Transient vibration measurement of an ultrasonic motor using stroboscopic phase-shift interferometry

Yoshihide Nishikura, Akihiro Torii, Akiteru Ueda, Kazuhiro Hane

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

We will propose a method to visualize transient vibration of an ultrasonic motor(USM). Since a mechanical time constant is much larger than an electrical time constant, a mechanical transient phenomenon is excited at the starting of the USM. A stroboscopic phase-shift interferometry is used to measure the small and high speed vibration. The Fizeau-type interferometer is realized with a multi-mode semiconductor laser diode and an optical isolator. A laser beam is irradiated stroboscopically. An irradiation time of the laser beam is much shorter than the vibration period of the USM. Since a short irradiation time of the laser beam reduces a contrast of interferogram, the laser beam is irradiated periodically synchronized by a gate signal which drives/stops an USM stator. These vibrations are compared with each other. The method described in this paper will be useful for the transient vibration measurement of the USM.

Original languageEnglish
Pages225-230
Number of pages6
Publication statusPublished - 1998 Dec 1
Externally publishedYes
EventProceedings of the 1998 9th International Symposium on Micromechatronics and Human Science, MHS - Nagoya, Jpn
Duration: 1998 Nov 251998 Nov 28

Other

OtherProceedings of the 1998 9th International Symposium on Micromechatronics and Human Science, MHS
CityNagoya, Jpn
Period98/11/2598/11/28

ASJC Scopus subject areas

  • Engineering(all)

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