摘要
针对存在时变参数不确定性和随机干扰的多输入不确定离散时滞系统,设计了基于LMI的滑模控制器以消除时滞的影响,并使系统状态在有限时间内收敛到零,然后对系统的不确定部分建立灰色估计模型,并进一步设计了灰色补偿器。仿真结果表明,采用所设计的灰色滑模控制器,不仅有效地消除了时滞的影响,抑制了时变参数不确定因素和随机干扰,而且保证多输入不确定离散时滞系统具有良好的鲁棒稳定性。
To the multi-input discrete uncertain time-delay system with time-varying parameter uncertainties and stochastic disturbance,the sliding mode controller is designed based on linear matrix inequality(LMI).The states converge to zero in limited time,so the affection of time-delay is eliminated.A grey estimation model is established and a compensator is designed for uncertain part of the system.Simulation results show that the method can eliminate state-delay effectively and reduce both time-varying parameter ...
出处
《控制工程》
CSCD
2008年第S2期42-45,共4页
Control Engineering of China
基金
博士点基金资助项目(20070338002)
关键词
滑模控制
多输入不确定离散系统
时滞系统
灰色模型
sliding mode control
multi-input uncertain discrete system
time delay system
grey model
