Introduction To Distributed Control Systems

Distributed control system is a new generation of instrument control system based on microprocessor, adopting the design principle of decentralized control function, centralized display operation, and taking into account the design principles of division and autonomy and comprehensive coordination. Distributed control system is referred to as DCS, which can also be directly translated as "distributed control system" or "distributed computer control system".
It adopts the basic design idea of ​​decentralized control, centralized operation and management, and adopts a multi-layer hierarchical, cooperative and autonomous structure. Its main features are its centralized management and decentralized control. DCS has been widely used in various industries such as electricity, metallurgy, and petrochemicals.
System introduction
DCS usually adopts a hierarchical structure, each level consists of several subsystems, and each subsystem achieves several specific limited goals to form a pyramid structure.
Reliability is the life of DCS development. There are three main measures to ensure the high reliability of DCS: first, widely use high-reliability hardware equipment and production processes; second, widely adopt redundant technology; third, widely implement system fault-tolerant technology, fault self-diagnosis and automatic processing technology in software design. The MTBF of most distributed control systems today can reach tens of thousands or even hundreds of thousands of hours.