DCS 中英文翻译毕业论文控制系统.docVIP

英文翻译 DCSDCS Distributed Control System is the abbreviation of (Distributed Control System), automation industry in the country is also known as distributed control system.The so-called distributed control system, or in some of the information in the call distribution system, as opposed to centralized control systems, a new computer control system, which is a centralized control system based on the development, evolution and come. It is a process by the process control level and the composition of monitoring level communications network as a link to the multi-level computer systems, integrated computer, communication, display and control technologies such as 4C, the basic idea is decentralized control, centralized operations, hierarchical management , flexible configuration, and configuration easy. Function in the system, DCS, and centralized control systems are not very different, but in the realization of system functions methods are completely different.First, DCSs skeleton - the system network, which is the foundation and core DCS. As the network of the system for real-time DCS, reliability and scalability, play a decisive role, so the manufacturers have been careful in this area of ??design. For the DCS system network, it must meet the requirements of real-time, that is completed within defined time limits transmission of information. Here the word determine the time limit is in any case, the information transfer can be completed within this time limit, and this time limit is based on real-time controlled process requirements identified. Therefore, indicators of network performance measurement system is not the networks rate, known as bits per second (bps), but the real-time system network, which can ensure the long period of time to complete the required information transmission . System network also must be very reliable in any case, network communications are not interrupted, so most manufacturers of DCS were double bus, ring or dual star network topology.