摘要
提出了网络化串级控制系统的概念,并针对一类基于现场总线的网络化串级控制系统进行了研究.在网络诱导时延小于和大于一个采样周期的情况下,分别利用增广状态向量法,将系统建模为有限维离散时间线性时不变系统.最后,通过工业过程控制中的一个串级控制实例分析,说明了该建模方法的有效性.
The concept of networked cascade control system （NCCS） is presented and a class of NCCSs based on fieldbus is studied. When the network-induced delay is less than and more than one sampling period, the augmented state vector method is used respectively to model the system as a finite-dimensional discrete-time LTI （ linear timeinvariant） system. Finally, a cascade control example in industrial process control is analyzed to show the effectiveness of the presented modeling method.
出处
《信息与控制》
CSCD
北大核心
2007年第3期273-277,共5页
Information and Control
关键词
网络化串级控制系统
增广状态向量
网络诱导时延
建模
networked cascade control system （NCCS）
augmented state vector
network-induced time delay
modeling
