不确定时滞互联网中的滑模AQM算法  

Sliding Mode AQM Algorithm for Internet with Uncertainties and Time Delay

作　　者：闫明[1] 冯春杨[1] 

机构地区：[1]辽宁大学轻型产业学院,辽宁沈阳110036

出　　处：《控制工程》2013年第6期1098-1101,共4页Control Engineering of China

基　　金：辽宁省自然科学基金项目(201202092)

摘　　要：为了解决互联网中的拥塞现象,提出了一种滑模主动队列管理算法(Active Queue Management,AQM)。考虑到互联网中存在的各种不确定和时变时滞因素的影响,基于互联网拥塞控制模型,利用线性矩阵不等式(Linear Matrix Inequality,LMI)设计了一个渐近稳定的滑模面,有效地克服了这些时变因素的不利影响。基于趋近律的方法设计了控制器,该控制器能够有效地抑制路由器中队列长度的振荡。仿真对比结果表明,该算法具有更好的稳定性和鲁棒性,能够适应时变的互联网环境。最后给出了滑模主动队列管理算法在大型电力企业远程监控网络中的应用效果。Abstract ： In order to solve the congestion phenomenon in Internet, a sliding mode active queue management （AQM） algorithm is pro posed. Considering the effect of uncertainty and time varying delay factors in Internet, an asymptotically stable sliding surlhce is de signed by linear matrix inequality （LMI） based on the lnternet congestion control model. It can effectively overcome the ett）ect of these time varying factors. The controller is designed by the way of reaching law, which can effectively constrain the oscillation of the queue length in router. Simulation contrasts demonstrate that the proposed algorithm possesses better stability and robustness, and it can adapt to the lime varying Internet environment. An application effect of the proposed sliding mode AQM algorithm in a large electric power enterprise remote monitoring and control network is given.

关 键 词：互联网拥塞控制 滑模控制 主动队列管理 线性矩阵不等式 趋近律 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]