​厦门莫格电气自动化有限公司销售HARRIS021-900046您迈开询价的一小步，我还您成功的一大步。HARRIS021-900046HARRIS021-900046HARRIS021-900046无刷直流电机驱动控制采用三相六状态控制策略，功率管具有六种触发状态，每次只有两个管子导通，每60�电角度换向一次，若某一时刻AB相导通时，C相截至，无电流输出。单片机根据检测到的电机转子位置，利用MOSFET的开关特性，实现电机的通电控制，例如，当Q1、Q5打开时，AB相导通，此时电流流向为电源正极→Q1→绕组A→绕组B→Q5→电源负极。类似的，当MOSFET打开顺序分别为Q1Q5，Q1Q6，Q2Q6，Q2Q4，Q3Q4，Q3Q5时，只要在合适的时机进行准确换向，就可实现无刷直流电机的连续运转。2反电势过零检测无刷直流电机能够正常连续运转，就要对转子位置进行检测，从而实现准确换向。电机转子位置检测方式主要有光电编码盘、霍尔传感器、无感测量三种方式。由于四轴飞行器无刷直流电机要求系统结构简单、重量轻，因而采用无位置传感器的方式，利用第三相产生的感生电动势过零点时刻延迟30�换向。虽然该方法在电机启动时比较麻烦，可控性差，但由于电路简单、成本低，因而适合于在正常飞行过程中不需要频繁启动的四轴飞行器电机。由于无刷直流电机的两相导通模式，因而可以利用不导通的第三相检测反电势的大小。如图2反电势检测电路，中性点N与单片机的AIN0相接，Ain，Bin，Cin分别接单片机的ADC0，ADC1，ADC2.不停地比较中性点N电压与A，B，C三相三个端点电压的大小，以检测出每相感生电动势的过零点。ATMEGA16单片机模拟比较器的正向输入端为AIN0，负向输入端根据ADMUX寄存器的配置而选择ADC0，ADC1，ADC2，从而利用了单片机自带的模拟比较器的复用功能。当A，B相通电期间，C相反电势与中性点N进行比较，类似的，就可以成功检测出各相的过零事件。GGEMULTILIN750FEEDERMANAGEMENTRELAY750-P5-G5-S5-LO-A1-R-EGEGeneralElectricMultilin750-P5-G5-55-HI-A20-RwithSR750-CASESARGEMultilinSR469-CASESR469CASESR469-PS-HI-A20SR469PSHIA20SARGEMultilinSR750FeederManagementRelay750-P5-H1-A20-RFromCanadaGEMultilinSR750750-P5-G5-S5-HI-A1-RFeederManagementRelaySR750GeneralGEGENERALELECTRICMULTILINMODELSPMSYNCHRONOUSMOTORCONTROL40A201A0.000GEMultilin735-5-5-HI-485SR735FeederProtectionRelayGeneralElectricSR735GEMultilinSR469-P5-HI-A20MotorManagementRelayGeneralElectricSR469CasePQM-T20-C-AGEMultilinPQMT20CAG258GEMultilinSR469-P5-HI-A20MotorManagementRelayGeneralElectricSR4695AmpGEMultilinSR469-P1-HI-A20-EMotorManagementRelayGeneralElectricSR469GEMULTILINPROTECTIVERELAY120VACMODELMTM-120-P-A20CustomsservicesandinternationaltrackingprovidedNNBGEMULTILINSR745C-700CTDAUGHTERBOARDP/N0505-0037-A1GEMultilinFeederSR750-RelayPowerManagementModel750-P5-G5-D5-HI-A20-RCustomsservicesandinternationaltrackingprovidedGEPLUSMULTILINMOTORMANAGEMENTRELAYMODEL269PLUS-100P-120CustomsservicesandinternationaltrackingprovidedGEMultilinMTMPLUSTransducerNEW*GEMULTILIN350FEEDERPROTECTIONRELAY350-E-P5-G5-H-E-M-C-P-3E-D-H*NIBGEGEF-2757MultiLinAuxiliaryRelayHFA51A49FSARGEMultilinSR750750-P5-G5-S5-LO-A20-RFeederManagementRelaySR750GeneralGEMultilinSR760-P1-G1-S1-LO-A20-RFeederManagementRelaySR760GeneralGEMultilin735-5-5-HI-485SR735FeederProtectionRelayGeneralElectricSR5AGEMultilinSR760-P5-G5-S5-HI-A10-RFeederManagementRelaySR760GeneralGEMULTILINSR760760FEEDERMANAGEMENTRELAY760-P1-G1-S1-HI-A1-RNEW*GE345MULTILINTRANSFORMERPROTECTIONRELAY345-E-P5-G5-H-E-M-N-N-2E-D-NGEMultilinSR760-P5-G5-S5-HI-A10-RFeederManagementRelaySR760GeneralNEWGEMultilin469MotorManagementRelayNEWGEMULTILIN269PLUSMOTORMANAGEMENTRELAY269PLUS-100P-HIGEMultilinSR469-P5-LO-A20MotorManagementRelayGeneralElectricSR469NEWNIBGEMULTILIN269PLUSMOTORMANAGEMENTRELAY269PLUS-100P-HIW/SOFTWAREPQM-T20-C-AGeneralElectricGEMultilinC6594432PQMPowerQualityMeterGEMultilinSR750750-P5-G5-D5-HI-A20-RFeederManagementRelaySR750GeneralNNBGEMultilinSR750FeederManagementRelay750-P5-G5-S5-HI-A20-R-TGEMultilinREM735-5-5-HI-485SR735FeederProtectionRelayGeneralElectricGE/MULTILINMMII-PD-1-2-MOD601MOTORMANAGERII***XLNT***GEMultilinSR760760-P5-G5-S5-LO-A20-RFeederManagementRelaySR760GeneralGE(GeneralElectric)Multilin269-10C-H1CustomsservicesandinternationaltrackingprovidedGEMultilinMTMMeterModuleExcellentConditionNEW*GEMULTILINF35FEEDERMANAGEMENTRELAYF35-N00-HLH-F8F-H4A-M4A-PXX-UXX-WXXGEMultilinFeederSR750-RelayPowerManagementModel750-P5-G5-S5-HI-A1-RCustomsservicesandinternationaltrackingprovidedNEW*GEMULTILINSR760760FEEDERMANAGEMENTRELAY760-P1-G1-S1-LO-A1-R-T*NIBGEMultilin565-5-5-O-AFeederManagementRelay565BGEMultilinSR735RelayCustomsservicesandinternationaltrackingprovidedGEMultilinMX350AutoTransferControllerGeneralElectricMX350AutomaticGEGENERALELECTRIC169PLUS-10C-120MULTILIN169MOTORMANAGEMENTRELAY24403GEG60N00HKHF8FH6BM8HPXXUXXWXXMULTILING60GENERATORPROTECTIONSYSTEM**NIB**GEMULTILINTOV4023I030H00CVOLTAGERELAY***NIB***GEMultilin269269Plus-100P-120MotorManagementRelayGeneralElectric269PlusGEMultilin369-HI-R-M-F369MotorManagementRelayFirmware53CMB201.000GEMultilinMIBHighImpedanceDifferentialModuleMIB30HICE00000ProtectionGEGEMultilinT60TransformerManagementRelayT60E00HKHF8NH6CMXXPXXUXXWXXGEGEMultilin***MII-PD512-120SIMotorManagerII***MIIPD512120GeneralElectricGEMultilin***MII-PD511-120SIMotorManagerII***MIIPD511120GeneralElectricGEMultilinPQMPowerQualityMeterGeneralElectricPQMRelayGEMultilinD60LineDistanceRelayD60J03HMHF8LH6NM6NP6CU6CWXXGeneralElectricGEMultilinMMII-PD-1-2-240MM2MotorManagerMMIIPD12240GeneralElectricRelayGEMultilin169169Plus-100P-120MotorManagementRelayGeneralElectric169P100GEMultilinFeederProtectionRelaySR735SR735-5-5-HI-485Ver.#25D152D1.000GEMultilin369-HI-R-M-0-0369MotorManagementRelayFirmware53CMB170.000NEWGEMULTILINfeedermanagementRELAYSR745MODEL#W2P5G5HIARE,newOEMoriginal)