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Measuring Methods for High–Power Characteristics of Piezoelectric Materials

Published online by Cambridge University Press:  16 February 2011

Seiji Hirose ,
Sadayuki Takahashi ,
Kenji Uchino ,
Manabu Aoyagi  and
Yoshiro Tomikawa
Seiji Hirose
Affiliation:
Faculty of Engineering, Yamagata University, Yonezawa, 992, Japan The Pennsylvania State University, MRL, University Park, PA 16802
Sadayuki Takahashi
Affiliation:
The Pennsylvania State University, MRL, University Park, PA 16802 R&D Group, NEC Corp., Miyazaki, Miyamae-ku, Kawasaki, 216, Japan
Kenji Uchino
Affiliation:
The Pennsylvania State University, MRL, University Park, PA 16802
Manabu Aoyagi
Affiliation:
Faculty of Engineering, Yamagata University, Yonezawa, 992, Japan
Yoshiro Tomikawa
Affiliation:
Faculty of Engineering, Yamagata University, Yonezawa, 992, Japan
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Abstract

Two kinds of measuring method of the high-power characteristics of piezoelectric transducers are described. One is the measurement method at the resonance frequency and another is the measurement method at the antiresonance frequency. The vibrational velocity dependences of the equivalent circuit constants and the temperature rise were measured by using each measurement method under the constant vibrational velocity control. These results are useful for designing the ultrasonic power devices such as the ultrasonic motor, and also useful for investigating the new advanced piezoelectric materials for high power use. Especially, by using the results obtained at the antiresonance frequency, a stable state driving method, named as antiresonance driving, with high-efficiency and low-temperature rise can be achieved.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 360 , 1994 , 15
Copyright
Copyright © Materials Research Society 1995

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References

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