具有绝缘阻值在线检测功能的智能温度控制系统的设计.doc

V具有绝缘阻值在线检测功能的智能温度控制系统的设计Theintelligencetemperaturecontrolwiththeinsulationresistanceon-linemeasuringabilitysystem'sdesign摘要为了适应企业对产品的性能准确评估要求同时提升企业的生产力水平和产品竞争力本课题来源于宁夏科技厅科技攻关项目——围绕电机生产过程开发了一套具有电机绕组绝缘阻值在线检测功能的智能温度控制系统。本系统属于集散控制系统主要由三部分组成下位机是由多台智能温度仪表、智能数字兆欧表和485转232的转接头（485电平转成PC机能够接受的232电平）组成上位机是基于PC机的组态王软件部分。针对烘干炉惯性大、有滞后等特点采用模糊控制方法并设计了Smith-FuzzyPID控制器；针对电机绕组的大容性、热态绝缘阻值较小容易击穿的特点自主研发一种具有通信功能的低压智能兆欧表。由多台仪表(温控仪表和智能兆欧表)通过RS485总线与上位机PC机构成整个在线监控系统上位工控PC机中的组态王软件在线远程监控下位仪表自动测量烘干炉炉温和炉中电机绕组的绝缘阻值利用组态王中的windows界面实时显示下位机传来的数据并记录到了历史数据库中。组态王软件还可以根据相关信息绘制出烘干炉的炉温曲线及电机绕组的热态绝缘阻值变化曲线为控制产品质量和日后的故障判别提供依据。本控制系统应用于宁夏石嘴山市某电机厂数据测量效果良好提高了厂家的自动化水平。关键词：绝缘阻值兆欧表组态王在线检测高压输出AbstractInordertoadapttheenterprisetotheproductmanufacturingdaybydaystrictmanagementrequestsimultaneouslypromotesenterprise'sproductiveforceslevelandtheproductscompetitivepowerthisissuehasdevelopedasetofelectricmotorwindinginsulationresistanceonlineexaminationsystemsurroundingthemotorproductionprocess.ThesystembelongtothedistributedcontrolmodemainlycomposedofthreepartsthelowerpositionmachineiscomposedofmanyintelligentdigitmegameterthesuperiormachineisKingviewsoftwarewhichbasedonthePCmachineand485revolutionof232extensionattachments.ForthedryingfurnacehasthelagandlargeinertiacharacteristicsadoptfuzzycontrolmethodanddesignoftheSmith-FuzzyPIDcontroller;forlargecapacitiveofthemotorwindingssmallthermalinsulationresistanceeasytopenetratecharacteristicsindependentlyresearchanddevelopalow-voltagesmartmeggerwithcommunicationfunction.morethanonemeter(temperature-controlledinstrumentationandintelligentmegger)throughRS485busandhostcomputercomposethewholeon-linemonitoringsystemIndustrialPCConfigurationsoftwareon-lineremotelymonitorandcontrolthemetertoautomaticmeasureMotorwindinginsulationresistanceandunder-dryingfurnacetemperatureKingViewsof