外文翻譯--工業(yè)控制系統(tǒng)和協(xié)同控制系統(tǒng)-其他專業(yè)-文庫吧資料
2025-01-27 10:07本頁面
【正文】 t. Special requirements on safety issues or a lack of manpower might turn the scale mercial. The necessity to interface special hardware, special timing requirements, the ‘having the code in my hands’ argument or the initial costs for mercial solutions will turn the scale collaborative. As long as collaborative approaches like EPICS stay up to date and run as stable and robust as mercial solutions, both will keep their position in the controls world in a plementary symbiosis. 北京化工大學北方學院畢業(yè)設計（論文） —— 外文文獻原稿和譯文 6 譯 文 工業(yè)控制系統(tǒng)和協(xié)同控制系統(tǒng) 當今的控制系統(tǒng)被廣泛運用于許多領域。北京化工大學北方學院畢業(yè)設計（論文） —— 外文文獻原稿和譯文 1 外文文獻原稿和譯文 原 稿 Industrial and collaborative control systems a plementary symbiosis Looking at today’s control system one can find a wide variety of implementations. From pure industrial to collaborative control system (CCS) tool kits to home grown systems and any variation inbetween. Decisions on the type of implementation should be driven by technical arguments Reality shows that financial and sociological reasons form the plete picture. Any decision has it’s advantages and it’s drawbacks. Reliability, good documentation and support are arguments for industrial controls. Financial arguments drive decisions towards collaborative tools. Keeping the hands on the source code and being able to solve problems on your own and faster than industry are the argument for home grown solutions or open source solutions. The experience of many years of operations shows that which solution is the primary one does not matter, there are always areas where at least part of the other implementations exist. As a result heterogeneous systems have to be maintained. The support for different protocols is essential. This paper describes our experience with industrial control systems, PLC controlled turn key systems, the CCS tool kit EPICS and the operability between all of them. Inroduction Process controls in general started at DESY in the early 80th with the installation of the cryogenic control system for the accelerator HERA (HadronElektronRingAnlage). A new technology was necessary because the existing hardware was not capable to handle standard process controls signals like 4 to 20mA input and output signals and the software was not designed to run PID control loops at a stable repetition rate of seconds. In addition sequence programs were necessary to implement startup and shutdown procedures for the plex cryogenic processes like cold boxes and pete pressor streets. Soon it was necessary to add interfaces to field buses and to add puting power to 北京化工大學北方學院畢業(yè)設計（論文） —— 外文文獻原稿和譯文 2 cryogenic controls. Since the installed D/3 system[1] only provided an documented serial connection on a multibus board, the decision was made to implement a DMA connection to VME and to emulate the multibus board’s functionality. The necessary
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