The Study Of The Long-Distance Control Of The Converter In Coking Plant

With the fast development of the modern industry, the scale of control expends continually in industrial production process, the degree of complexity increases continually, the process of technics intensifies continually, as a result the request of the process control and the production management is more and more high.The distributed control system (DCS) come forth in 1970's as a new control technology. After the development of thirty years, it becomes the core of the control system now.Due to the equipment is old, and the work efficiency is lowness, the control system of the converter can't satisfy the natural work requirement, in coking plant of steelworks. The main assignment of this problem task is described as fellows. Reconstructs the converter of the three workshops(total six suits),and uses the PLC to spot control, uses the computer to manage the total system including the six suits of the PLC, composes a integrate distributed control system by the communication net.According to the real problem task, referring to the abundance literature, this text introduces mainly the choice of the control system, the design of the control system, and the compose of the communication net respectively.The whole text is divided into six chapters.The first chapter introduces the development course and the development foreground of the DCS, and the significance of the problem task, and the structure of the system.The second chapter introduces the characters, the structure, the styles, the appliance, the respective advantage and disadvantage of the DCS and the FCS.The third chapter introduces the characters, the principle, the appliance and the development trend of the touch screen.The forth chapter introduces the technology demand of this system.The fifth chapter introduces the electric control system and the PLC control system and the principle, designs the programme of the PLC.The sixth chapter introduces the communication net, the communication of the PLC and the computer, the communication of the PLC and the touch and screen.