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1、湖北理工学院毕业设计（论文）外文文献翻译DesignandImplementationofPLC-BasedMonitoringControlSystemforInductionMotorZHUShao-ying，XUYu，HeZheng-wenXianJiaotongUniversity，Xian710049，P.R.ChinaAbstract：Theimplementationofamonitoringandcontrolsystemfortheinductionmotorbasedonprogrammablelogiccontroller(PLC)technologyisdesc
2、ribed.Also,theimplementationofthehardwareandsoftwareforspeedcontrolandprotectionwiththeresultsobtainedfromtestsoninductionmotorperformanceisprovided.ThePLCcorrelatestheoperationalparameterstothespeedrequestedbytheuserandmonitorsthesystemduringnormaloperationandundertripconditions.Testsoftheinduc
3、tionmotorsystemdrivenbyinverterandcontrolledbyPLCproveahigheraccuracyinspeedregulationascomparedtoaconventionalcontrolsystem.TheefficiencyofPLCcontrolisincreasedathighspeedsupto95%ofthesynchronousspeed.Thus,PLCprovesthemselvesasaveryversatileandeffectivetoolinindustrialcontrolofelectricdrives.Ke
4、ywords：Computer-controlledsystems,computerizedmonitoring,electricdrives,inductionmotors,motioncontrol,programmablelogiccontrollers(PLCs),variable-frequencydrives,voltagecontrol.I.INTRODUCTIONSincetechnologyformotioncontrolofelectricdrivesbecameavailable,theuseofprogrammablelogiccontrollers(PLCs)
5、withpowerelectronicsinelectricmachinesapplicationshasbeenintroducedinthemanufacturingautomation[1],[2].Thisuseoffersadvantagessuchaslowervoltagedropwhenturnedonandtheabilitytocontrolmotorsandotherequipmentwithavirtuallyunitypowerfactor[3].ManyfactoriesusePLCsinautomationprocessestodiminishproduc
6、tioncostandtoincreasequalityandreliability[4]–[9].Otherapplicationsincludemachinetoolswithimprovedprecisioncomputerizednumericalcontrol(CNC)duetotheuseofPLCs[10].Toobtainaccurateindustrialelectricdrivesystems,itisnecessarytousePLCsinterfacedwithpowerconverters,personalcomputers,andotherelectrice
7、quipment[11]–[13].Nevertheless,21湖北理工学院毕业设计（论文）外文文献翻译thismakestheequipmentmoresophisticated,complex,andexpensive[14],[15].FewpaperswerepublishedconcerningdcmachinescontrolledbyPLCs.Theyreportboththeimplementationofthefuzzyme
