基于PCS7的工业加热炉控制系统设计毕业设计.doc

2010届毕业生 毕业论文 题 目: 基于PCS7的工业加热炉控制系统设计 院系名称：电气工程学院 专业班级： 学生姓名： 学 号： 指导教师： 教师职称： 20 年 1 月 7 日 摘 要 加热炉装置是许多工业生产过程的关键设备，很大程度上决定了工业生产流程的效率、产品的质量以及设备的生产能力等。根据控制要求，设计了一套基于西门子PCS7的工业加热炉自动控制系统。 工业加热炉有一些非常重要的过程参数，如：物料流量、燃料和空气流量、物料出口温度、炉膛内压力和温度等。对于这些参数的控制至关重要，其不但决定着产品的质量和生产的效率，也很大程度上决定了生产过程的安全性。 由于非线性和温度滞后等很多因素，使得常规方法对加热炉的控制效果不是很理想。本以加热炉的工业生产过程作为被控对象，结合模糊PID控制、常规PID控制和变比值控制等多种控制方式。本被控对象的工艺过程和控制要求；被控变量、操作变量以及阀门特性的选取；控制系统的方案设计各控制子系统的控制方式和详细的控制算法框图控制系统的硬件设计。控制系统 硬件设计 PCS7 Title Based on PCS7 Control System Design of Industrial Furnace Abstract Furnace device is the key equipment in many industrial processes.It largely determine the efficiency of industrial production processes, product quality and production capacity of such equipment. In accordance with the control requirements and the idea energy saving, emission reduction, safety, the program designed a process control system based on Siemens PCS7 control system for industrial furnace. Industrial furnace has some very important process parameters, such as: material flow, fuel and air flow, the material exit temperature, pressure and temperature inside the furnace. Control of these parameters is essential,they not only determine the product quality and production efficiency, but also largely determine the safety of the production process. As the non-linear and temperature lag and many other factors, makes the conventional method of furnace control are not always effective. Therefore, the system make the industrial process of furnace as a controlled object, then combine fuzzy PID control, PID control and conventional variable ratio control and other control methods. This article divide into several parts to introduced the process and control requirements of the controlled object; the selection of controlled variables, operating variables and c