Weighing transducer yog ib hom khoom tso zis uas hloov cov teeb liab zoo rau hauv cov teeb liab ntsuas hluav taws xob. Qhov hnyav transducers yuav inevitably tsim qhov yuam kev thaum siv. Yog li dab tsi yog qhov ua rau yuam kev thaum siv? Cov editor nram qab no yuav qhia rau koj tias yog vim li cas thiaj cuam tshuam cov nyhuv ntawm qhov hnyav transducer?
Raws li cov khoom siv hlau yog lub cev elastic ntawm lub cev hnyav, thaum cov khoom me me ntawm sab nraud quab yuam thiab micro strain ploj mus, micro strain ploj tom qab lub zog sab nraud ploj mus, tab sis seb nws puas tuaj yeem rov qab los rau qhov qub uas tsis yog - kev ntxhov siab yuav nyob ntawm cov khoom siv hlau ntawm lub cev elastic. Ntau yam.
Yog hais tias lub load quab yuam nkhaus tsis phim lub unloading quab yuam nkhaus, qhov ntau dua qhov sib txawv, qhov ntau dua tus nqi hysteresis. Qhov sib txawv tsuas yog los ntawm kev ruaj ntseg thiab kev sib txig ntawm cov khoom nws tus kheej, cov qauv radial tom qab kev kho cua sov, thiab lwm yam. Paub txog qhov ua rau hysteresis, peb tuaj yeem txo qhov hysteresis los ntawm kev xaiv cov khoom siv hlau tsim nyog thiab siv cov txheej txheem kho cua sov siab kom nce qhov elasticity. Tam sim no, cov khoom siv elastomer feem ntau siv hauv kev lag luam hauv tsev yog 40CrNiMoA, uas tuaj yeem ua tiav cov khoom siv kho tshuab zoo tom qab kev kho cua sov tsim nyog.
Qhov ntsuas ntsuas ntawm qhov hnyav transducer yog tsim los ntawm rhiab kab sib chaws, substrate, txheej thiab txhuas. Nws yog qhov kev tiv thaiv strain nyhuv ntawm lub qhov rooj rhiab heev los ntawm rhiab heev strain nyhuv. Yog tias cov khoom nws tus kheej muaj hysteresis, qhov ntsuas ntsuas kuj muaj hysteresis. Tam sim no, zoo-cov tuam txhab paub txog kev ntsuas ntsuas hauv ntiaj teb tau tsim cov ntsuas ntsuas ntsuas nrog kev txiav txim siab tag nrho ntawm hysteresis thiab txais yuav tus kheej- cov nyiaj them poob haujlwm los txo hysteresis mus rau qib qis tshaj. Qhov no kuj yog ib qho tseem ceeb uas yuav tsum tau xav txog thaum xaiv ib lub xov tooj ntawm tes.
Tom qab lub elastic lub cev thiab lub strain gauge yog tsim tau zoo, lub sensor yuav tsum tau muab kaw nrog ib tug sealant, uas yog tsuas yog siv los kho cov hlau thiab sealing los tiv thaiv lub sab nraud ib puag ncig los ntawm kev cuam tshuam cov kev ua tau zoo ntawm lub sensor. Nyob rau saum npoo, cov sealant kho yog mos, thiab lub zog ntawm elastomer yog negligible. Cov nyhuv no yuav tsum tau txiav txim siab thaum siv rau ib qho me me ntawm lub zog. Thaum lub zog me me yog siv los ua lub cev elastic, lub cev elastic deforms tsawg heev, thiab lub thickness ntawm sealant cuam tshuam rau deformation.
