大学毕设论文--基于plc的自动送料装车控制系统的设计(修改).docVIP

基于PLC的自动送料小车控制设计 学生： 指导教师： 摘要：可编程序控制器（Programmable controller）简称PLC，由于PLC的可靠性高、环境适应性强、灵活通用、使用方便、维护简单，所以PLC的应用领域在迅速扩大。对早期的PLC，凡是有继电器的地方，都可采用。而对当今的PLC几乎可以说凡是需要控制系统存在的地方就需要PLC。尤其是近几年来，PLC的成本下降，功能又不段增强，所以，目前PLC在国内外已被广泛应用于各个行业。 本设计是为了实现送料小车的手动和自动化的转化，改变以往小车的单纯手动送料，减少了劳动力，提高了生产效率，实现了自动化生产！而且本送料小车的设计是由于工作环境恶劣，不允许人进入工作环境的情况下孕育而成的。 本文从第一章到第二章送料小车的系统方案的确定为切入点，介绍了为什么选用PLC控制小车；第三章介绍了送料小车的应达到的控制要求；第四章到第七章根据控制要求进行了小车系统的具体设计，包括端子接线图、梯形图(分段设计说明和系统总梯形图)和程序指令设计；最后得出结论。 关键词：PLC，送料小车，控制，程序设计 THE DESIGN OF CONTROLLING IN THE AUTOMATIC FEEDING CAR BASED ON PLC Abstract:Programmable logic controller referred to PLC ，because of the high reliability PLC adaptability，flexibility，environment，use convenient，simple maintenance，so the application of PLC in the rapidly expanding. In early PLC ，always have relays place，can use. But in todays PLC to control system that almost say there is need of place of PLC. Especially in recent years， the cost of PLC ， function and not increase， so，at the moment，PLC at home and abroad，has been widely used in various industries. In order to achieve the design of the car feed the transformation of manual and automated，simple to change the past，car manual feed，a reduction of the workforce， increased productivity，automated production! Feeding and the car is designed to be as a result of bad working conditions are not allowed to enter the working environment of the circumstances formed. This article from the first chapter to second chapter of the feed system of the car identified as an entry point to introduce a car Why choose PLC control; Chapter III introduced the car feed the control requirements to be met; Chapter Ⅳ to chapter Ⅶ under the control of the car system to carry out the specific design，including the terminal wiring diagram，ladder diagram (Sub-total system design descriptions and ladder) and procedures for instruction design; the final conclusion. Keywords:PLC ，Feeding car，Control，Program design 目 录 前言 1 1 自