一类网络化串级控制系统的分析与建模
Analysis and Modeling of a Class of Networked Cascade Control System
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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．Abstract: 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 time-invariant) system.Finally,a cascade control example in industrial process control is analyzed to show the effectiveness of the presented modeling method.
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