【作者】 杨洪勇； 张福增； 林相泽； 宗广灯；

【Author】 Yang Hongyong Zhang Fuzeng Lin Xiangze Zong Guangdeng (Department of Computer Science and Technology, Yantai Normal College, Yantai 264025, China) ( Department of Automatic Control Engineering, Southeast University, Nanjing 210096, China) ( Institute of Automation, Qufu Normal University, Qufu 273165, China)

【机构】 烟台师范学院计算机学院； 东南大学自动控制系； 曲阜师范大学自动化研究所；

【摘要】 把Internet网络拥塞控制系统看作一个具有时滞的闭环反馈系统,建立了一个PID控制器作为网络的主动队列管理(AQM)策略调节网络连接节点的拥塞率．网络系统利用时间误差平方积分准则调整PID控制器的参数,使控制器能在线自适应网络系统中的变化,从而有效地控制网络系统的数据传输．仿真表明新的AQM策略能很好地把连接节点的队列控制到期望的队列长度,并且对网络的负载扰动和参数变化具有很强的鲁棒性．更多还原

【Abstract】 Internet congestion control system is considered as a closed-loop feedback system with time-delay. A proportional-integral-differential (PID) controller is then established as active queue management (AQM) scheme to adjust the congestion marked possibility at the links in Internet, whose parameters is auto-tuned by applying the minimization of an integral criterion for adapting the change of the network system. The simulations show that the new AQM scheme can control the size of the queue in the buffer to an expected length and has the robustness for the loading perturbation and the parameter change in the network.更多还原