Single-Mode Piezoelectric Ultrasonic Transducer Equivalent Circuit Parameter Calculations and Optimization Using Experimental Data

Ricardo Queirós, Pedro Silva Girão, António Cruz Serra
Abstract:
The impedance characteristics of piezoelectric ultrasonic transducers can be described with the help of an electrical equivalent circuit. The circuit permits transducer analysis. Therefore, it is desirable to have a way of determining the equivalent circuit parameters of a given transducer. We propose a method which can basically be divided in two parts: 1) Approximate calculation of the circuit parameters and 2) Increase the accuracy of the parameters by optimization techniques. For its availability and relatively simple implementation, the optimization toolbox of MATLAB was used to perform the second part. The results obtained show a good match between the measured and the optimized data.
Download:
IMEKO-TC4-2005-084.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
TC4 Workshop 2005
Title:

10th IMEKO TC4 International Workshop on ADC Modelling and Testing - IWADC (together with XIVth IMEKO TC4 International Symposium on New Technologies in Measurement and Instrumentation)

Place:
Gdynia/Jurata, POLAND
Time:
12 September 2005 - 15 September 2005