Design and simulations of a 2DOF ultrasonic motor

Author

Lee, Fu-Shin ; Chen, Po-Jia ; Tseng, Shao-Chin

Author_Institution

Mechatronical Eng. Dept., Huafan Univ., Taipei, Taiwan

fYear

2005

fDate

11-15 July 2005

Firstpage

303

Abstract

A 2DOF ultrasonic motor structure is designed and simulated using finite element method (FEM) in this study. The ultrasonic motor structure is consist of two resonant driver rods and one driven shaft between. Each driver rod is equipped with four stacked piezoelectric actuators to perform resonant functions. Different resonant modes of the driver rods, the driven shaft, and the overall assembly would be excited to conduct different motion characteristics. Preload and non-preload conditions for the driver rods are studied as well, and assembly of a half portion or an overall ultrasonic motor structure are simulated considering contact and constraint boundaries as well. The adequate resonant modes to perform the driven shaft´s liner and rotary motion, respectively, arc calculated and tabulated in this study.

Keywords

design engineering; finite element analysis; piezoelectric actuators; shafts; ultrasonic motors; 2DOF ultrasonic motor structure; constraint boundaries; contact boundaries; driven shaft; finite element method; resonant driver rod; rotary motion; stacked piezoelectric actuator; Assembly; Biomedical engineering; Design engineering; Finite element methods; Frequency; Piezoelectric actuators; Piezoelectric materials; Resonance; Shafts; Structural rods;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2005. 5th IEEE Conference on

Print_ISBN

0-7803-9199-3

Type

conf

DOI

10.1109/NANO.2005.1500756

Filename

1500756