永磁電機(jī)非線性振動(dòng)研究.pdf

1、東北大學(xué)碩士學(xué)位論文永磁電機(jī)非線性振動(dòng)研究姓名：李殿起申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：固體力學(xué)指導(dǎo)教師：楊文成趙清2002.3.1Abs仃actComparedwiththetraditionalelectromagneticdrivemotorPermanentMagnetSynchronousMotor(PMSM)isgoodforitshighefficiencysimpleconstructionexcelientperformance

2、，anditcanbecontrolledeasilyBecausethemotorthebaseofitsandtheloadonitformacomplexelectromechaniealcouplingdynamicssystem，therearesomefactorsforexample，themotor’SvibrationitsstabilityofrotationandSOon，whichaffectmotors’Ssa

3、fetylifespanandperformanceorovenmakemotorwreckThestudyonvibrationofmotormainlyincludestwopartsOneiselectromagneticoscillationtheotheriSmechanicaflvibrationTothelatterbecausemotorisaSOrtofrotarymachine，wemustfocusonrotord

4、ynamicsifwewanttomakeclearmechanicalvibrationAlongwiththedevelopmentofmachinemanufacturingtechnologymoreandmoreprecisionrollingbearinghavebeenusedinrotarymachineBut，withthecontinuousincreaseofr01lingbearing’strippingspee

5、d，ithavebroughtUSlotsofquestionsonvibrationForthisreasonthisdissertationfcIOtisonthemechanicalvibrationofPMSMThemaincontentofthisdissertationistostudythedynamicfeaturesofrollingbearingrotorsystemnonlineardynamicfeatureso

6、fPMSMandarmylzetherotor’SmechanicalstrengthandstiffnessofPMSMwithfiniteelementsoftInthestudyofrollingbeatingrntorsystemandnonlineardynamicfeaturesofPMSMwefirstlysetupthedynamicmodelofnonbalancerotorinnonlinearrollingbear

7、ing，andstudythestabilityofnonbalancerotor’SrotationSecondlyweanalysetheinfluencesofunbalancedmagneticpulltomotor’SrotorEventuallyinallusiontothespecificfeaturesoftherollingbearingrotorsystemweobtainthebifurcationdiagrams