自适应Smith补偿器在基于IP的网络控制系统中的应用  

Adaptive Smith compensator for NCSs over IP networks

作　　者：陈鹏[1] 戴连奎[1] 

机构地区：[1]浙江大学工业控制技术国家重点实验室智能系统与决策研究所

出　　处：《控制理论与应用》2006年第1期115-118,共4页Control Theory & Applications

摘　　要：在基于IP网络的网络控制系统(NCS s)中,网络诱导时延变化显著且往往大于一个采样周期.本文引用数据通信中应用广泛的网络回程时间来估计NCS s中时变的全回路网络诱导时延,并提出了一种新的自适应Sm ith补偿器.仿真结果表明,该补偿器能够有效地消除网络诱导时延变化对控制性能的负面影响;结合该自适应Sm ith补偿器所设计的控制系统能够获得很好的控制性能与较强的鲁棒性.In networked control systems （NCSs） over IP networks, the network-induced delay often varies dramatically and might be longer than a sampling period. The concept of round trip time, which is widely used in data communication, is introduced to estimate the varying network-induced delay, and a novel adaptive Smith compensator is developed in this paper. Simulation results show that the proposed compensator can avoid the negative impacts of the varying network-induced delay on control performances, and the control system with the adaptive Smith compensator can provide good performances and strong robustness.

关 键 词：网络控制系统 网络诱导时延 回程时间 SMITH补偿器 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]