PLC、DCS、FCS三大控制系统

Three major controlling systems of PLC,DCS and FCS

FCS是由PLC发展而来的；而在另一些行业,FCS又是由DCS发展而来的,所以FCS与PLC及DCS之间有着千丝万缕的联系,又存在着本质的差异。本文试就PLC、DCS、FCS三大控制系统的特点和差异作一分析,指出它们之间的渊源及发展方向。

FCS is developed from PLC,while in other fields FCS is derived from DCS.As a result there are very com- plicated connections among them,but on the other hand they have great varieties in essence as well.This article tries to analyze the character and difference among these three major controlling systems and discuss their origins and devel- oping directions.