【作者】 张士娟； 孙金生；

【Author】 Shijuan Zhang,Jinsheng Sun School of Automation,Nanjing University of Science and Technology,Nanjing,210094

【机构】 南京理工大学自动化学院；

【摘要】 针对固定参数PID主动队列管理算法的性能在网络系统参数与控制器设计参数不匹配时性能不能令人满意的问题,提出了一种自适应PID主动队列管理算法,通过调整积分控制系数和实时修正丢弃概率,改善了网络拥塞控制系统的响应速度和稳态性能。仿真结果表明,与PI、PID、REM等算法相比,本文提出的自适应PID算法在快速性、稳态性能、链路利用率等方面均有提高,且在各种网络环境下均有令人满意的性能更多还原

【Abstract】 Considering that the performance of fixed parameter PID active queue management algorithm was unsatisfactory when the control parameters were unmatched with the network parameters,a new adaptive PID active queue management algorithm is proposed.It improves the response speed and steady state performance of the network congestion control systems through the adaptive adjusting of integrator control parameter and real-time amending of drop probability.Simulation results show that the performance of proposed adaptive PID is superior to that of PI,PID, REM at response speed,steady state performance,utilization of bottleneck,et al.And it has satisfactory performance under various network entironment.更多还原