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2009届毕业设计说明书

基于DCS的温度控制系统的设计与应用

院 、 部： 电气与信息工程学院 学生姓名： 指导教师： 职称 专 业： 自动化 班 级： 完成时间： 2013年5月

摘 要

温度是工业生产中常见的工艺参数之一，任何物理变化和化学反应过程都与温度密切相关。在科学研究和生产实践的诸多领域中，温度控制占有着极为重要的地位，特别是在冶金、化工、建材、食品、机械、石油等工业中，具有举足轻重的作用。对于不同生产情况和工艺要求下的温度控制，所采用的加热方式，燃料，控制方案也有所不同。DCS具有通用性强、系统组态灵活、控制功能完善、数据处理方便、显示操作集中、人机界面友好、安装简单规范、调试方便、运行安全可靠的特点。它能够适应工业生产过程的各种需要，进一步提高生产自动化水平和管理水平，提高劳动生产率，保证生产安全。本文介绍了DCS的组态、下装及控制原理，完成了DCS温度定值控制系统的设计，通过操作员站、DCS分布式过程控制系统、THJ-3型高级过程控制对象系统实验装置，对温度进行定值控制，并对结果进行了讨论和总结。这次设计可以使我了解DCS的控制原理和使用方法，为以后的学习和工作奠定基础。

关键词：DCS；温度定值控制；组态

ABSTRACT

Temperature is the common industrial production process parameter, any physical

change and chemical reaction process closely is related with the temperature. In scientific research and production practice in many fields of temperature control in the occupied an extremely important position especially in the metallurgical, chemical, building materials, food, machinery, petroleum industry, which play a decisive role role. For different production conditions and technological requirements of temperature control, the way of heating, fuel, control scheme is also different.DCS have strong generality, flexible system configuration, control function concentrated operation of the perfect, convenient data processing, display, man-machine interface friendly, simple installation, convenient debugging and running characteristics of safe and reliable. It is able to meet the needs of industrial production process of all kinds, to further improve the level of production automation and management level, improve labor productivity, ensure safe production. This paper introduces the current situation of the development of the DCS control system, all kinds of Temperature characteristics, DCS configuration, remove theatrical makeup and costume and control principle, completed the DCS realize Temperature setting value control system experiment development, through the operators stand, DCS distributed process control system, THJ-3 type of advanced process control object system experiment device for the Temperature in fixed value control, the experimental results are discussed and summarized in this paper. This experiment can make I understand the DCS control principle and method of use, for the future study and work lay the foundation.

Keywords: DCS；Temperature setting value control；The configuration