简介：Thetraditionalproportionalsolenoidhasdisadvantages,suchasbigsizeanddifficultyremoving.Sothispaperintroducesanewtypeofbi-directionalproportionalsolenoid,andexpoundsthestructureandworkingprincipleindetail.Onthisbasis,themathematicalmodeloftheproportionalsolenoidisestablished,anditsoutputcharacteristicisanalyzedbythefiniteelementtoolAnsoft/Maxwell.Itsstructureparameters'influenceontheoutputcharacteristicalsoisdiscussedthroughtheelectromagneticfieldanalysis.Thesimulationresultsshowthatthisnewtypeofbi-directionalproportionalsolenoidcanobtainagoodstaticcharacteristicwithoutthesamemagneticcircuitcontrolofthetraditionalproportionalsolenoid.
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