四层电梯PLC控制系统设计 毕业论文.doc

论文题目： 四层电梯PLC控制系统设计 摘 要 本文介绍一种电梯PLC控制系统。电梯是垂直方向的运输设备，是高层建筑中不可缺少的交通运输设备。它靠电力，拖动一个可以载人或物的轿厢，在建筑的井道内导轨上做垂直升降运动 Abstract This text introduces the control system of a kind of elevator PLC. The elevator is perpendicular directional of the conveyance equipments be indispensable in the high building of transportation equipments. It depends electric power, dragging along to move a car that can carry person or thing and lead a track in the building of the well way up do perpendicularity to ascend and descend sport, there is prominent function in the peoples life. And the control elevator circulate of the PLC system also has more and more high request, request to attain the movement purpose of steady, quasi-, quick of elevator movement. That system mainly from PLC, logic control the electric circuit constitute. Include an exchanges difference to tread electric motor among them, after the electric appliances, get in touch with a machine, route of travel switch and press button, give out light the indicator constitute and transducer for the control system of integral whole. The this machine control unit adoption carries on whole process a control to the machine by the programmable controller PLC of omron company. The whole system passes PLC, logic control the electric circuit is to the rise and fall of elevator; Add, decelerate; Even layer; Start, make to move a control. Its structure is simple and circulate an efficiency, even layer accuracy, be easy to comprehension and control. Key Words:The PLC controls system ，elevator ，The logic controls electric circuit，trans第一章 可编程控制器 1 第一节 可编程控制器的特点 1 第二节 可编程控制器的组成与工作原理 1 一．可编程控制器的组成 1 二．可编程控制器的工作原理 1 第二章 总体设计 3 第一节 设计方案与技术指标 3 一.设计方案 3 二.主要技术指标 3 三.系统设计 3 第三章 硬件设计 5 第一节 装置结构与工艺要求 5 第二节 硬件框图及输入输出分配 5 一．分配PLC的输入/输出端子 表3-1 5 二．统计输入、输出点数并选择PLC型号 6 三．输入/输出端子接线 7 第三节 硬件设计原理 13 一.继电器的工作原理 13 二.电动机的正反转原理 13 第四章 电梯的模拟调试 14 第一节 电梯调试前的准备 14 第二节 电梯的模拟调试过程 14 结束语 17 致 谢 18 参考文献 19 第一章 可编程控制器 第一节 可编程控制器的特点 （1）.抗干扰能力强，可靠性高。 （2）.控制系统结