A Robust AQM Controller Design for Various Delay Networks

被引：0

作者：

Wang Xiuli ^{[1
]}

Wang Yongji ^{[2
]}

机构：

[1] Cent Univ Finance & Econ, Sch Informat, Beijing 100081, Peoples R China

[2] Chinese Acad Sci, Inst Software, Beijing 100190, Peoples R China

来源：

PROCEEDINGS OF THE 29TH CHINESE CONTROL CONFERENCE | 2010年

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Robust Control; Parameter Adaptive; D-stability; Active Queue Management; Time-delay; SUPPORTING TCP FLOWS;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The existing active queue management (AQM) algorithms are not well adapted to the uncertainty of the time-delay networks. When an algorithm designed for the small time-delay network (LAN) is used for a large-delay networks (WAN, Internet), its performance is normally poor. This paper presents a robust AQMdesign algorithm based on the D stability region to overcome this issue. The TCP/AQM model meeting various time-delay is first established. Secondly, a set of desired D-stable regions in the complex plane is specified and then a numerical optimization algorithm with various time-delay constraints is run to find the controller parameters such that all the roots of the closed-loop system are within the specified regions to reduce the queuing delay and improve the effective throughput. Compared with the PI controller via experimental simulations, the novel AQM algorithm is indeed more efficient and robust in various delay networks.

引用

页码：6043 / 6046

页数：4

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