网络化时延补偿策略及其在三容系统中的应用  

Application of Network-Induced Delay Compensation Scheme to Three-Tank System

作　　者：杨艳丽[1] 陈虹[1] 高兴泉[1] 

机构地区：[1]吉林大学通信工程学院,长春130025

出　　处：《吉林大学学报（信息科学版）》2005年第6期615-620,共6页Journal of Jilin University（Information Science Edition）

基　　金：国家自然科学基金资助项目(60374027);国家863计划基金资助项目(2003AA412210)

摘　　要：网络诱导时延在网络控制系统中是不可避免的,并且对控制系统性能有非常重要的影响。为了解决网络化控制系统的时延问题,研究了具有时变传输时延的网络化控制系统的稳定性问题。时变的时延可以看作是平均时延和不确定时延之和。具有长时延的网络控制系统可以建模为具有结构不确定性的离散时间模型。基于这个模型,通过求解一个迭代linearm atrix inequality,给出了使闭环系统稳定的控制器。通过对三容系统的仿真研究,证实了所提方案的有效性。The problem of stabilization of networked control systems with time-varying transmission delays is investigated. Time-varying delays are regarded as the sum of the mean delays and uncertain delays, and networked control system with long time delays is modeled as a discrete-time model with structural uncertainty for its timevarying network-induced delays. Based on the model, a new control law via an iterative linear matrix inequality approach is presented which can stabilize the closed-loop system. Simulation results for three-tank system are given, which prove the validity of the design method.

关 键 词：网络化控制系统 时变时延 结构不确定性 时延补偿 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]