摘要随着我国国民经济的快速发展，现代化程度日益提高。有更多的高层建筑和更多的电梯。中国电梯产品现状人民的物质文化生活也得到了改善。我国传统的电梯控制是由继电器和接触器组成的。它不仅具有可靠性差的缺点。Y，成本高，故障率高，但随着建筑层数的增加，也给制造和安装带来了很大的不便。若采用PLC控制解决上述问题短处，缺点。首先，分别介绍了电梯继电器控制和PLC控制的特点，突出了继电器电梯控制系统所暴露出的不足和PLC的优点。电梯控制系统其次，在查阅国内外大量相关文献的基础上，对电梯技术和电梯设备的发展进行了综述。然后进去介绍了PLC的选择原理和PLC控制系统的设计思想；在此基础上，根据电梯系统自身的工作状态要求，开发了电梯系统PLC软件。简述了软件开发的特点，结合PLC自身的控制规律，设计了能够实现一定功能的PLC电梯控制系统。本设计以PLC为工具对电梯的各种操作进行控制。首先，对三层电梯的硬件部分进行了分析，看看是什么样的开关，信号等等。然后，绘制自己的控制面板图，根据I/O点确定PLC的模型，最后进行原设计，绘制程序流程图，编写梯形图，然后在计算机上进行仿真。关键词：PLC电梯控制系AbstractWiththerapiddevelopmentofournationaleconomy,thedegreeofmodernizationisincreasingdaybyday.Therearemorehigh-risebuildingsandmoreelevators.ThecurrentsituationofelevatorproductsinChinahasalsoimprovedthematerialandculturallifeofthepeople.Thetraditionalelevatorcontrolinourcountryiscomposedofrelayandcontactor.Itnotonlyhasthedisadvantageofpoorreliability,Y,highcost,highfailurerate,butalsobringsgreatinconveniencetomanufactureandinstallationwiththeincreaseofbuildingfloors.IfPLCcontrolisusedtosolvetheaboveproblems,shortcomings(pluralnounofshortcoming).Firstly,thecharacteristicsofelevatorrelaycontrolandPLCcontrolareintroducedrespectively,highlightingtheshortcomingsofrelayelevatorcontrolsystemandtheadvantagesofPLC.Secondly,thedevelopmentofelevatortechnologyandequipmentissummarizedonthebasisofconsultingalargenumberofrelevantliteraturesathomeandabroad.ThentheselectionprincipleofPLCandthedesignideaofPLCcontrolsystemareintroduced.Onthisbasis,theelevatorsystemPLCsoftwareisdevelopedaccordingtotheworkingstateofelevatorsystemitself.Thispaperbrieflydescribesthecharacteristicsofsoftwaredevelopment,anddesignsaPLwhichcanrealizecertainfunctionsaccordingtothecontrollawofPLCitself.Celevatorcontrolsystem.ThisdesigntakesPLCasatooltocontrolallkindsofoperationofelevator.First,thehardwarepartofthethree-storeyelevatorisanalyzedtoseewhatkindofswitch,signalandsoon.Then,thecontrolpaneldiagramisdrawn,themodelofPLCisdeterminedaccordingtotheIOpoint.Finally,theoriginaldesigniscarriedout,theprogramflowchartisdrawn,theladderdiagram.Rdiagramiscompiled,andthenthesimulationiscarriedoutonthecomputer.KEYWORDS:PLCelevatorcontrolsystem目录摘要................................................................IAbstract...........................................................II目录................................................................11绪论..............................................................12电梯的概述........................................................22.1电梯结构.....................................................22.2电梯控制要求.................................................33硬件的选择........................................................43.1PLC定义和特点.............................................43.2PLC发展趋势...............................................53.3PLC基本结构...............................................63.4PLC的工作原理........
