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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。
In order to solve the congestion in the Internet, a sliding queue active queue management algorithm (Active Queue Management, AQM) is proposed. Considering the influence of various uncertainties and time-varying delay in Internet, based on Internet congestion control model, an asymptotically stable sliding mode surface is designed by using linear matrix inequality (LMI) The adverse effects of these time-varying factors. Based on the approach of the approach, a controller is designed, which can effectively suppress the oscillation of the queue length in the router. Simulation results show that the algorithm has better stability and robustness, and can adapt to the changing Internet environment. Finally, the application of sliding mode active queue management algorithm in remote monitoring network of large power enterprises is given.