Micro rotary-linear ultrasonic motor for endovascular diagnosis and surgery

Tomoaki Mashimo, Shigeki Toyama

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

17 Citations (Scopus)

Abstract

We present a micro ultrasonic motor having rotary and linear motions (rotary-linear motor) suitable for endovascular diagnosis and surgery. The rotary-linear motor is miniaturized to the size needed to function in a blood vessel. The stator prototype is a cube of side 3.5mm, and the main body is fabricated as a single metallic cube with a through-hole. Four piezoelectric elements are bonded to the sides of the stator. When AC voltage at each resonant frequency is applied to the piezoelectric elements, the circumference of the stator generates elliptical motions at each natural frequency. We can obtain the output from a shaft inserted through the hole. We developed the first prototype of the stator using the finite element method (FEM), and experimentally determined the output of the rotary-linear motor. In the rotary sense, approximately 260 rpm and 0.1 mNm were attained at a resonant frequency of 270 kHz, and in the linear sense about 50 mm/s and 0.01 mN was attained at 306 kHz by driving the system at applied voltages of 42 Vrms.

Original languageEnglish
Title of host publication2008 IEEE International Conference on Robotics and Automation, ICRA 2008
Pages3600-3605
Number of pages6
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event2008 IEEE International Conference on Robotics and Automation, ICRA 2008 - Pasadena, CA, United States
Duration: May 19 2008May 23 2008

Publication series

NameProceedings - IEEE International Conference on Robotics and Automation
ISSN (Print)1050-4729

Conference

Conference2008 IEEE International Conference on Robotics and Automation, ICRA 2008
Country/TerritoryUnited States
CityPasadena, CA
Period5/19/085/23/08

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Artificial Intelligence
  • Electrical and Electronic Engineering

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