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1、英文原文2008WorkshoponPowerElectronicsandintelligentTransportationSystemDesignandPracticeofanElevatorControlSystemBasedonPLCXiaolingYang1,2,QunxiongZhu1,HongXu11CollegeofinformationScience&Technology,BeijingUniversityofChemicalTechnology,Beijing100029,China2AutomationCollegeofBeijingUnionUniversit
2、y,Beijing,100101,Chinayxl_lmy@sina.com,zhuqx@mail.buct.edu.cn,AbstractThispaperdescribesthedevelopmentof2nine-storeyelevatorscontrolsystemforaresidentialbuilding.ThecontrolsystemadoptsPLCascontroller,andusesaparallelconnectiondispatchingrulebasedon"minimumwaitingtime"torun2elevatorsinparallelm
3、ode.Thepapergivesthebasicstructure,controlprincipleandrealizationmethodofthePLCcontrolsystemindetail.italsopresentstheladderdiagramofthekeyaspectsofthesystem.Thesystemhassimpleperipheralcircuitandtheoperationresultshowedthatitenhancedthereliabilityandperformanceoftheelevators.1.1ntroductionWit
4、hthedevelopmentofarchitecturetechnology,thebuildingistallerandtallerandelevatorsbecomeimportantverticaltransportationvehiclesinhigh-risebuildings.Theyareresponsibletotransportpassengers,living,workingorvisitinginthebuilding,comfortableandefficientlytotheirdestinations.Sotheelevatorcontrolsyste
5、misessentialinthesmoothandsafeoperationofeachelevator.ittellstheelevatorinwhatordertostopatfloors,whentoopenorclosethedoorandifthereisasafety-criticalissue.Thetraditionalelectricalcontrolsystemofelevatorsisarelay-controlledsystem.ithasthedisadvantagessuchascomplicatedcircuits,highfaultratioand
6、poordependability;andgreatlyaffectstheelevator’srunningquality.Therefore,entrustedbyanenterprise,wehaveimprovedelectricalcontrolsystemofarelay-controlledelevatorinaresidentialbuildingbyusingPLC.Theresultshowedthatthereformedsystemisreliableinoperationandeasyformaintenance.Thispaperintroducesth
7、ebasicstructure,controlprincipleandrealizationmethodoftheelevatorPLCcontrolsystemindetail.2.SystemstructureThepurposeoftheelevatorcontrolsystemistomanagemovementofanelevatorinresponsetouser’srequests.itismainlycomposedof2parts:2.1.Elect
