PLC运料小车控制系统设计.doc.docVIP

学 号_ 0910111086__ 毕 业 论 文 课 题 PLC运料小车控制系统设计 学生姓名 王 坤 系 别 机械工程学院 专业班级 09机械设计制造及其自动化2班 指导教师 方新燕 二零一三年六月 PLC运料小车控制系统设计 摘 要 近年来，随着科技的进步和微电子行业的迅速发展，可编程序控制技术在自动化控制领域中得到广泛的运用，可编程序控制器（PLC）因其可靠性和操作简便等特点，已经成为工业控制领域的主体。 运料小车在现代化工业生产中普遍存在。传统的运料小车大多是继电器控制，而继电器控制有着接线复杂、易出故障、维护维修不易等缺点。PLC作为目前国际控制市场上的主流控制器，在市场、技术等方面有重大优势，利用PLC控制来代替继电器控制已是大势所趋。将PLC应用到运料小车电气控制系统，可实现运料小车的自动化控制，降低系统的运行费用。PLC功能强大，可扩展到多达128I/O点，且能增加特殊功能模块或扩展板，通信和数据连接功能选项使得FX1N在体积、通信和特殊功能模块等重要的应用方面非常完美。本课题主要内容包括：分析被控对象和明确系统控制要求；PLC选型；确定系统的I/O设备的数量及种类；控制流程设计；控制程序设计。 关键词：PLC；运料小车；控制系统 Design of PLC transport dolly control system Astract In recent years, with the scientific and technological progress and rapid development of microelectronic technology, programmable control technology has been widely used in automation and control, programmable logic controller (PLC) for its high reliability and simple operation, has been formation of an industry trend. The car used for transport materials is common in modern factories. Traditional transport materials are mostly car relay control, relay control wiring has numerous shortcomings of the high failure rate, and the repair is not easy to maintain the shortcoming. PLC applied to transport materials to car electrical control system and can realize automatic control operation of the car and reduce system operating costs. It is powerful, can be expanded to as many as 128 I/O points, and can increase the special function modules or expansion boards. Communications and data connectivity options make FX1N in volume, communications and special function modules such important applications perfectly. The topics include: analysis of plant and a clear system control requirements; PLC selection; determine the systems I / O device number and type; control process design; control programming. Key words ：PLC ; Materi