Dynamic Analysis of Linear Resonant Actuator Driven by DC Motor Taking into Account Contact Resistance Between Brush and Commutator

Author

Yamaguchi, Tadashi ; Kawase, Yoshihiro ; Suzuki, Satoshi ; Hirata, Katsuhiro ; Ota, Tomohiro ; Hasegawa, Yuya

Author_Institution

Dept. of Inf. Sci., Gifu Univ., Gifu

Volume

44

Issue

6

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1510

Lastpage

1513

Abstract

This paper describes a highly accurate computation technique to obtain the dynamic characteristics of a linear resonant actuator (LRA) driven by the dc brush motor and a magnetic conversion mechanism employing the 3-D finite-element method. In this calculation, the contact resistance between brush and commutator of the dc brush motor is taken into consideration in the electric circuit equation coupled with magnetic field equation. The influences of the contact resistance on the dynamic characteristics are quantitatively investigated, and the importance of the use of appropriate contact resistance is clarified through the comparison with the measurement.

Keywords

DC motors; commutator motors; commutators; contact resistance; electromagnetic actuators; finite element analysis; commutator; contact resistance; coupled analysis method; dc brush motor; electric circuit equation; linear resonant actuator; magnetic conversion mechanism; magnetic field equation; three-dimensional finite-element method; Contact resistance; coupled analysis method; linear resonant actuator (LRA); three-dimensional finite-element method;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.916702

Filename

4527027