具有时滞网络系统的滑模控制

针对TCP(传输控制协议)网络的拥塞控制问题,采用滑模控制理论提出了一种新的主动队列管理算法.考虑到网络中同时具有状态时滞和输入时滞的线性TCP动态系统,首先利用特殊变换将原不确定时滞系统转化为无时滞系统.在新的坐标下,设计了一个最优的滑动模面,而且所选择的控制律能够有效抑制路由器中队列长度的振荡,实现准确的跟踪.仿真结果进一步证实了该控制策略的可行性.

On the Sliding Mode Control for Time-Delay Network Systems

To solve the problem of congestion control in TCP(transmission control protocol) networks,a novel active queue management(AQM) algorithm is presented on the basis of sliding mode control theory.Considering the TCP linear dynamic systems with state delay and input delay,a particular linear transformation is applied to the original uncertain time-delay system to turn it into a delay-free system.Then,an optimal sliding hyperplane is designed in a new coordinate system and the control law is chosen to constrain...