Pregled bibliografske jedinice broj: 202235
Estimating ultrasound transducer parameters using KLM equivalent circuit model
Estimating ultrasound transducer parameters using KLM equivalent circuit model // Proceedings of Forum Acusticum 2005 Budapest / Augusztinovicz, Fülöp ; Nagy, Attila Balázs ; Hunyadi, Zoltán (ur.).
Budimpešta: OPAKFI Tudományos Egyesület, 2005. str. 2773-2778 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 202235 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Estimating ultrasound transducer parameters using KLM equivalent circuit model
Autori
Jambrošić, Kristian ; Ivančević, Bojan ; Petošić, Antonio
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of Forum Acusticum 2005 Budapest
/ Augusztinovicz, Fülöp ; Nagy, Attila Balázs ; Hunyadi, Zoltán - Budimpešta : OPAKFI Tudományos Egyesület, 2005, 2773-2778
Skup
Forum Acusticum 2005 Budapest
Mjesto i datum
Budimpešta, Mađarska, 29.08.2005. - 02.09.2005
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
ultrasound transmitters; piezoceramic PZT-5A element; front-layer element; KLM model
Sažetak
Calculation scheme for estimating ultrasound piezoelectric transducer parameters in form of KLM equivalent circuit has been implemented in MATLAB and used to characterize transducer before its physical construction. Input parameters for equivalent circuits have been found using impedance data measurements of piezoceramic samples as free resonators. Equivalent circuits enable flexible estimation of input impedance of transducer system and gives approximately transfer function of the system in frequency domain near thickness extensional (TE) mode. Transfer function can be given as a ratio of radiated pressure, surface velocity or force (on active surface) and applied voltage in frequency domain. Several configurations of transducers have been made from PZT-5A ceramic of different thickness and diameter for studying influence of ultrasound field on human tissue. Transducers were constructed as systems with active piezoelectric element, n· ; ; ; ; λ /4 matching element section in front of active element face (made from perspex), air-backing on back face, and cable. Estimated input impedance of ultrasound system radiating in water depending on frequency using KLM equivalent circuit model is compared with measurement results in frequency range near TE mode of constructed ultrasound transducers configuration. Measured and theoretical conductance is used for calculating available bandwidth of constructed transducers. Transfer function as ratio of force (or pressure) on surface and input voltage is estimated with theoretical KLM model.
Izvorni jezik
Engleski
Znanstvena područja
Elektrotehnika
