Development of a High Power Piezoelectric Characterization System and Its Application for Resonance/Antiresonance Mode Characterization

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概要

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• We developed a new high power piezoelectric characterization system, and report its application for characterizing the resonance and antiresonance vibration performance in this paper. Although the traditional constant voltage measurement was improved by using a constant current measurement method, the conventional technique was still limited to the vicinity of the resonance. In order to identify a full set of high power electromechanical coupling parameters and the loss factors of a piezoelectric, both resonance and antiresonance vibration performance should be precisely measured simultaneously. However, the high power characterization across antiresonance has not been addressed previously in the literature. Our new high power characterization system reported here is capable of measuring the impedance/admittance curves by keeping the following various conditions: (1) constant voltage, (2) constant current, (3) constant vibration velocity of a piezoelectric sample, and (4) constant input power. In addition, the system is equipped with an infrared image sensor to monitor the heat generation distributed in the test sample. We demonstrated the usefulness of the new system in a rectangular piezoelectric plate in the whole frequency range including the resonance and antiresonance frequencies. The results clearly concluded that compared to the resonance mode, the antiresonance mode exhibits a higher mechanical quality factor $Q_{\text{M}}$ and the same vibration amplitude/velocity under a smaller input electrical power and lower heat generation. This may suggest a superiority of the antiresonance mode usage to the resonance mode from the high power application viewpoint (i.e., ultrasonic motors, transformers).

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2009-05-25

著者

• Ural Seyit

  International Center For Actuators And Transducers Materials Research Institute The Pennsylvania Sta

• Zhuang Yuan

  Electrical Engineering Department, The Pennsylvania State University, University Park, PA 16802, U.S.A.

• Tuncdemir Safakcan

  Electrical Engineering Department, The Pennsylvania State University, University Park, PA 16802, U.S.A.

• Uchino Kenji

  Electrical Engineering Department, The Pennsylvania State University, University Park, PA 16802, U.S.A.

• Ural Seyit

  International Center for Actuators and Transducers, Materials Science and Engineering Department, The Pennsylvania State University, University Park, PA 16802, U.S.A.

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