1、毕业论文（设计） 1 【摘 要】 ： 随着现代城市的发展，高层建筑日益增多，电梯成为人们日常生活必不可少 的代步工具。电梯性能的好坏对人们生活的影响越来越显著，因此必须努力提高 电梯系统的性能，保证电梯的运行既高效节能又安全可靠。传统的电梯控制系统 采用的是继电器逻辑控制电路，这种控制易出故障，维护不便，运行寿命短，占 地空间大，正逐步被淘汰。 为了提高自动控制系统的可靠性和设备的工作效率，设计了一套以PLC为核 心控制器的电梯自动控制系统，用来取代以往的较复杂的继电器接触器控制。 系统的核心部分（控制部分）使用了日本三菱公司生产的FX2N-80型PLC，因为在 核心控制部分采用的是软件程序控
2、制，从而在保证电梯正常运行这个要求的情况 下，大大的提高了电梯故障检查与维修的方便性和容易性，同时还克服了手动操 作所带来的一些人为干扰因素，取得了良好的预期效果。 关键词：电梯、PLC、梯形图 毕业论文（设计） 2 【Abstract】 ： With the development of modern cities, an increasing number of high-rise building, elevator become an indispensable means of transport of daily life. The quality of the lift perf
3、ormance of the impact on peoples lives becoming more and more obvious, it must strive to improve the performance of elevator systems, and ensure the operation of the lift is safe, reliable and energy efficient. The traditional elevator control system uses logic of the relay to control circuit, this
4、kind of controls easily to be crash, maintains inconveniently, the movement life is short, and that occupying a large area of space, it being eliminated gradually. For raising the credibility of the automatic control system and the work efficiency of the equipments, design a set of take PLC as the c
5、ore controller of the elevator auto control system, using to replace former more complicated of after electric appliances-the contact machine control. The core part(control part) of the system used a Japanese Mitsubishi company to produce of the FX2N - 80 type PLC is the software procedure control i
6、n the core because of what to control the part adoption, thus Be promising the elevator circulates normally under the circumstance ofwith this request, raised elevator to break down check and the convenience and easy for maintain consumedly, still overcame to move an operation some artificial interference factors bring in the meantime, obtain the good results. KEYWORDSKEYWORDS: Elevator, PLC, Ladder Diagram 毕业论文（设计） I 目目 录录 前 言
