输送带的PLC控制系统的设计
摘要：输送带也叫运输带，输送带由于它的成本低、易维修、使用方便、可缩短运输距离、运输平稳等优点得到了企业们的广泛采用。并且它的控制方式也非常多，可以由单片机、PLC、计算机等来实现控制效果，以前大多采用接触式继电器来实现控制，但是接触式继电器的控制接线复杂，并且容易有接触不良的故障，所以近年来PLC凭借着其抗干扰力强、功能完善等优势开始逐步取代传统的接触式继电器控制系统。PLC程序的编制简单，容易学会而且它的调试与运行的检查也非常的方便容易操作，并且其还自带有报警系统。传统的接触式继电器由于其复杂的外部接线，所以想要实现控制效果的转变非常的困难，而PLC只需重新编程就可实现控制效果的转变，因为它的接口上接有各种元器件，各元器件的控制关系是通过编写的程序来实现表达的，非常容易操作。本文介绍了由PLC控制系统控制的输送带所要达到的控制要求的设计，包括了PLC的I/O分配图、接线图、以及完整的控制程序。
关键词：输送带；PLC；控制系统
The design of the conveyor belt of the PLC control system
Abstract：Also called conveyor belt conveyor belt, conveyor belt because of its low cost, easy maintenance, easy to use, stable can shorten the transportation distance, transportation advantages, such as the companies are widely used. And its control method is also very much, to be implemented by the microcontroller, PLC and computer control effect, much contact relay is used to realize the control, but the contact of the relay control complex wiring, and easy to have poor contact failure, so in recent years the PLC with its strong anti-interference, functional advantages of began to gradually replace the traditional contact relay control system. PLC program compiled a simple image, convenient and easy to learn and it's debugging and running check is very convenient, and it also bring their own alarm system. Traditional contact relay due to its complex wiring, so want to realize the change of the control effect was very difficult, and only reprogrammed to PLC can realize the change of control effect, because it is with the various components on the interface, the components of the control relationship is by writing programs to achieve expression, very easy to operate. Controlled by the PLC control system of conveyor belt were introduced in this paper to achieve the control requirements of the design, including PLC I/O distribution diagram, wiring diagram, and complete control program.
Keywords：Conveyor belt；PLC；Control system
目录
第一章 绪论
1.1输送带PLC控制系统的背景及意义
1.2输送带PLC控制系统的国内外研究现状
1.2.1国内外输送带机技术上的差距
1.3输送带的PLC控制系统课题研究的内容
第二章 输送带PLC控制系统的硬件设计
2.1PLC概况及其应用
2.1.1PLC概念
2.1.2PLC发展史
2.1.3PLC的结构及各部分的作用
2.1.4PLC的特点
2.1.5PLC在输送带中的应用
2.2电动机正反转概述
2.3气动系统的设计
2.3.1电磁阀与气缸的结构
第三章 输送带PLC控制系统的电路设计
3.1主电路电动机接线设计
3.1.1三相异步电动机的概念
3.1.2三相异步电动机的工作原理
3.2系统I/O分配
3.2.1系统I/O点的设置原则
3.2.2系统I/O分配表
3.3PLC接线图
第四章 输送带PLC控制系统的软件设计
4.1系统梯形图程序设计
总结及致谢
参考文献
参考文献
[1]向晓汉，黎雪芬，张爱红，PLC控制技术与应用，清华大学出版社，2010.12
[2]向晓汉，陆彬，陆金荣，电气控制与PLC技术，人民邮电出版社，2012.9
[3]陈平，张双侠，尹利平，Auto CAD 2010基础与实例教程，机械工业出版社，2012.1
[4]吴丽，胡健，西门子PLC应用基础与实训，化学工业出版社，2010.6
[5]曾文萱，孙腊元，向晓汉，液压与气动控制，机械工业出版社，2012.2
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