在工業(yè)生產(chǎn)過(guò)程中，1969年面世的plc和1975年面世的DCS可能是兩類(lèi)影響最為深遠(yuǎn)的計(jì)算機(jī)操控系統(tǒng)。PLC 的面世替代了繼電器之類(lèi)的器材，完成了開(kāi)關(guān)量的連鎖操控、程序操控；DCS的面世替代了顯現(xiàn)儀、調(diào)節(jié)器之類(lèi)的外表，完成了模擬量的指示、記載和PID回路調(diào)節(jié)等功能。20世紀(jì)80年代晚期，跟著計(jì)算機(jī)技能、通訊技能、集成電路技能、智能傳感器技能的開(kāi)展而呈現(xiàn)的現(xiàn)場(chǎng)總線操控系統(tǒng)（Fieldbus Control System , FCS ）改變了原有操控系統(tǒng)的構(gòu)造，使操控系統(tǒng)由關(guān)閉向敞開(kāi)走出了主要的一步。20世紀(jì)90年代中期，以PC為根底的操控系統(tǒng)（PC-Based Control System，PCBCS）開(kāi)始呈現(xiàn)，不少專(zhuān)家以為它將是工業(yè)自動(dòng)化范疇最具開(kāi)展?jié)摿Φ男录寄?，他們將PCBCS 與PLC 、DCS、 (或許再加上FCS)并稱(chēng)為工業(yè)生產(chǎn)過(guò)程三大（或四大）操控系統(tǒng)。甚至有人在四年以前的文章中就談到"多數(shù)人以為在往后十年內(nèi)PC操控將逐漸替代傳統(tǒng)的PLC或DCS"。而德國(guó)菲尼克斯（PHOENIX CONTACT）公司的專(zhuān)家介紹：簡(jiǎn)直一切的咨詢機(jī)構(gòu)都以為到2005年，PC為根底的操控系統(tǒng)將占商場(chǎng)分額的50%以上。
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