毕业设计基于PLC的电梯控制系统设计论文.doc

毕业设计基于PLC的电梯控制系统设计 PAGE 第 PAGE \* Arabic \* MERGEFORMAT 21 页 摘要 本文针对PLC在六层电梯控制系统中的应用，设计了以PLC为主控制器，采用变频调速系统和集选控制方式来实现六层电梯的基本功能。 本设计采用三菱PLC—FX2N-80MR机控制，用软件来实现对电梯运行的自动控制。电梯具有完整的开关门控制系统、内外呼梯系统、故障报警及显示、消防运行功能和安全回路系统，可靠性大大提高。控制系统结构简单，外部线路简化，另外还可方便地改变控制功能。提高了电梯运行的安全性，并便于检修。与此同时，还选用了安川公司的通用变频器VS—616G5对电梯曳引主机进行变频调速。由于这种变频器采用了先进的SPWM技术并具有自学习功能，同时通过合理的参数设置、软件设计和编程，同样可以达到专用变频器的控制效果，因此，它以优异的调速性能、起制动性能、高效率和较好的节能效果及广泛的适用范围，从而明显改善了电梯运行的质量和性能，使电梯调速范围广、控制精度高、动态性能好，舒适、安静、节能，几乎可与直流调速电梯媲美。 关键词： PLC控制 电梯 变频调速 安全性 舒适感 ABSTRACT This paper PLC in the six-storey elevator control system, the application was designed to PLC-based controller, Using variable frequency system and set the election method to achieve control of a six-storey elevators basic functions The design of the Mitsubishi PLC-FX2N-80MR machine control software to achieve the operation of the elevator control. Lift with a complete switch gate control system, and outside the respiratory system staircase, fault alarm and, Fire safety and the operation of loop system. Greatly enhance reliability, control system is simple, streamlined external lines and, in addition, could easily change control functions. Improve the operation of the elevator safety, and ease of maintenance. Meanwhile, the company chose a generic Yasukawa converter VS-616G5 to lift Dray mainframe VVVF. This converter using advanced technology and SPWM self-learning function. through reasonable parameter setting, software design and programming, we can also achieve the same exclusive inverter control effect, therefore, It excellent speed performance, with braking performance, high efficiency and better energy-saving effects and the extensive scope of application, thereby significantly improving the quality of lift operations and performance, speed lift a wide range of high accuracy, good dynamic performance,comfort,quiet,efficient,energy-saving,and almost comparable to lift DC converter. Keywords：PLC control VVVF Elevator Safety comfort