PLC四层电梯控制..docVIP

本科生毕业设计（论文） 题 目： 学生姓名： 系 别： 机电工程系 专业年级： 2010级机械设计制造及其自动化 指导教师： 2014年 6 月 日 Abstract The design for the status quo of Chinas elevator industry will be a programmable logic controller (PLC) used for four-storey elevator control logic, through the rational selection and design, not only to improve the reliability of the elevator, maintainability, and flexibility, while extending the of life and shorten the development cycle of the elevator and the elevator control to raise the level of the elevator operation to improve the comfort, so that the lift to reach a more satisfactory control effect. In this paper, the design of the elevator by the elevator when compared with the traditional, in the run with good comfort, in life can save energy, and achieved good economic and social benefits to achieve the desired purpose. The elevator control system has a mean layer, the Office of calls to the layer selected, manual and automatic functions with a set of features to control the election. In introducing the basic structure of the lift on the basis of the depth analysis of the working principle of the elevator, on the merits and characteristics of PLC, the focus of an analysis of the lift hardware design and software design, research and PLC based control system designed to lift the achievement of the program, Finally, the study of this thesis are summarized and prospects. Keywords：Elevator ；PLC control；VVVF ；inverter 第一章 可编程控制器 8 1.1 可编程控制器的介绍 8 1.1.1 定义 8 1.1.2 PLC和CPU的构成 8 1.1.3 电源模块 8 1.2 可编程控制器的选用 9 1.2.1 PLC控制系统的I/O点数计算 9 1.2.2 PLC的型号选择 10 第二章 硬件接线 11 2.1 外部接线图 11 2.2 I/O分配图 11 第三章 交流电梯的基本结构 13 3.1 机房部分 13 3.2 井道部分 13 3.3 轿厢部分 13 3.4 厅门部分 14 3.5 电梯的平层与停层 15 第四章 电梯的主电路及控制电路 17 4.1 拽引电动机主电路 17 4.2 控制部分 17 4.3 输入输出地址分配表如下 18 4.4 电梯工作过程 19 4.5 硬件设计原理 20 4.6 总体设计 21 4.6.1 设计目的 21 4.6.2 设计方案与技术指标 21 第五章 系统软件设计 23 5.1 PLC梯形图概述 23 5.2 系统工作过程分析 23 5.3 控制要求 24 5.4 过程分析 24 5.5 调试过程 26 5.5.1 准备工作 26