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http://dx.doi.org/10.4313/JKEM.2019.32.1.30

Study on Design and Driving Characteristics of T-Shaped Piezoelectric Actuators  

Kim, Tae-Hoon (Department of Electrical Engineering, Changwon National University)
Park, Min-Ho (Defense Agency for Technology and Quality)
Jeong, Seong-Su (Department of Electrical Engineering, Changwon National University)
Jun, Ho-Ik (Department of Electrical Engineering, Changwon National University)
Cheon, Seong-Kyu (Department of Electrical Engineering, Changwon National University)
Park, Tae-Gone (Department of Electrical Engineering, Changwon National University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.32, no.1, 2019 , pp. 30-34 More about this Journal
Abstract
A newly proposed T-shape piezoelectric actuator, composed of piezoelectric benders, was designed and studied. This actuator has four legs, and can walk in both forward and backward directions. The piezoelectric actuator has a simple structure and can be easily fabricated. It consists of a piezoelectric bender and a joint. The piezoelectric bender is composed of carbon and ceramic materials. Therefore, there is an advantage in that it can be fabricated on a very small scale. Elliptical displacements of the piezoelectric actuators were analyzed by finite element analysis. Elliptical motion at the tip occurred at two voltages having a 90-degree phase difference. Based on the finite element analysis results, prototype actuators with maximum displacements were fabricated, and the characteristics of their movements were characterized.
Keywords
Piezoelectric actuator; Piezoelectric bender; Elliptical motion; ANSYS; FEA; T-shape;
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