Sensors 2012, 12(9), 11559-11570; doi:10.3390/s120911559
Article

A Method for Evaluating the Electro-Mechanical Characteristics of Piezoelectric Actuators during Motion

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Received: 15 June 2012; in revised form: 8 August 2012 / Accepted: 14 August 2012 / Published: 24 August 2012
(This article belongs to the Special Issue Transducer Systems)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The electro-mechanical characteristics of piezoelectric actuators which have being driven are evaluated in this paper. The force generated by actuators is measured as an inertial force of a corner cub prism which is attached to the actuators. The Doppler frequency shift of a laser beam, due to the motion of actuator, is accurately measured by a heterodyne interferometer. Subsequently, the mechanical quantities, such as velocity, acceleration, force, power and displacement, are calculated from the Doppler frequency shift. With the measurement results of current and voltage of the actuator, the relationships between electrical and mechanical characteristics are evaluated.
Keywords: piezo actuator; Doppler frequency shift; dynamic measurement; interferometer
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MDPI and ACS Style

Jin, T.; Takita, A.; Djamal, M.; Hou, W.; Jia, H.; Fujii, Y. A Method for Evaluating the Electro-Mechanical Characteristics of Piezoelectric Actuators during Motion. Sensors 2012, 12, 11559-11570.

AMA Style

Jin T, Takita A, Djamal M, Hou W, Jia H, Fujii Y. A Method for Evaluating the Electro-Mechanical Characteristics of Piezoelectric Actuators during Motion. Sensors. 2012; 12(9):11559-11570.

Chicago/Turabian Style

Jin, Tao; Takita, Akihiro; Djamal, Mitra; Hou, Wenmei; Jia, Hongzhi; Fujii, Yusaku. 2012. "A Method for Evaluating the Electro-Mechanical Characteristics of Piezoelectric Actuators during Motion." Sensors 12, no. 9: 11559-11570.


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