外文翻译---混合式步进电机及其驱动

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1、附录AHybridSteppingMotorsandDrivesHybridsteppingmotorsderivetheirnamefromthefactthattheirconstructionisahybridbetweenpermanentmagnetandreluctancemotortopologies.Theirinherentpositionalaccuracymakesthemsuitableforawiderangeofmotioncontrolandindustrialpositioningapplica

2、tions.Thisarticleexplainstheconstructionandoperationofthehybridsteppingmotor.Powerconvertertopologiesarepresentedwhicharecommonlyusedinhybridsteppingmotordrives.Methodsarediscussedofenhancingperformancebeyondthatachievablebytraditionalmethods.Itisshownthatthefallinc

3、ostofpowerelectronicdevicesisenablingfurtherenhancementsofsteppingmotordrivetechnology,broadeningtherangeofapplicationsforthisclassofmotor.byJ.D.WaleandC.PollockHybridsteppingmotordriveapplicationsHybridsteppingmotorsderivetheirnamefromthefactthattheirconstructionis

4、ahybridbetweenpermanentmagnetandreluctancemotortopologies.HybridsteppingmotorsrangefromminiaturemotorshavingoutputsmeasuredinuNmanduWtomotorproducingupto60Nmoftorqueand2kWofshaftpower.Steppingmotorshavetraditionallybeenusedinapplicationsatspeedsupto2000/3000r/min,bu

5、trecentenhancementsindrivetechnologyandimprovementsinmotordesignareenablingtheoperatingspeedofsteppingmotorstobeincreased.Hybridsteppingmotorsareinherentlysuitedtoprovidingmotionindiscrete,smallsteps.Asaresult,theyareidealinapplicationswhereapieceofequipmentmustbemo

6、vedandpositionedaccurately,usuallyaccordingtoinstructionsfromadigitalcontroller.Steppingmotorsaresuitedtodrivinglow-speedhigh-frictionloadsandareidealforpoint-to-pointpositioningsystemsandapplicationsneedingshortrapidmoves.Theyhavetheadvantageofbeingabletooperatewit

7、houtfeedbackdevicesandthis,coupledwiththeabsenceofbrushes,makessteppingmotorsvirtuallymaintenancefree.Theygiveanon-cumulativeerroroveranydistanceandareinherentlydigitalinoperationastheiroperationisbasedonconvertingelectricalpulsesintomechanicalmovementinfixedincreme

8、nts.Steppingmotorsfindapplicationsinmanyindustrialareassuchaspackingmachines,conveyorsystems,robotarmmovement,liftandstackmachinetools.Des