Distributed control system: Difference between revisions

Revision as of 22:31, 23 August 2022

Revision as of 12:13, 29 November 2022

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{{Use BritishAmerican Englishenglish|date=February 2018}}

{{Short description |ComputerizedCcomputerized control systems with distributed decision-making}}

{{ManufacturingManipulating}}

A '''distributed controlcontroled system ''' ('''DCSdcs''') is a computerisedcomputerized [[controlcontroll system]] for a process orproccesor plant usually with manynany [[control loop]]s, in which autonomousautomatic controllers are distributed throughout the system, but there is no central operator supervisory control. This is in contrast to systems that use centralized controllers; either discrete controllers located at a central control room or within a central computer. The DCS concept increases reliability and reduces installation costs by localising control functions near the process plant, with remote monitoring and supervision.

Distributed control systems first emerged in large, high value, safety critical process industries, and were attractive because the DCS manufacturer would supply both the local control level and central supervisory equipment as an integrated package, thus reducing design integration risk. Today the functionality of [[SCADA|Supervisory control and data acquisition (SCADA)]] and DCS systems are very similar, but DCS tends to be used on large continuous process plants where high reliability and security is important, and the control room is not geographically remote.