摘要
研究了因特网拥塞控制中的鲁棒主动队列管理(AQM)控制器设计问题．基于Internet传输控制协议(TCP)拥塞避免机制的线性模型,根据AQM的设计要求,首先将此问题转化为鲁棒镇定问题;然后利用线性矩阵不等式(LMI)方法得出了动态输出反馈控制器存在的充分条件,并给出了相应的设计方法．最后,给出了控制器设计的算例并进行了仿真．仿真结果表明所得出的控制器是可行和有效的,它不仅对全部网络参数鲁棒而且过渡时间短．
This paper studied the problem of robust active queue management （AQM） controller design in Internet congestion control. The problem was first reduced to a robust stabilization one based on the linear model of transmission control protocol （TCP） and the AQM design objectives. A sufficient existence condition of the output feedback controller was then obtained and its design method was provided using linear matrix inequality （LMI） approach. Finally, a design example was given and the simulation was performed. The simulated results show that the proposed controller is feasible and valid for it possesses not only robustness for all the network parameters but fast settling process.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2006年第5期485-489,共5页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(No.60374001 No.60334030)
关键词
鲁棒控制
线性矩阵不等式
主动队列管理
拥塞控制
时滞
robust control
linear matrix inequality
active queue management
congestion control
delay
