Detail publikace

# PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

Petr SEDLAK, Jiri MAJZNER, Pavel TOFEL and Josef SIKULA

Originální název

PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

Anglický název

PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

Jazyk

en

Originální abstrakt

The paper presents the numerical approach and results for piezoelectric transducers electrical and noise characteristics. A method for the numerical analysis of piezoelectric media is based on finite element calculations. The own algorithm was developed in MATLAB. For simplicity, only the piezoelectric parts of transducers were under study. The three identical samples were investigated and compared by two different ways. The theoretical result corresponds with experimental results which were measured by noise measurement set-up. The main difference between the numerical result and other methods could be in consequence of computing with constant relative permittivity. The agreement can be done only for the first resonant mode. To coincide the experiment with theoretical model, it is necessary to include the piezoelectric material permittivity frequency dependence. With increasing frequency the permittivity decreases. Nevertheless the simulations give the good estimation for designer of piezoceramic sensors.

Anglický abstrakt

The paper presents the numerical approach and results for piezoelectric transducers electrical and noise characteristics. A method for the numerical analysis of piezoelectric media is based on finite element calculations. The own algorithm was developed in MATLAB. For simplicity, only the piezoelectric parts of transducers were under study. The three identical samples were investigated and compared by two different ways. The theoretical result corresponds with experimental results which were measured by noise measurement set-up. The main difference between the numerical result and other methods could be in consequence of computing with constant relative permittivity. The agreement can be done only for the first resonant mode. To coincide the experiment with theoretical model, it is necessary to include the piezoelectric material permittivity frequency dependence. With increasing frequency the permittivity decreases. Nevertheless the simulations give the good estimation for designer of piezoceramic sensors.

Dokumenty

BibTex

``````
@inproceedings{BUT19928,
author="Petr {Sedlák} and Jiří {Majzner} and Pavel {Tofel} and Josef {Šikula}",
title="PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING",
annote="The paper presents the numerical approach and results for piezoelectric transducers electrical and noise characteristics. A method for the numerical analysis of piezoelectric media is based on finite element calculations. The own algorithm was developed in MATLAB. For simplicity, only the piezoelectric parts of transducers were under study. The three identical samples were investigated and compared by two different ways. The theoretical result corresponds with experimental results which were measured by noise measurement set-up. The main difference between the numerical result and other methods could be in consequence of computing with constant relative permittivity. The agreement can be done only for the first resonant mode. To coincide the experiment with theoretical model, it is necessary to include the piezoelectric material permittivity frequency dependence. With increasing frequency the permittivity decreases. Nevertheless the simulations give the good estimation for designer of piezoceramic sensors.",