Abstract: As for the problem of congestion control in Transmission Control Protocol（TCP） networks，a sliding mode congestion control scheme is proposed.Based on the TCP networks congestion control model，an asymptotically stable sliding surface is designed by Linear Matrix Inequality（LMI）.The sliding surface can compensate for the effect of the uncertainties in TCP networks.In addition，an improved reaching condition is proposed in order to constrain oscillation of the queue length in router.Simulations are done in different scenarios.The results show that the proposed scheme has better stability and robustness than common sliding mode congestion control scheme.

摘要： 针对TCP（Transmission Control Protocol，传输控制协议）网络中的拥塞控制问题，提出了一种滑模拥塞控制策略。基于TCP网络拥塞控制模型，利用线性矩阵不等式设计了一个渐近稳定的滑模面，该滑模面能够补偿TCP网络中的不确定性因素的影响。另外，为了减小路由器中队列长度的振荡，提出了一种改进的到达条件。多种情况下的仿真实验表明，所提出的控制策略与普通的滑模拥塞控制策略相比具有更好的稳定性和鲁棒性。