基于PLC的自动送料小车控制设计毕业论文.doc

基于PLC的自动送料小车控制设计 摘 要 可编程序控制器（Programmable controller）简称PLC，由于PLC的，PLC控制小车；第二章介绍了送料小车的应达到的控制要求；第三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 of the feed system of the car identified as an entry point to introduce a car Why choose PLC control; Chapter II introduced the car feed the control requirements to be met; Chapter III 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. KEY WORDS： PLC Feeding car，Control，Program design 目 录 前 言 1 第1章 控制系统介绍和控制过程要求 2 1.1 控制系统在送料小车中的作用与地位 2 1.2 控制系统介绍 2 第2章 送料小车系统方案的选择 4 2.1 可编程控制器 PLC的优点 4 2.2 小车送料系统方案的选择 5 第3章 基于PLC的送料小车接线图及梯形图 6 3.1 送料小车PLC的 I/O分配表 6 3.2 PLC端子接线图 7 3.3 梯形图分段设计 8 3.4 程序运行原理说明调试与完善 13 3.5 系统总梯形图设计 13 3.6 小车程序设计 18 结 论 23 谢 辞 24 参考文献 25  前 言 随着社会迅速的发展，各机械产品层出不穷。控制系统的发展已经很成熟，应用范围涉及各个领域，例如：机械、汽车制造、化工、交通、军事、民用等。PLCPLC的应用不但大大地提高了电气控制系统的可靠性和抗干扰能力，而且