Improvement of driving efficiency of ultrasonic motor by improvement of vibration configuration

Shogo Kumamoto, Kyohei Hosoda, Kenjiro Takemura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

An ultrasonic motor is generally composed of a vibrator and a rotor, and is driven by the frictional force between the vibrator/rotor. Since the contact points on the vibrator draw elliptic trajectory, relative speed of the point against the rotor varies even when the rotor rotates with a constant speed. This may cause abrasion between the vibrator/rotor and decrease in driving efficiency. This research proposes a novel method to reduce the relative speed to improve the driving efficiency of ultrasonic motors by superimposing harmonic vibrations with driving vibration. Results of numerical calculation show that driving efficiency may be improved by 27% by the proposed method.

Original languageEnglish
Title of host publicationIEEE International Ultrasonics Symposium, IUS
PublisherIEEE Computer Society
Pages2129-2132
Number of pages4
ISBN (Electronic)9781479970490
DOIs
Publication statusPublished - 2014 Oct 20
Event2014 IEEE International Ultrasonics Symposium, IUS 2014 - Chicago, United States
Duration: 2014 Sep 32014 Sep 6

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Other

Other2014 IEEE International Ultrasonics Symposium, IUS 2014
CountryUnited States
CityChicago
Period14/9/314/9/6

Keywords

  • Efficiency
  • Superimposing harmonic vibration
  • Ultrasonic Motor

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • Cite this

    Kumamoto, S., Hosoda, K., & Takemura, K. (2014). Improvement of driving efficiency of ultrasonic motor by improvement of vibration configuration. In IEEE International Ultrasonics Symposium, IUS (pp. 2129-2132). [6932039] (IEEE International Ultrasonics Symposium, IUS). IEEE Computer Society. https://doi.org/10.1109/ULTSYM.2014.0530