汽车内的电磁辐射干扰与敏感度-研究

汽车内的电磁辐射干扰与敏感度-研究

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时间:2019-02-25

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1、重庆大学硕士学位论文II英文摘要AbstractInrecentyears,vehicletechnologyiscontinuouslydevelopingtowardelectronicandintelligent,electronicequipmentsinvehiclearebecomingmoreandmore,whichmaketheelectromagneticenvironmentofvehiclemorecomplex.Asthetiethatconnectsallkindsofelectronice

2、quipment,wireactsasthetransmissioncarrieroftheelectronicsignal,anditselectromagneticinterferencecharacteristicplaysanimportantpartofroleintheelectromagneticcompatibilityproblemofvehicle.Hybridvehiclewastakenastheresearchobjectinthispaper.Onthebasisofpreviousstud

3、ies,thispapermainlydiscussedthesimulationmodelingofseveraltypicalradiationinterferencesourcesofthevehicle,andthenputtheradiationsourcemodelintothevehiclemodel,intheendthispaperresearchedtheelectromagneticradiationsensitivityproblemofthewire.Themainworksofthispap

4、erareasfollows:1)BasedonMaxwellintegralequation,thispaperintroducedthebasicprincipleofmomentsmethod,thecontinuousequationwasdiscretizedintothealgebraicequations,andasetofbasisfunctionandweightfunctionwouldbeselectedtotransformfunctionsintoamatrixequation,thenthe

5、matrixequationwassolvedtogetthecoefficientmatrix.BasedonthetheoryofMomentofMethod,asimpleandeasyantennamodel,whoseboundaryconditionswassetup,wasbuilt,thenthecurrentdistributionontheantennawasderivedindetail.2)Basedonfieldlinecouplingtheory,inducedcurrentwassolve

6、dinatransmissionlineabovelossyground,andthenaccordingtothescatteringtheoryperunitlengthimpedanceandadmittancewerederivedindetail,finallydifferentiallinesegmentmodelofthetransmissionlineisestablishedabovelossyground.3)Thispaperintroducedthethreeelementsofelectrom

7、agneticinterference,andrevolvedaroundthreeelementstoanalysis.Firstlyitwasanalyzedtheelectromagneticinterferencemechanismofinterferencesourcesinsidevehicle;thenradiationcouplingwasintroducedindetail,andthecommonmoderadiationanddifferentialmoderadiationwereemphati

8、callyanalyzed,theformulaofthecommonmodevoltageanddifferentialmodevoltagewerededucedformula.Theelectromagneticradiationmodelofinterferencesourceswereestablishedaccordi

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