采用磁流体的液压伺服阀力矩马达三维有限元分析

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1、机床与液压Jun．2013HydromechatronicsEngineeringV0l_41No．12DOI：10．3969／j．issn．1001-3881．2013．12．003AnalysisofHydraulicServoValveTorqueMotorwithMagneticFluidUsing3-——DimensionalFiniteElementMethodZHANGZhen，ZENGWen，HANHasiaoqier，LISongjingHarbinInstituteofTechnology，SchoolofMechanicalandEl

2、ectricalEngineering，Harbin150001，ChinaAbstract：Astheelectric-mechanismconvefler。torquemotor；sthekeycomponentoftheelectrohydraulicservovalve。ltscharacteristicsjnfluencetheperformanceofservovalvesignificantly．Sincemagneticfluidshavelargermagneticpermeabilityandbiggermagnetizationint

3、ensityunderanexternalmagneticfield，themagneticcircuiteficiencyofthetorqMemotorandthedynamicperformanceoftheservo-valvecanbeimprovedbyapplyingamagneticfluid．Thispaperpro-posedathree-dimensiona1．finite-elementanalysismodeIoftorquemotorwithmagneticfluid．Themagneticfielddistributionan

4、dthetorqMecharacteristicsofthetorquemotorarestudiedwithorwithoutmagneticfluidsbyusingthree-dimensionalfiniteelementandanalyticalmethods．TheconclusionlsdrawnthatthetorqMecharacteristicsofthetorqMemotorwithmagneticfluidcouldimprovemarkedlyascomparedwiththatwithoutmagneticfluid．Keywo

5、rds：torquemotor，servovalve，magneticfluid，three-dimensionalfiniteelementmethodbeincreasedandthedynamicperformanceoftorque1．Introductionmotorcanbeimprovedsimultaneously．ThetorquemotorofservovalveisthepolarizedelectromagneticServovalveisanindispensableelementtohy·mechanismwiththeinte

6、ractionbetweenpermanentdrauliccontrolsystemsanditsperformancehassig-magnetsandelectromagnets．Onlybyusingthemeth—nificantinfluenceontheperformanceofthesystems．odoffiniteelementanalysis．canpreciseresultsofTorquemotor，whichconvertselectricsignaltome-magneticfielddistributionbeachieve

7、d．Thispaperil-chanicalmovement，isakeyelementoftheelectric—lustratedthestructureandtheworkingprincipleofhydraulicservovalve[1]．Themagneticfluid(MF)servovalvetorquemotortowhichmagneticfluidsareisacolloidalsolutionthatismadefromnanoscaleadded．Theelectromagneticfieldoftorquemotorismag

8、neticparticleswhicharewrappedandd