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毕业设计题目真空镀膜机电气控制系统学院自动化与电气工程学院专业电气工程及其自动化班级电传1002班学生黄瑶妹学号20100321072指导教师李聪二〇一四年五月三十一日济南大学毕业设计I摘要本文所研究的真空镀膜机是一种蒸发式卷绕系统的镀膜机，主要应用于PET、OPP、BOPP等塑料薄膜上蒸镀金属膜，也可应用于生产镀铝、镀锌铝或镀银锌铝电容膜。其总体结构主要由真空系统、卷绕系统、蒸镀系统及电控系统组成，通过PLC来实现对真空系统的各种泵、阀门等开关量的控制，通过三菱触摸屏实现后台管理、各种工艺参数的设定及控制功能，自动化程度较高，有利于生产效率的提高。该电气控制系统主控单元是采用三菱PLC的FX系列的通过三菱触摸屏设置对纸张力、电机速度、蒸发舟的状态和蒸发量等工艺要求参数的控制，同时具有故障报警、保护路线的功能，由RS232/485串行接口、A/D转换模块和控制器等实现各种参数的传输、信息处理、检测控制功能。文中首先对镀膜机的真空系统和整个蒸镀工艺过程进行了分析；并建立了卷绕系统中放卷、收卷的张力控制模型，找出影响张力的相关因素，并采用了模糊自适应整定PID控制算法作为卷绕系统张力控制策略，结果显示比传统的PID控制效果好，适应性强；同时完成了控制系统软、硬件结构的论证分析和设计，设计过程中采用三菱PLC仿真软件对电气控制系统进行了模拟仿真，并实现上位机与PLC的通讯功能，仿真结果显示，该真空镀膜机自动化程度高，模拟蒸镀效果好，保证了镀膜质量。关键词：真空镀膜机；可编程控制器；张力控制；人机界面；AutoCAD2007济南大学毕业设计IIABSTRACTInthispaper,Vacuumcoatingmachine,whichisdevelopedbythispaperisanevaporation-typewindingcoatingmachine,mainlyusedinPET,OPP,BOPPandotherplasticfilmevaporatedmetallicfilm,alsocanbeusedintheproductionofaluminum,galvanizedaluminumorsilverplatedzincaluminumcapacitorfilm.Thecompositionofitsoverallstructureismainlycomposedofavacuumsystem,windingsystem,evaporationsystemandelectriccontrolsystem;Ontheonehand,throughthePLCtocontrolpumpofthevacuumsystem,valveswitchandsoon,ontheotherhand,throughMitsubishitouchscreentoconductback-stagemanagementandcontrolandsetallkindsofProcessparameters,thiswillimprovethedegreeofautomationandIsconducivetotheimprovementofproductionefficiency.TheelectriccontrolsystemofmaincontrolunitiscontrolledbyMitsubishiFXseries,throughMitsubishitouchscreentosetandcontrolevaporationprocessonpapertension,motorspeed,evaporationboatrequiredparameters,besidesfaultalarm,protectionroutefunction.ByRS232/485serialinterfaceandA/Dconversionmodulecontrollertoachievevariousparameterstransmission,informationprocessing,detectionandcontrolfunction.Firstly,thevacuumsystemforcoatingmachineandtheevaporationprocessareanalyzedinthispaper;andthewindingsystemofrollandtherolltensioncontrolmodelisestablished,thenfindingouttherelevantfactorsthataffecttension,andadoptthefuzzyadaptivetuningPIDcontrolalgorithmasthewindingtensioncontrolsystem,theresultsshowedthatcomparedwiththetraditionalPIDcontroleffect,thefuzzyadaptivetuningPIDcontrolalgorithmisbetterandhavestrongadaptability;atthesametimecompletingtheproofanalysisanddesignofthecontrolsystemofsoft,hardwarestructure,thedesignprocessofelectricalcontrolsystemissimulatedbyusingPLCsimulationsoftwareandMitsubishi,realizethecommunicationbetweenhostcomputerandPLCfunction,thesimulationresultsshowthatthevacuumcoatingmachinehavehighdegreeofautomation,simulationevaporationeffectisgoodandensurethecoatingquality.Keywords:vacuumcoatingmachine;programmablecontroller;tensioncontrol;man-machineinterface;AutoCAD2007济南大学毕业设计III目录摘要................................................................................................................................IABSTRACT..................................................................................................................II目录..............................................................................................................................III1前言.......................................................................................................................-1-1.1课题研究背景..............................................................................................-1-1.2真空镀膜机的发展趋势..............................................................................-1-1.3研究目的......................................................................................................-2-1.4研究内容......................................................................................................-2-1.4.1电气控制系统....................................................................................-2-1.4.2工艺参数的控制................................................................................-3-2真空镀膜机的系统结构........................................................................................-5-2.1镀膜工艺流程..............................................................................................-5-2.1.1顺序控制............................................................................................-6-2.1.2抽真空装置........................................................................................-7-2.1.3工艺参数的输入与显示....................................................................-7-2.2真空镀膜机电气控制系统方案设计..........................................................-8-2.2.1控制系统整体方案设计....................................................................-8-2.2.2控制系统整体方案论证....................................................................-9-3真空镀膜机的控制系统硬件..............................................................................-11-3.1.可编程控制器PLC简介..........................................................................-11-3.1.1可编程控制器的定义......................................................................-11-3.1.2可编程控制器的工作原理..............................................................-12-3.1.3可编程控制器的主要特点..............................................................-12-3.2.硬件设计方案与论证...........