Abstract: In order to overcome the disadvantages of the traditional PID controller of the active queue management,e．g．,the difficulty of parameters tuning,this paper proposed an internal model control－based PID controller.The key feature of the present PID controller lies in that only one parameter needs to be tuned.Furthermore,by applying the present method into the network congestion control,this paper constructed a new Active Queue Management（AQM） algorithm,IMC－PID algorithm.Simulation results show that IMC－PID has stronger robust performance and quicker queue adjusting velocity.

摘要： 针对传统主动队列管理中PID控制存在的参数不易整定等缺点,通过引入内模控制思想,提出了一种基于内模控制的PID控制器（IMC－PID）,其突出特点是控制器仅有一个参数需要整定。将IMC－PID应用于网络拥塞控制中,得到了一种新的主动队列管理（AQM）算法——IMC－PID算法。仿真实验表明,IMC－PID算法有较强的鲁棒适应性及较快的队长调节速率。