基于56800e数字信号处理器和霍尔传感器的三相bldc电机控制

2200511尔传感器的三相BLDC电机控制作者:Leonard 的三相BLDC（无刷直流）电机驱动的设计。BLDC电机用的是电子换向器，所以它比直流电机更可靠。BLDC电动机通过转子磁铁产生转子磁通，所以能取得更高的效率。因此，BLDC电动机可（冰箱、洗衣机、洗碗机等），高档水

2体；如图1所示。©©飞 半导,2005-.轴1BLDC体管在与转子位置保持同步时进行切换的。因此，BLDC电机往往包含内部或外部位置传感器来感知转子的转子磁通的角度保持在接近90°，从而可以产生最大扭矩。这意味着电机的正常运作需要电子控制。2所示。利用技术，BLDC电机的相时，只有两个晶体管被导通。在第一个相，上面的断开；如图4所示。切切 40。对于互补开关，互补晶体管在惯性滑行期间被导通，所以电流向相反方向流动。图5描述了互补开关。45所示为双级开关模式。本应用使用的是互补单级模式。切切 5换向建立一个旋转场。如前所述，为了BLDC电机能正常运转，定子与转子间的角度必须保持在接近置通常由霍尔传感器来感知。霍尔传感器有36种状态。霍尔传感器的每个状态与定子的一个61PhaseAQ1DCBusPhaseC通过晶体管Q6与地相连；PhaseB没有通电。1中选出一种新的电压模式应用到BLDC电机。60°变到120°。781霍尔传感器霍尔传感器相100-110-010-011-001-101-2霍尔传感器相相100-101-001-011-010-110-PI控制器。实际速度和理想速 换向 9ut=Kcet-1---tTI .uk=upk+.2upk=Kc.3Tuk=uk–1+ T .4m(k第kup(k第kul(k第kul(k-1第k-1实现同传统的比例-积分（Proportional-Integral，PI）控制器。速度控制器的输出与DCBus实测电流一起 脉冲的占空比。速度控制器与转矩控制器的结合如图10

结合到一块上。这些设备还提供很多用于电机控制的设备，如脉冲宽度调制（）模块、模数转（ADC）、定时器、通信设备（SCISPI等FlashRAM。 如何们：1300N.AlmaSchoolRoadChandler,Arizona85224 Schatzbogen7 +498992103559+33169354848：0120191014or+8135437 半导体(中国） 23+86105879仅提供印刷品请求：

Informationinthis isprovidedsolelytoenablesystemandsoftwareimplementerstouse scaleSemiconductorproducts.Therearenoexpressorimpliedcopyrightlicensesgrantedhereundertodesignorfabricateanyintegratedcircuitsorintegratedcircuitsbasedontheinformationinthis.scaleSemiconductorreservestherighttomakechangeswithoutfurthernoticetoanyproductsherein. scaleSemiconductormakesnowarranty,representationorguaranteeregardingthesuitabilityofitsproductsforanyparticularpurpose,nordoesscaleSemiconductorassumeanyliabilityarisingoutoftheapplicationoruseofanyproductorcircuit,andspecificallydi sanyandallliability,includingwithoutlimitationconsequentialoraldamages.“Typical”parametersthatmaybeindifferentapplicationsandactualperformancemayvaryovertime.Alloperatingparameters,including“Typicals”,mustbevalidatedforeachcustomerapplicationbycustomer’stechnicalexperts. scaleSemiconductordoesnotconveyanylicenseunderitspatentrightsnortherightsofothers. scaleSemiconductorproductsarenotdesigned,intended,orauthorizedforuseascomponentsinsystemsintendedforsurgicalimntintothebody,orotherapplicationsintendedtosupportorsustainlife, scaleSemiconductorproductcouldcreateasituationwherealinjuryordeathmayoccur.ShouldBuyerpurchaseoruse scaleSemiconductorproductsforanysuchunintendedoritsofficers,employees,subsidiaries,affiliates,anddistributorsharmlessagainstallclaims,costs,damages,andexpenses,andreasonableattorneyfeesarisingoutof,directlyorindirectly,anyclaimofalinjuryordeathassociatedwithsuchunintendedorunauthorizeduse,evenifsuchclaimallegesthatscaleSemiconductorwasnegligentregardingthedesignormanufactureofthepart.pliantand/orPb-versionsofscaleproductshavethefunctionalityandelectricalcharacteristicsastheir pliantand/ornon-Pb-counterparts.Forfurtherinformation,seehttp:/ orcontactyourscalesalesrepresentative.Forinformationonscale’sEnvironmentalProductsprogram,goto scale™andthescalelogoaretrademarksofscaleSemiconductor,Inc.Allotherproduc