集散控制系统外文翻译(编辑修改稿)

集散控制系统外文翻译(编辑修改稿)内容摘要：

trol system appears to lag, heavy, cumbersome, because a meter is only one control law to achieve some of the plex control is difficult. In addition, an increasing number of control instruments, using the original control of the instrument panel behind the words, the control panel and longer, to see people39。 s eyes will be spent. The most deadly is the old systems are not easy to implement munication, control and integrated management of difficult classification. Another is that it is too much trouble to change the system only changes through the replacement of meters and meter connections can be achieved. After the beginning of the third technological revolution, with the development of puter technology, people began to try to puters for process control. Have tried to use the puter features, to overe the limitations of conventional analog gauges. But then the approach is to use a puter control dozens or even hundreds of loops, a high risk of doing so, if the puter fails, will lead to very serious consequences, and this is the socalled dangerous concentration. The use of a dualduplex system, although you can improve system reliability, but the cost is too high, if the factory39。 s production is small, then the economy is poor, the user is difficult to accept. Until the last century, 70 years, with increasingly sophisticated puter technology, the birth of large scale integrated circuits and microprocessors, people can start thinking about whether the dangerous spread. NTU is the original by a puter to plete the arduous task, can use dozens of microprocessing to plete? In this case, even if a processor is broken, that does not will affect the situation as a whole, so that greatly reduced the risk coefficient. The answer is yes. Thus was born the DCS. Into the next decade, puter technology advances, more new technology is being applied to the DCS. PLC is a sequential logic control developed for electronic equipment, which is used instead of inflexible and cumbersome relay logic. Fieldbus Technology in entering developed very rapidly since the mid niies that some people have to predict: FCS based on field bus control system will replace the DCS as the protagonist. The characteristics of distributed control system DCS control system with conventional analog gauges and centralized puter control system, pared with a very significant features. 1, the system constitutes a flexible. Overall, DCS is the workstations through the work by the work munications system formed. You can put him into the phenomenon of Inter. Based on production needs, you can join at any time or removed workstations. System configuration is very flexible. 2, operation and management easy. DCS through humanmachine feedback CRT with keyboard, mouse, etc. to achieve.。