集散控制系統(tǒng)外文翻譯-全文預(yù)覽
【正文】 soldiers. They just follow orders accurately and precisely report the situation to higher authorities to plete the mission. As for its exchange with the host puter is through the analog signal or fieldbus digital signal. Because analog signals in the transmission process, there are some more or less distortion or interference, so by popular fieldbus for DCS signals. Process control level Also known as the basic field control unit or controller, is the core part of the DCS system. Relied on the regulation of production processes are achieved. Such as regulating the opening and closing valves, sequence control, continuous control and so on. Speaking of field control level is above the soldiers, then it is in mand of the process control level. It accepts signals ing from field control level, control law in accordance with the requirements of puting technology, and the results sent to the scene as a control signal level control device. Therefore, the process control level to have a smart brain, able to soldiers to analyze the feedback of the military, and then make an order to make the soldiers can win war. his level is not the highest, equivalent to the army39。s a great privilege, you can monitor the operation of various departments, the use of historical data and realtime data to predict the various situations that may occur from the overall interests of business to help business executives make decisions to help panies achieve their program objectives. DCS system background 4039。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 t
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