3BSE005735R1 Decentralized control system
Decentralized control system is a process instrument control system specially designed for industrial process control, also known as distributed control system. According to the analysis of the development of programmable controller and DCS, the main application of distributed control system is continuous analog control, and the main application of programmable controller is the logic control of switching quantity. Therefore, there are certain differences in design ideas.
In factory automation or computer integrated process control system, in order to disperse risk and disperse function, a decentralized integrated control system structure is adopted. Programmable controller is a decentralized autonomous control system, which can be used as a subordinate computer to complete decentralized control functions, and has a qualitative leap compared with the centralized control of direct digital computer. This hierarchical control system is also the basis of decentralized control systems.
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