Taw qhia ntawm Ultrasonic Impedance Analyzer

Qhov ntsuas no yog feem ntau siv rau kev ntsuas tsis taus thiab ntsuas qhov ntsuas ntawm cov khoom siv piezoelectric.

Piezoelectric ceramics yog ib pab pawg ntawm cov khoom siv siv lead ua, nyob rau hauv kev ua ntawm ac voltage, tuaj yeem tsim lub suab kev ncab, yog li ua suab nrov, qhov tshwm sim no hu ua piezoelectric effect hauv physics, piezoelectric effect ntawm ceramics yog hu ua piezoelectric ceramics. Ntawm qhov tsis sib xws, thaum nws raug rau kev siv tshuab siab, txawm tias lub siab me me raws li kev co ntawm lub suab nrov, nws yuav tsim kom ncab thiab lwm yam kev hloov pauv. Raws li cov duab hloov, ob sab ntawm lub siv lead ua yuav tsim hluav taws xob sib txawv.

Piezoelectric transducers muaj li ntawm piezoelectric ceramics tau dhau los ua cov khoom tseem ceeb ntawm kev tsim khoom thiab tau txais lub suab.

Ua ntej siv cov khoom siv piezoelectric, yuav tsum paub txog cov khoom siv dav, feem ntau suav nrog: resonance zaus Fs, anti-resonant zaus Fa, ib nrab fais fab kis ntawm F1 thiab F2, siab tshaj plaws kev nkag siab Gmax, electrostatic capacitors C0, dynamic impedance (R1, C1, L1) kev ywj pheej, lub zog capacitance CT, dielectric tas mus li epsilon 33 t Keff, mechanical Qm zoo tshaj qhov ntsuas thiab electromechanical txuas txuas ntxiv, qhov planar electromechanical txuas txuas ntxiv rau cov khoom siv Kp, thiab lwm yam Yog tias qhov kev lees paub qhov nkhaus ntawm cov khoom siv hluav taws xob piezoelectric yuav ntsuas tau ua ntej cov cuab yeej siv (kev sib nkag siab yog reciprocal ntawm impedance), qhov yuav tsum tau muaj peev xwm tuaj yeem txheeb xyuas thiab rho tawm. Plaub yam ntxwv ntawm piezoelectric pab kiag li lawm (kev ua cim ua cim daim duab, impedance yam ntxwv ntawm daim duab, admittance polar coordinate daim duab thiab impedance polar coordinate daim duab) tuaj yeem tau los ntawm cov kab ke no. Txoj kab ke no tau yooj yim txuag thiab sau cov kev ntsuas ntsuas.

Txoj kab ke no ua ke ua ke nrog kev kho vajtse thiab PC software rau kev ntsuas qhov tsis zoo. Lub system hardware ua tiav lub impedance ntsuas muaj nuj nqi, thaum PC software ua tiav lub impedance tsom xam thiab parameter rho tawm muaj nuj nqi.

Qhov ntsuas no yog siv los qhia txog kev paub thiab siv cov khoom siv piezoelectric. Nws yog cov kev daws teeb meem zoo rau kev ntsuas thiab ntsuas ntawm cov khoom hluav taws xob piezoelectric. Nws tuaj yeem ntsuas tau sai thiab ntsuas tus qauv ntawm cov khoom siv piezoelectric rau ntau lub hom phiaj.