电梯的plc自动化控制毕业论文

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1、_ I 摘要摘要 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。 关键词关键词: 可编程控制器 电梯控制 变频调速 _ II ABSTRACT Wit

2、h 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. Its application is becoming more and more widely. But the elevator as an important traffic in skyscraper，it

3、also has developed quickly with the improving requirement of the people .Itsdragging technology has developed from DC timing to AC variable frequency timing and its logic control- relay control also has been replaced by PLC.The article is based on the now-being general frequency converter, using PLC

4、 to control the elevator, the reliability is improved and the feeling of comfort is better through the reasonable selection and design, so the effect of control is more ideal. Key wordKey word: PLC, Elevator Control，frequency conversion timing elevatorfeeling. _ III 目录目录 1 1 绪论绪论1 1 1.11.1 课题的必要性与发展概况课题的必要性与发展概况 1 1 1 1.2.2 基本基本方案选择方案选择 2 2 1 1.3.3 系统硬件设计系统硬件设计