有關(guān)現(xiàn)場總線控制外文資料翻譯(參考版)
2025-05-17 00:37本頁面
【正文】 while in the auto mode, output values are regulated by the predesigned control algorithms. It is worth mentioning that the outputs of PLC are always incremental values. Although autotuning PID controllers can be employed here, manual tuning is always used at the beginning of the production for routine initialization, and after that the system is switched to the auto mode. We emphasize that user39。s production, and still guaranteed the system had very advanced at the same time. Bottom layer of control is not any longer an unaided anode. It joins automation control system, processing controllingmanagement system with enterprise resource planning system to apply technology of Industrial Ether and fieldbus, as a result, the data acquisition capacity and flexibility improved, the problem on control system information shortage and integration of autocontrol system and enterprise management system solved, the qualification to realize integration of ERP and managementcontrol system presented. During the designing of the electricity control system, the thesis used the mode that made up of monitor system and control system, formatted a work that is bined by far concentrates control system and nearly control system .The monitor system chooses the functional monitoring software 一 the king monitor and the manmachine interface ,which operated conveniently .And the control system chooses dependably programmable logic controller and advance Profibus fieldbus to pletely control the spot equipments . Programmable Logic Controller (PLC) is based of relay logic control system。s control technique, especially the characteristics of the Profibus fieldbus， the thesis put forward the project that the gate supervise controlling system base on the Profibus control and Ether technique， according to that project， pleted PLC control procedure and the procedure of the supervise and control( supervise and control software and manmachine interface)。s operating machine39。s hydraulic hoist system. The thesis analyzed the development of the gate39。s intelligence. 4. The highly decentralization of system structure 5. The strong antijamming At present, the most popular fieldbus in the world is based on OST model, Including physical layer, data link layer, application layer and etc. The FF, Profitbus, HART, CAN and LonWork are the most effective ones on this fi
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