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Design of Surface Acoustic Wave Motors With Non-piezoelectric Stator Material

Authors:
Richard Günther
René Richter
Jens Lienig

Keywords: piezoelectric motor, ultrasonic motor, SAW motor, Rayleigh waves, PZT

Abstract:
Surface Acoustic Wave (SAW) motors are specific piezoelectric motors that use traveling waves instead of the stator’s natural vibration. Despite their promising potential due to their high blocking forces, high positioning accuracy and simple design, practical applications of these novel motors are still missing. Hence, we present guidelines for designing such an SAW motor. By focusing on a non-piezoelectric stator material, a wide range of stator materials can potentially be used. First, we introduce the structure of a Finite Element Method (FEM) analysis, which allows for the application and design of piezoelectric units. Furthermore, a numerical motor model is described, which calculates characteristics of such a motor. The focus is on expansions, considering the dynamic losses of the motor, as well as roughness and flatness of its contact surfaces. Our findings allow the design and improvement of SAW motors with non-piezoelectric stator material, thus contributing to their first practical application.

Pages: 45 to 50

Copyright: Copyright (c) IARIA, 2021

Publication date: July 18, 2021

Published in: conference

ISSN: 2519-836X

ISBN: 978-1-61208-875-4

Location: Nice, France

Dates: from July 18, 2021 to July 22, 2021