声速飞行器在异步切换过程中对指令的精确跟踪,控制量在异步切换时刻无跳跃现象,同时对扰动具有较强的抑制作用.
A new robust H∞ control design method was presented for hypersonic vehicles under asyn chronous switching between the controllers and subsystems. A Lyapunov function dependent on switching sig nal of controllers was constructed, which could effectively counteract the intractable problem of controller de sign under asynchronous switching. Moreover, employing the average dwell time technique and Lyapunov function method, the globally uniformly asymptotically stable with the H∞ performance index was investigated, and the robustH∞ controllers were designed. Simulation results show that the robust H∞control system of hy personic vehicles provides satisfactory command tracking and avoids the state jumping under asynchronous switching with a high containment procedure for the turbulence.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2014年第2期177-182,共6页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目(61273083
60974014)
