【導讀】System），在國內(nèi)自控行業(yè)又稱之為集散控制系統(tǒng)。式控制系統(tǒng)的基礎上發(fā)展、演變而來的。作、分級管理、配置靈活以及組態(tài)方便。在系統(tǒng)功能方面，DCS和。作用，因此各廠家都在這方面進行了精心的設計。這里所說的“確定”的時間限度，是指在無論何種情況下，制過程的實時性要求確定的。因此，衡量系統(tǒng)網(wǎng)絡性能的指標并不是。的DCS均采用雙總線、環(huán)形或雙重星形的網(wǎng)絡拓撲結構。的節(jié)點數(shù)量大若干倍。DCS的操作員站是處理。督、控制、維護的網(wǎng)絡節(jié)點，其主要功能是提供對DCS進行組態(tài)，的工作狀態(tài)之下。統(tǒng)組態(tài)功能，可以說，沒有系統(tǒng)組態(tài)功能的系統(tǒng)就不能稱其為DCS。DCS自1975年問世以來，已經(jīng)經(jīng)歷了二十多年的發(fā)展歷程。這二十多年中，DCS雖然在系統(tǒng)的體系結構上沒有發(fā)生重大改變，傳統(tǒng)意義上的DCS現(xiàn)在僅僅是指生產(chǎn)過程控制這一部。DCS采用開放式，標準化、模塊化和系列化設。場總線的FCS將取代DCS成為控制系統(tǒng)的主角。是控制中心和列車之間發(fā)送報文的載體。

　　

【正文】 local or a puter failure, you can run the system without affecting the case of line replacement, rapid troubleshooting . (5) coordination between the various stations of various data transmission through the munication work, the whole system of information sharing, coordination of work to plete the control system39。s overall functionality and optimization. (6) control functional control algorithm rich set of continuous control, sequence control and batch control in one, can be realized cascade, feedforward, decoupling, adaptive and predictive control, advanced control, and easily add the necessary Special control algorithms. The position of DCS approach is flexible, managed by a dedicated puter stations, operator stations, engineering stations, recording station, site controller and data acquisition stations and other ponents, but also by a mon server, industrial puter and programmable controller was. At the bottom of the process control level are generally distributed onsite controllers, data acquisition stations, data acquisition and control in place, and through the data munications work to monitor and control level puter. Production control level on the data from the process control level centralized operations management, such as various optimization, statistical reports, fault diagnosis, alarm and so on. With the development of puter technology, DCS can follow a more highperformance needs and puter equipment connected through the work to achieve more advanced centralized management features, such as planning and scheduling, warehouse management, energy management. DCS in the development and application of state at home and abroad In 1975, the largest . panies Honeyw ell instrument control to the world launched its first integrated distributed control system TDC2020 (Toal D ist ribu ted Con t ro l 2020), published in the system, immediately aroused the . industrial control munity highly, calling it the most inspiring event. Major panies around the world quickly followed, introduced one by one distribution system, from process control to enter a new era of distributed systems. During this period the Japanese Yokogawa introduced CEN TUM, the United States Taylor Instrument Company MO S203。, Fischer39。s DC201。 400, Bailey39。s N 90, Foxboro Cpect rum and the German pany Siemens Company Telepermm. With microputer and puter works in particular, the rapid development of technology, coupled with fierce petition of the manufacturers, so that DCS quickly from the first generation of the 70s to the early 90s the development of the third generation of DCS. Although distribution systems before that the technical level is already high, but there is a major drawback is: the major panies introduced dozens of models of the system, almost all of the pany39。s patented product, each pany in order to protect their own interests, patents are used in the work, which is the whole plant, the management of enterprisewide cause problems. As puters and web development panies to make more use of the control puter technology business, late 8039。s many panies introduced a new generation of distributed control system, whose main feature is a new system of local work using MA P Agreement。 Intelligent variable reference transmitter with fieldbus structure。 in the control software on the order of the introduction of PLC control and batch control, the DCS also has the function of PLC. Countries in the early 90s to the DCS are well known: 3000, Bailey39。s IN FI90, Ro semoun t of the RS3, W est Hoo se of WDPF, L eeds amp。 Non th rup the MAX1000, Foxbo ro39。s I246。AS , Japan, Yokogawa39。s CEN TUM. Mentioned here are largescale DCS, in order to meet the market needs a lot of the development of small and medium manufacturers of DCS systems such as S9000, MAX2, LXL, A 2 PACS and more. Currently DCS are: Xinhua XDPS, Luneng LN2020, State Power Zhishen DCS, the control DCS, and when Lee DCS, Nanjing Branch far DCS, from Zhejiang and so on. There Westinghouse abroad (Emerson) ovation, FOXBORO, ABB, Siemens PCS7, Honeywell, Yokogawa DCS and so on.