Comparative analysis and modeling of both standing and travelling wave ultrasonic linear motor

Author

Fernandez, José M. ; Perriard, Yves

Author_Institution

Integrated Actuators Lab., Swiss Fed. Inst. of Technol., Lausanne, Switzerland

Volume

2

fYear

2003

fDate

5-8 Oct. 2003

Firstpage

1770

Abstract

A comparative study on the two different kinds of ultrasonic linear motors (ULM), standing and travelling wave types, is described. Analytical modeling using the wave theory and the contact mechanisms is presented. The former is used to describe the wave propagation in the stator, the latter to describe the interface between the slider and the stator, where the tangential and normal forces generated by the contact points allow the slider to describe a linear motion. FEM simulations allow to obtain transient and steady-state responses of the system and also to validate the analytical model. Harmonic analysis is also performed to find out the resonance frequency of the system and thus achieve a maximal amplitude response. In addition to these numerical analyses, some practical results on a standing wave linear motor are presented.

Keywords

finite element analysis; harmonic analysis; linear motors; stators; transient response; ultrasonic motors; FEM; analytical modeling; contact mechanisms; contact points; harmonic analysis; linear motion; maximal amplitude response; normal forces; resonance frequency; slider; standing wave ultrasonic linear motor; stator; steady-state responses; tangential forces; transient responses; travelling wave ultrasonic linear motor; wave propagation; wave theory; Analytical models; Electromagnetic fields; Electromagnetic forces; Frequency; Intellectual property; Manufacturing; Robots; Rotors; Stators; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics, 2003 IEEE Symposium on

Print_ISBN

0-7803-7922-5

Type

conf

DOI

10.1109/ULTSYM.2003.1293255

Filename

1293255