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1、英文原文2008WorkshoponPowerElectronicsandintelligentTransportationSystemDesignandPracticeofanElevatorControlSystemBasedonPLCXiaolingYang1,2,QunxiongZhu1,HongXu11CollegeofinformationScience&Technology,BeijingUniversityofChemicalTechnology,Beijing100029,China2AutomationCollegeo
2、fBeijingUnionUniversity,Beijing,100101,Chinayxl_lmy@sina.com,zhuqx@mail.buct.edu.cn,AbstractThispaperdescribesthedevelopmentof2nine-storeyelevatorscontrolsystemforaresidentialbuilding.ThecontrolsystemadoptsPLCascontroller,andusesaparallelconnectiondispatchingrulebasedon"m
3、inimumwaitingtime"torun2elevatorsinparallelmode.Thepapergivesthebasicstructure,controlprincipleandrealizationmethodofthePLCcontrolsystemindetail.italsopresentstheladderdiagramofthekeyaspectsofthesystem.Thesystemhassimpleperipheralcircuitandtheoperationresultshowedthatiten
4、hancedthereliabilityandperformanceoftheelevators.1.1ntroductionWiththedevelopmentofarchitecturetechnology,thebuildingistallerandtallerandelevatorsbecomeimportantverticaltransportationvehiclesinhigh-risebuildings.Theyareresponsibletotransportpassengers,living,workingorvisi
5、tinginthebuilding,comfortableandefficientlytotheirdestinations.Sotheelevatorcontrolsystemisessentialinthesmoothandsafeoperationofeachelevator.ittellstheelevatorinwhatordertostopatfloors,whentoopenorclosethedoorandifthereisasafety-criticalissue.Thetraditionalelectricalcont
6、rolsystemofelevatorsisarelay-controlledsystem.ithasthedisadvantagessuchascomplicatedcircuits,highfaultratioandpoordependability;andgreatlyaffectstheelevator’srunningquality.Therefore,entrustedbyanenterprise,wehaveimprovedelectricalcontrolsystemofarelay-controlledelevatori
7、naresidentialbuildingbyusingPLC.Theresultshowedthatthereformedsystemisreliableinoperationandeasyformaintenance.Thispaperintroducesthebasicstructure,controlprincipleandrealizationmethodoftheelevatorPLCcontrolsystemindetail.2.SystemstructureThepurposeoftheelevatorcontrolsys
8、temistomanagemovementofanelevatorinresponsetouser’srequests.itismainlycomposedof2parts:2.1.Elect
