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Title: 3DOF Ultrasonic Motor with Two Piezoelectric Rings
Authors: Jūrėnas, Vytautas
Kazokaitis, Gražvydas
Mažeika, Dalius
Keywords: piezoelectric multi-DOF actuator
ultrasonic motor
spherical rotor
electrode segmentation
finite element analysis
ring-shaped piezoelectric transducer
Issue Date: 2020
Publisher: MDPI
Citation: Jūrėnas, V.; Kazokaitis, G.; Mažeika, D. 3DOF Ultrasonic Motor with Two Piezoelectric Rings. Sensors 2020, 20, 834.
Series/Report no.: 20;3
Abstract: A novel design of a multiple degrees of freedom (multi-DOF) piezoelectric ultrasonic motor (USM) is presented in the paper. The main idea of the motor design is to combine the magnetic sphere type rotor and two oppositely placed ring-shaped piezoelectric actuators into one mechanism. Such a structure increases impact force and allows rotation of the sphere with higher torque. The main purpose of USM development was to design a motor for attitude control systems used in small satellites. A permanent magnetic sphere with a magnetic dipole is used for orientation and positioning when the sphere is rotated to the desired position and the magnetic field synchronizes with the Earth’s magnetic dipole. Also, the proposed motor can be installed and used for robotic systems, laser beam manipulation, etc. The system has a minimal number of components, small weight, and high reliability. Numerical simulation and experimental studies were used to verify the operating principles of the USM. Numerical simulation of a piezoelectric actuator was used to perform modal frequency and harmonic response analysis. Experimental studies were performed to measure both mechanical and electrical characteristics of the piezoelectric motor.
Description: This article belongs to the Special Issue Development of Piezoelectric Sensors and Actuators
ISSN: 1424-8220
Appears in Collections:Moksliniai straipsniai / Research articles

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