21世纪英文报4.ppt

论文题目:
PLC控制交流变频调速电梯系统的研究
作者姓名:
专业名称:测试计量技术及仪器研究方向:
指导教师:
STUDY OF AC FREQUENCY SPEED SYSTEM OF ELEVATOR CONTROLLED BY PLC
A Dissertation submitted in fulfillment of the requirement of the degree of MASTER OF ENGINEERING From Shandong University of Science and Technology By XXX Supervisor:Professor Xu ke-bao College of Mechanical and Electronic Engineering
May,2003
AFFIRMATION
I declare that this dissertation ,submitted in fulfillment of the requirements for the award of Master's Degree,in Shandong University of Science and Technology,is wholly my own work unless referenced of acknowledge .The document has not been submitted for qualification at any other academic institute.
Signature:
摘要
随着我国经济的高速发展,微电子技术、计算机技术和自动控制技术也
得到了迅速发展,交流变频调速技术已经进入一个崭新的时代,其应用越来
越广。而电梯作为现代高层建筑的垂直交通工具,与人们的生活紧密相关,
随着人们对其要求的提高,电梯得到了快速发展,其拖动技术已经发展到了
调频调压调速,其逻辑控制也由PLC代替原来的继电器控制。本文在已有的
通用变频器的基础上,采用PLC对电梯进行控制,通过合理的选择和设计,
提高了电梯的控制水平,并改善了电梯运行的舒适感,使电梯达到了较为理
想的控制效果。
关键词:PLC控制变频调速电梯舒适感
ABSTRACT
With the development of the economy, microelectronic technology, computer technology and the automatic theory are developed rapidly, the AC variable frequency technology has been in a new state. It's application is ing more and more widely. But the elevator as an important traffic in skyscraper,it also has developed quickly with the improving requirement of the people .It's dragging technology has developed from DC timing to AC variable frequency timing and it's logic control- relay control also has been replaced by PLC.
The article is based on the now-being general frequency converter, using PLC to control the elevator, the reliability is improved and the feeling fort is better through the reasonable selection and design, so the effect of control is more ideal.
Key word: PLC control frequency conversion timing elevator feeling fort
目录
1绪论

1. 2 PLC及在电梯控制中的应用特点

2电梯设备与电梯发展动态
2. 1电梯设备

3基本方案选择
3. 1变频器的选择
(PLC)的选择