具有绝缘阻值在线检测功能的智能温度控制系统的设计

AbstractIn order to adapt the enterprise to the product manufacturing day by day strictmanagement request,simultaneously promotes enterprise's productive forces level andthe products competitive power,this issue has developed a set of electric motor windinginsulation resistance online examination system surrounding the motor productionprocess.The system belong to the distributed control mode,mainly composed of threeparts,the lower position machine is composed of many intelligent digit megameter,thesuperior machine is Kingview software which based on the PC machine and 485revolution of 232 extension attachments.For the drying furnace has the lag and large inertia characteristics,adopt fuzzycontrol method,and design of the Smith-Fuzzy PID controller;for large capacitive of themotor windings,small thermal insulation resistance,easy to penetrate characteristics,independently research and develop a low-voltage smart megger with communicationfunction.more than one meter (temperature-controlled instrumentation and intelligentmegger)through RS485 bus and host computer compose the whole on-line monitoringsystem,Industrial PC Configuration software on-line remotely monitor and control themeter to automatic measure Motor winding insulation resistance and under-dryingfurnace temperature,KingView software use windows interface to display collected dataand record collected data in the historical database.KingView software can also drawdrying temperature curve and insulation resistance vary curve,for controlling productquality and providing the basis for future fault discrimination.This control system used ina Shizuishan City motor Factory,measurement data result is good,improve the level offactory automation.Key words:Insulation Resistance,Megameter,Kingview,Online Examination,HighVoltage Power Supply