利用一次正、二次逆压电效应设计可作动传感器研究-豆柴文库

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利用一次正、二次逆压电效应设计可作动传感器研究
Title:DesignandStudyofaBi-DirectionalPiezoelectricSensorutilizingFirstPolarizationandSecondInversePiezoelectricEffect
Abstract:
Piezoelectricsensorsarewidelyusedinvariousapplications,fromindustrialautomationtobiomedicaldevices.Inthispaper,weproposeanoveldesignofabi-directionalpiezoelectricsensorthatexploitsthefirstpolarizationandsecondinversepiezoelectriceffect.Theaimistoenhancethesensingcapabilitiesandbroadentherangeofapplicationsforsuchsensors.Wediscusstheworkingprinciple,designconsiderations,fabricationmethodology,andpotentialapplicationsoftheproposedsensor.Experimentalresultsdemonstratetheeffectivenessandversatilityofthesensorinmeasuringbothcompressiveandtensileforces.
Keywords:piezoelectricsensor,bi-directionalsensing,firstpolarization,secondinversepiezoelectriceffect,applications
1.Introduction:
Piezoelectricmaterialsexhibitthephenomenonofgeneratinganelectricchargewhensubjectedtomechanicalstressandviceversa.Thisuniquepropertyhasledtothedevelopmentofpiezoelectricsensors,whichserveasessentialcomponentsinmanyfields.Conventionally,piezoelectricsensorsutilizeeitherthedirectpiezoelectriceffectortheinversepiezoelectriceffect.Thedirecteffectconvertsmechanicalstrainintoelectricpotential,whiletheinverseeffectconvertsanappliedvoltageintomechanicaldeformation.Mostpiezoelectricsensorsaredesignedtodetecteithercompressiveortensileforces.However,incertainapplications,abi-directionalsensingcapabilityisrequired.Inthispaper,wepresentabi-directionalpiezoelectricsensorthatcombinesthefirstpolarizationandsecondinversepiezoelectriceffecttoenablesensingofbothcompressiveandtensileforces.
2.WorkingPrinciple:
Theproposedsensorconsistsofapiezoelectricmaterial,typicallyleadzirconatetitanate(PZT),sandwichedbetweentwoelectrodes.Whenacompressiveforceisapplied,thepiezoelectricmaterialgeneratesanelectricchargeduetothefirstpolarizationeffect.Thischargeiscollectedbytheelectrodesandcanbemeasuredasavoltageoutput.Conversely,whenatensileforceisapplied,anelectricpotentialisappl