基于PLC变频调速电梯控制系统设计--毕业设计

山东科技大学本科毕业论文1毕业设计(论文)论文题目：基于PLC的变频调速电梯控制系统设计姓名：侯军龙指导教师：刘玉兰老师院校：山东科技大学泰山科技学院专业：自动化山东科技大学本科毕业论文2摘要电梯是高层建筑不可缺少的垂直方向的交通运输工具。随着电梯拖动技术、控制技术的快速发展，电梯已从直流电动机拖动到交流单速电动机驱动、交流双速电动机驱动，到交流调压调速(ACVV，AlternatingCurrentVoltage)控制，发展到交流调压调频技术(VVVF，VariableVoltageVariableFrequency)控制，其逻辑控制也由PLC代替原来的继电器控制，使得电梯运行的可靠性、安全性、舒适感、平层精度、运行速度、节能降耗、降低噪音等方面得到了极大的发展。新制造的电梯都采用了对电动机实现线性调速的调压调频(VVVF，VariableVoltageVariableFrequency)技术，由于VVVF电梯采用微机控制，有完善的自检测、自诊断、自保护功能，因而十分安全可靠。在研究电梯基本结构的基础上，阐述了电梯的拖动原理和控制原理，研究并提出了基于可编程控制器PLC和变频器的电梯控制系统的实现方案，利用安川VS-616G5型变频器可编制速度曲线的特点为电梯舒适度的提高，提供了技术支持。通过合理分析所得速度控制曲线既可以满足快速性的要求又避免了重力加速度效应，旋转编码器的使用，使PLC的内部的资源和功能得到了充分的利用。采用PLC对电梯信号系统进行控制，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；模块化；电梯；微机控制山东科技大学本科毕业论文3AbstractTheelevatorisanecessaryvehicleforhigh-building’sperpendiculartransportation．Alongwiththerapiddevelopingofdragandcontroltechnique，theelevatorhasbeendevelopedfromtheDCmotordrivetotheACsinglespeedandACdoublespeedmotordrive，tilltheACvariablevoltage(ACVV)controlandthentillthevariablevoltagevariablefrequency(VVVF)control．New-madeelevatorsallhaveemployedtheVVVFsothattheyworkquitesafelyandreliably,causewhichusemicro-computercontrollingsothattherearesomemeritsfollowing：perfectself-test，self-diagnostics，self-protect．Inthisthesisithasstudiedandproposedtheimplementationprojectofelevator’sVVVFcontrolsystembasedonPLCandtransducer．ThisthesishasbeensupportedtechnicallybythemeritofcompilingspeedcurveusingANCHUANVS-616G5．Analyzingreasonablythecurvewhichcannotonlymeetstheclaimingofrapiditybutalsoavoidstheeffectfromaccelerationofgravity．Andtheinteriorresourceandfunctioncanbefullyutilizedusingtherotaryencoder．Ithasbeendevelopedacompleteelevatorcontrolsoftwareinthisthesis,havingraisedtheelevator’scontrollinglevel,improvedthecozyfeeling，sotheeffectofcontrolcomesmoreideally．KeywordsPLCcontrol；FrequencyConversion；Modularization；Elevator；Micro-computercontrolling山东科技大学本科毕业论文1目录第1章绪论..............................................................................................................11.1课题的研究背景及意义................................................................................11.2电梯的国内外发展状况................................................................................31.3PLC在电梯控制中的应用以及发展前景...................................................51.4PLC控制系统与继电器控制系统的比较...................................................71.5PLC控制系统与计算机控制系统的比较...................................................91.6课题研究的内容............................................................................................9第2章电梯的概述...........................................................................................102.1电梯的基本结构............................................................................................102.2电梯的种类....................................................................................................122.3电梯的主要参数及性能指标........................................................................152.3.1主要参数..............................................................................................152.3.2性能指标..............................................................................................16第3章控制系统的组成....................................................................................183.1PLC控制系统组成........................................................................................183.1.1硬件的组成..........................................................................................183.1.2软件的组成..........................................................................................203.2PLC控制系统抗干扰措施.............................................................................223.2.1PLC控制系统的安装和使用环境...................................................233.2.2.PLC的电源与接地PLC.....................................................................233.2.3PLC的输入、输出设备......................................................................243.2.4软件抗干扰措施..................................................................................263.2.5利用“看门狗”方法对系统的运动状态进行监控...........................263.2.6消抖......................................................................................................273.2.7用软件数字滤波的方法提高输入信号的信噪比...............................273.3输入输出（I/O）点数的估算......................................................................273.4变频器的选择................................................................................................293.4.1通用变频器..........................................................................................293.4.2安川VS-616G5型变频器..................................................................30山东科技大学本科毕业论文1第4章四层楼电梯控制系统设计..................................................................324.1电梯控制系统模拟面板图.............................................................................324.2电动机控制电路图........................................................................................334.3PLC外部接线图............................................................................................344.4流程图..............