【作者】 刘伟；

【导师】 陈蕴基；

【作者基本信息】 武汉理工大学 ， 控制理论与控制工程， 2004， 硕士

【摘要】 随着现代化工业的飞速发展，工业生产过程的控制规模不断扩大，复杂程度不断增加，工艺工程不断强化，因而对过程控制和生产管理系统提出了越来越高的要求。 分散型控制系统(DCS)作为一个全新的控制技术诞生于七十年代经过近三十多年来的迅速发展，目前已经成为过程控制系统的核心。 钢厂的炼焦车间的交换机控制系统由于设备陈旧，工作效率低下，不能满足正常的工作需要，本课题的主要任务是：对三个炼焦车间的共六台交换机进行了改造，用PLC进行现场的控制，用触摸屏对每个PLC进行实时的监控，然后用上位机来对这六台交换机进行整体的管理，通过通信网络连接组成一个完整的DCS系统。 以实际课题为依据，在查阅大量国内外文献的基础上，经过硬件的选择、系统的组成、程序的设计、人机界面的设计、到最后现场的调试及完成，本文对控制系统的选型，触摸屏的工业应用，控制系统的设计，通信网络的组成分别进行了详细的介绍。 全文共分为六章： 第一章介绍了DCS系统的发展过程，以及未来的发展前景，以及本课题的意义和系统的结构。 第二章介绍了DCS和FCS系统的特点、结构、类型及其各自的优缺点和国内外的应用状况。 第三章介绍了触摸屏的特点、工作原理、类型、应用状况和发展趋势。 第四章介绍了本系统的技术要求 第五章介绍了电气控制系统和PLC控制系统的设计及其工作原理，设计出了PLC的梯形图程序。 第六章介绍了系统的通信网络，PLC与上位机以及PLC与触摸屏的通信，人机界面的设计。更多还原

【Abstract】 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.更多还原