现场总线控制系统的进步性及其实时性研究

Study of Fieldbus Control System and the Analysis of its Real-Time Character

现场总线控制系统 (FCS ,FieldbusControlSystem)是现代工业控制网络的发展方向。本文一方面从纵向的角度将现场总线控制系统与传统的集散控制系统 (DCS ,Dis tributedControlSystem)进行比较 ,研究其进步性 ;另一方面从横向的角度对不同现场总线的特点尤其是与实时性密切相关的媒体存取控制方法进行了对比探讨。

FCS is the direction of the development of modern industry control network.Fromthe point of lengthways view, this article firstly compares FCS to DCS and discusses its advancement; and from the point of transverse view,this article secondly discusses the different characters,fOcusing on the different methods of Meda Access Control, of popular FCS.