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SENSORLIU,KEYWORDSINVERSEMAGNETOSTRICTIVEEFFECTFORCESENSORGIANTMAGNETOSTRICTIVEMATERIALRODMAGNETOSTRICTIVEAHALLEXPOUNDEDFIRSTLYTHEMAGNETICCHARACTERISTICSAREANALYZEDBYFEMAMODELISDEVELOPED‘‘IFEPECTS,SUCHASCOREMATERIALANDEXCITINGMODEISTHEFOCUSOFTHISRESEARCHATPRESENT,THESENSITIVEMATERIALCOMMEASUREISNEEDEDTHEEMERGENCEOFGIANTMAGNETOSTRICTIVEMATERIALGMMPROVIDESANEWTYPEOFSENSITIVEMATERIALFORTHEDEVELOPMENTOFMAGNETOSTRICTIVEFORCESENSORBYRIGHTOFITSEXCELLENTCHARACTERISTICSOFLARGEMAGNETOSTRICTIVECOEFFICIENTATROOMTEMPERATURE1500C210C06–2000C210C06WHICHIS100–1000TIMESHIGHERTHANTHATOFCOMMONMAGNETOSTRICTIVEMATERIAL,HIGHELECTROMECHANICALCOUPLING02632241/SEEFRONTMATTERCROWNCOPYRIGHTC2112010PUBLISHEDBYELSEVIERLTDALLRIGHTSRESERVED⇑CORRESPONDINGAUTHORADDRESSSCHOOLOFMECHANICALENGINEERING,DALIANUNIVERSITYOFTECHNOLOGY,NO2,LINGGONGROAD,GANJINGZIDISTRICT,DALIAN,LIAONINGPROVINCE116024,PRCHINATEL8613940925372；FAX8641184708812EMAILADDRESSHUIFANGL163COMHFLIUMEASUREMENT44201188–95CONTENTSLISTSAVAILABLEATSCIENCEDIRECTMEASUREMENJOURNALHOMEPAGEWWWELSEVIERDOI101016/JMEASUREMENT201009031OFSENSORSINSYSTEMDESIGNSENSORISTHEFIRSTLINKFORMEASURINGANDAUTOMATICCONTROL1THEFORCESENSORISONEOFTHEWIDELYUSEDSENSORSINRECENTYEARS,THEREISANEWTYPEOFFORCESENSORWHICHISMAGNETOSTRICTIVEFORCESENSORCOMPAREDWITHTHEOTHERTYPESOFFORCESENSORS,ITHASOBVIOUSADVANTAGES,SUCHASTHEEFFICIENTCOUPLINGBETWEENTHEELASTICANDMAGNETICSTATES,WITHSTANDINGHEAVYLOAD,SHORTRESPONSETIME,LOWPOWERCONSUMPTION,BETTERCAPABILITYTOADAPTTOHARSHWORKINGENVIRONMENT,ETC2THUS,MAGNETOSTRICTIVEFORCESENSORANDITSRELEVANTASWASUSEDASTHESENSITIVEMATERIALADETECTIONCOILPRODUCEDANINDUCEDCURRENTDUETOTHEMAGNETICFIELDTOMEASUREAPPLIEDFORCE3BAUDENDISTELANDTURNERSTUDIEDARINGMAGNETOSTRICTIVEFORCESENSOR1HOWEVER,THEMAGNETOSTRICTIVECOEFFICIENTOFTHESEMATERIALSUSEDINTHESESENSORSWERESMALL10C06–10C05ANDTHESENSITIVITYWEREPOORINADDITION,THESESENSORSWEREALLBASEDONTHEFARADAYLAWOFELECTROMAGNETICINDUCTIONANDCANONLYMEASUREDYNAMICFORCETHEREFORE,AMAGNETOSTRICTIVEFORCESENSORWITHHIGHSENSITIVITYTHATCANBEUSEDFORSTATICFORCE1INTRODUCTIONTHEWISEWORDSOFANOLDENGINEER,SUREIT,YOUCAN’TCONTROLIT”DEMONSTRATBASEDONTHECOUPLEDLINEARMAGNETOMECHANICALCONSTITUTIVEEQUATIONSANDTHEEXPERIMENTALRESULTSHOWSTHATTHEMODELISGOODATREFLECTINGTHEFORCETHEOPTIMALBIASMAGNETICFIELDANDSENSITIVITYARESTUDIEDTHROUGHEXPERIMENTSTHESENSORSENSITIVITYIS614TIMESHIGHERTHANTHATOFTHESENSORWHICHDOSENOTHAVEASTAINLESSSTEELRINGTHEPAPERLAYSAFOUNDATIONFORTHEDEVELOPMENTOFMAGNETOSTRICTIVEFORCESENSORWITHGIANTMAGNETOSTRICTIVEMATERIALCROWNCOPYRIGHTC2112010PUBLISHEDBYELSEVIERLTDALLRIGHTSRESERVEDYOUCAN’TMEATHEIMPORTANCEMONLYUSEDINMAGNETOSTRICTIVEFORCESENSORARESILICONSTEELSHEET,PERMALLOY,ELECTRICALPUREIRONANDOTHERSOFTMAGNETICMATERIALSKLEINKEANDURASDEVELOPEDACONTACTINGMAGNETOSTRICTIVEFORCESENSORINWHICHSAE1018STEELAVAILABLEONLINE21SEPTEMBER2010FLUXDENSITYVARIATIONUNDERFORCEASPECIALSTRUCTURESURROUNDINGHALLSENSORISPROPOSEDTOIMPROVETHESENSITIVITYTHEDESIGNMETHODOFTHEGIANTMAGNETOSTRICTIVEFORCESENSORISANOVELMAGNETOSTRICTIVESTATICFORCEMAGNETOSTRICTIVEMATERIALZHENYUANJIA,HUIFANGLIU⇑,FUJIWANG,WEIKEYLABORATORYFORPRECISIONANDNONTRADITIONALMACHININGTECHNOLOGYOFMINISTRYARTICLEINFOARTICLEHISTORYRECEIVED27APRIL2010RECEIVEDINREVISEDFORM6SEPTEMBER2010ACCEPTED14SEPTEMBER2010ABSTRACTINORDERTOREALIZESTATICFORCESENSOR,ANOVELRIALRODISPRESENTEDBASEDONTHEGIANTCHUNYAGEOFEDUCATION,DALIANUNIVERSITYOFTECHNOLOGY,DALIAN116024,PRCHINAFORCEMEASURINGANDIMPROVETHESENSITIVITYOFMAGNETOSTRICTIVESTATICFORCESENSORWITHGIANTMAGNETOSTRICTIVEMATESENSORINTEGRATEDINTHESENSORISUSEDTOMEASUREMAGNETICTCOM/LOCATE/MEASUREMENTHIGHSENSITIVEGIANTMAGNETOSTRICTIVESTATICFORCESENSORCIRCUITISNECESSARYDUETOITSQUITELOWPERMEABILITYOFZYJIAETAL/MEASUREMENT44201188–9589WHICHUSESGMMRODASTHESENSITIVEELEMENTASPECIALSTRUCTUREWASPROPOSEDTOIMPROVETHESENSORSENSITIVITYFIRST,THEMEASUREPRINCIPLEANDDESIGNMETHODWEREEXPOUNDEDAFTERWARDS,FEMSOFTWAREWASUSEDTOANALYZEMAGNETICFLUXDENSITYOFTHESENSORTHIRD,AMODELWASESTABLISHEDBASEDONTHECOUPLEDLINEARMAGNETOMECHANICALCONSTITUTIVEEQUATIONSANDMAGNETOSTRICTIONMODELANDITWASVERIFIEDBYEXPERIMENTINADDITION,THESENSORPERFORMANCEUNDERDIFFERENTBIASMAGNETICFILED,LINEARITYANDSENSITIVITYWEREANALYZEDTHROUGHEXPERIMENT2PRINCIPLEOFOPERATIONTHEOPERATIONPRINCIPLEOFTHEMAGNETOSTRICTIVEFORCESENSORISBASEDONTHEINVERSEMAGNETOSTRICTIVEEFFECTINVERSEMAGNETOSTRICTIVEEFFECTALSOKNOWNASTHEVILLARIEFFECTSPECIFIESTHATUNDERACONSTANTMAGNETICFIELD,THEMAGNETICPERMEABILITYOFGMMCHANGESWHENITISSUBJECTEDTOANEXTERNALFORCE7THEESSENCEOFINVERSEMAGNETOSTRICTIVEEFFECTISTHATUNDERSTRESS,MAGNETICDOMAINSINGMMROTATETHISCAUSESTHECHANGEOFMAGNETIZATIONORMAGNETICFLUXDENSITYONTHEONEHAND,MAGNETICFIELDAROUNDGMMRODMAKESMAGNETICDOMAINSROTATETOWARDSTHEDIRECTIONPARALLELTOTHEMAGNETICFIELDONTHEOTHERHAND,STRESSMAKESMAGNETICDOMAINSROTATETOWARDSTHEDIRECTIONPARTICULARTOTHEAPPLIEDSTRESSTHECHANGINGPROCESSISSHOWNINFIG1UNDEREXTERNALSTRESS,MAGNETICDOMAINROTATINGLEADSTOTHECHANGEOFRELATIVEMAGNETICPERMEABILITYOFGMMRODLRFORPOSITIVEGMMINVOLVEDINTHEPAPER,ACCORDINGTOTHETHEORYOFFERROMAGNETICS,IFTHEETERNALSTRESSISCOMPRESSIVES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