加热炉温度控制系统设计

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绪论.............................................................................................................................. 1 系统设计背景.......................................................................................................... 1 本文的研究内容...................................................................................................... 1 设计总体方案及控制算法描述.................................................................................. 2 系统总体方案.......................................................................................................... 2 硬件方案设计...................................................................................................... 2 软件方案设计...................................................................................................... 3 PID 控制算法........................................................................................................... 6 PID 算法............................................................................................................... 6 PID 在 PLC 中的回路指令................................................................................... 7 PID 参数整定....................................................................................................... 8 本章小结.................................................................................................................. 9 系统硬件设计............................................................................................................ 10 系统的硬件组成.................................................................................................... 10 系统结构组成.................................................................................................... 10 系统各个组成部分完成的任务........................................................................ 10 可编程控制器........................................................................................................ 10 PLC 的选型......................................................................................................... 10 西门子 S7-200 主要功能模块介绍.................................................................. 10 系统其他硬件选型及配置.................................................................................... 12 显示模块............................................................................................................ 12 温度传感器........................................................................................................ 13 调功器................................................................................................................ 14 系统硬件链接........................................................................................................ 16 本章小结................................................................................................................ 17 系统软件设计............................................................................................................ 18 方案设计思路........................................................................................................ 18
关键字: PLC,加热炉,温度控制系统,自动控制
中 北 大 学 2017 届 毕 业 设 计 说 明 书
Design of Heating Furnace Temperature Control Syst来自百度文库m
Abstract:Modern industry development is becoming more and more automated, and in the automatic control device of programmable controller is widely used, because it is based on the old relay, control technology, communication technology, computer technology into one, at the same time, compared with the traditional teacher relay control, its ability is stronger, the operation is more simple and convenient, safe and reliable, for the long-term continuous work of modern industry regularly, it will be more suitable for the temperature control. This paper mainly through the overall design of the heating furnace temperature control system, choose the best hardware design, the use of software, program flow chart, ideas, text and other aspects detailed introduces the principle of each module, design and application, with the use of control algorithm and program design. Taking PLC as the core, through the PLC programming the temperature control object, can be conveniently designed to meet the temperature requirements of the control system. The SIEMENS S7-200PLC, and programming language design, with automatic control theory, solve the problem of heating furnace temperature control.
毕业设计说明书
加热炉温度控制系统设计
学生姓名: 学 专 院: 业:
何琪
学号: 1302054347
机械与动力工程学院 过程装备与控制工程 刘广璞
指导教师:
2017 年 6 月
中 北 大 学 2017 届 毕 业 设 计 说 明 书
加热炉温度控制系统设计
摘要:现代社会的工业发展越来越趋向于自动化,而在自动控制装置中可编程控制 器被广泛的应用,因为它在老式的继电器的基础上将控制技术、通信技术、计算机 技术融于一体,同时,与传统的老师继电器相比,它的控制能力更强,操作也更为 简单方便,安全可靠性更高,这对于现代工业经常性的长期连续工作来说,采用它 来进行温度控制将更合适。 本文主要通过对整个加热炉温度控制系统的总体方案设计,对其 PLC,温度变 送器和调功器等元件进行了选型,设计了 I/O 端口分配表,设计了硬件连线图,系 统流程框图,选择西门子 S7-200PLC,完成了手动和自动的程序设计,以自动控制理 论为理论核心,解决加热炉温度控制问题。
Key words: PLC,Heating furnace,Temperature control system,Automatic control

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