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现阶段,随着计算机网络技术的快速发展,网络安全问题也越来越突出,尤其是TCP网络拥塞,已逐渐成为影响TCP网络快速发展的关键。文章针对这一现象,提出了一种基于自适应滑膜控制的主动队列管理算法,使网络拥塞及其带来的影响通过状态预测器进行及时消除。另外,考虑到通常很难获得网络系统不确定性上界,就此提出一种自适应律以适应系统的不确定的上界,并在此基础上设计了一个滑膜控制器。经仿真实验结果表明,该方法优于传统的PID控制和滑模控制,能获得良好的暂态和稳态响应。
At this stage, with the rapid development of computer network technology, network security problems are more and more prominent. Especially TCP network congestion has gradually become the key to the rapid development of TCP network. In view of this phenomenon, this paper presents an active queue management algorithm based on adaptive sliding-film control, which makes the network congestion and its impact eliminated in time through the state predictor. In addition, considering that it is usually difficult to obtain the upper bound of the uncertainty of the network system, an adaptive law is proposed to accommodate the uncertain upper bound of the system. Based on this, a synovial membrane controller is designed. The simulation results show that this method is superior to the traditional PID control and sliding mode control and can obtain good transient and steady state response.