基于HSTCP协议的PI算法稳定性分析  

The Stability Analysis of PI Algorithm Based On HSTCP Protocol

作　　者：谢景伟[1] 

机构地区：[1]湖南大众传媒职业技术学院,湖南长沙410100

出　　处：《计算机仿真》2010年第9期109-111,124,共4页Computer Simulation

摘　　要：在研究计算机网络技术中,对高速网络建立的HSTCP流体流模型,将PI算法运用于模型中,组成反馈控制系统,且作为系统的控制部分,实现对队列的调度和管理,再根据控制系统稳定性的充分必要条件和参数空间方法来确定PI控制器参数与网络参数的关系,并确定稳定边界条件,最后通过NS-2仿真实验证明在稳定区域内,系统的稳定性好,能够基本达到对系统稳定性的要求,而对满足稳定区域外的参数,系统根本达不到对系统稳定性的要求,说明采用该方法确定PI控制器参数是可行的。Apply PI algorithm into the model based on the HSTCP Fluid flow model in the high speed network,and compose feedback control system and achieve the scheduling and queue management as part of the control system. Then make sure the relationship of PI controller parameters and network parameters according to the sufficient and essential condition and a parameter space method in control system stability,and determine the stable boundary condition satisfied by the PI parameter. Finally,NS-2 simulation results show that the stability is good in the region of stability,and can basically meet the requirements of system stability. But due to the parameters outside the region,the system can not meet the requirements. It illuminates that the proposed method which is used to determine parameters of PI controller is feasible.

关 键 词：高速网络 主动队列管理 稳定性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]