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Title: Design of Unimorph Type 3DOF Ultrasonic Motor
Authors: Jūrėnas, Vytautas
Kazokaitis, Gražvydas
Mažeika, Dalius
Keywords: piezoelectric actuator
3DOF actuator
spherical rotor
ultrasonic motor
unimorph
FEM
piezoelectric transducer
piezoelectric drive
precise rotation
Issue Date: 2020
Publisher: MDPI
Citation: Jūrėnas, V.; Kazokaitis, G.; Mažeika, D. Design of Unimorph Type 3DOF Ultrasonic Motor. Appl. Sci. 2020, 10, 5605.
Series/Report no.: 10;16
Abstract: A new design of 3 degrees of freedom (DOF) piezoelectric ultrasonic motor (USM) is introduced in this paper. The concept of this design is to incorporate a spherical rotor between two piezoelectric transducers. Each transducer is coupled with a flange, and it operates like a unimorph structure. Such a design of the transducer allows to increase the amplitude of the vibrations and to generate the higher torque and driving force used to achieve 3DOF rotary motion of the spherical rotor. The proposed USM may be used for humanoid robots, optomechanical systems, or small satellites. This USM consists of several components, is lightweight and reliable. Numerical analysis and experimental studies were performed to validate the feasibility of this drive, to find out proper resonant frequencies for the unimorph, and optimize the shape of the flange. Experimental studies were accomplished to validate the results of the numerical analysis and to validate the operating principles of the piezoelectric motor.
Description: This article belongs to the Special Issue Ultrasonic Transducers and Related Apparatus and Applications
URI: http://dspace.vgtu.lt/handle/1/4124
ISSN: 2076-3417
Appears in Collections:Moksliniai straipsniai / Research articles

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