毕业设计彭超-s.doc

毕业设计彭超-s
　湖南铁道职业技术学院毕业设计说明书
II
2013届毕业设计任务书
一、课题名称：电梯变频调速系统的设计
二、指导教师：邵瑞
三、设计内容与具体要求
1、课题概述
变频技术
　湖南铁道职业技术学院毕业设计说明书
VI
Abstract
Vertical lift as transportation, elevators in the production played a significant role in life. and reliability have become increasingly demanding, relay control weaknesses to become increasingly evident. The programmable logic controller (PLC) is based on the sequence logic control computer needs developed, at present, the relay control the elevator has been gradually replaced by PLC control.
On the other hand, technological advances make the elevator dragging, has been a gradual transition from DC converter to the AC frequency converter. As the elevator Frequency SPWM using advanced technology, improved quality and performance of the elevator.
Based on PLC control and frequency conversion technology, this paper carried out a 7 story elevator hardware design. First of all, VS-616G5 inverter parameters set in 9 groups and calculated parameters of the power inverter. In OMRON's PLC control system design, to set the S curve acceleration structure function, and the use of rotary encoder control car position and leveling appliance to ensure the lifts, and then assign the I / O points.
Software design, open the door for this layer, set the automatic door conditions. And the door motor protection program designed to stop the door, and gives the closed condition and to stop closing conditions. Furthermore, the programming instructions, including signal processing
and outside the call signal processing, the registration of a variety of signals, eliminating and display. Within or without the driver selected outbound direction, and a variety of reverse-cut staircase signal selection. On the floor for fast computing and high-speed pulse counting set, designed in the PLC software compiled seven segment LED display floor location. Finally, in order to protect the safety, design of the call to overload