DocumentCode
1067076
Title
A high-power traveling wave ultrasonic motor
Author
Iula, Antonio ; Pappalardo, Massimo
Author_Institution
Member; Dipartimento di Ingegneria Elettronica, Universita Roma Tre, Via della Vasca Navale, 84-00146, Roma, Italy
Volume
53
Issue
7
fYear
2006
fDate
7/1/2006 12:00:00 AM
Firstpage
1344
Lastpage
1351
Abstract
In the present work, a traveling wave ultrasonic motor (TWUSM) is proposed. It is composed of an annular-shaped stator and two cone-shaped rotors that are pressed in contact to the borders of the inner surface of the stator. A rotating traveling wave has been generated in the stator by using as vibration generators two bolted Langevin transducers (BLT) opportunely shifted in space and in time. The vibrational behavior of the stator as well as the traveling wave generation has been simulated with the finite-element method (FEM) software. A prototype of the motor has been manufactured and experimentally characterized. It exhibits a static torque of about 0.8 N·m and a maximum angular speed of about 300 rpm. Possible variations of the present design aimed to increase output torque or minimize encumbrance are described and discussed.
Keywords
Impedance; Resonant frequency; Rotors; Stators; Surface impedance; Transducers; Vibrations;
fLanguage
English
Journal_Title
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher
ieee
ISSN
0885-3010
Type
jour
DOI
10.1109/TUFFC.2006.1665083
Filename
1665083
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