Armature reaction effect and inductance of moving coil linear oscillatory actuator with unbalanced magnetic circuit

Author

Jang, Seok-Myeong ; Jeong, Sang-Sub

Author_Institution

Dept. of Electr. Eng., Chung Nam Nat. Univ., Taejon, South Korea

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2847

Lastpage

2850

Abstract

The unbalanced reciprocating force due to armature reaction field decreases the advantage of moving coil LOA, such as a high degree of linearity and controllability in the force and motion control. This paper firstly describes the coil inductance, the deviation of flux density, and the unbalanced reciprocation force, which are derived from the permeance model of motor. Secondly, the analytical method is verified using 2D finite element method and tests. Finally, the dynamic simulation algorithm considering the armature reaction and variable inductance is proposed and confirmed through the experiments

Keywords

coils; electromagnetic actuators; finite element analysis; inductance; magnetic circuits; magnetic flux; magnetic forces; 2D finite element method; analytical method; armature reaction field; dynamic simulation algorithm; flux density; inductance; magnetic circuit; moving coil linear oscillatory actuator; permeance model; unbalanced reciprocating force; Armature; Coils; Controllability; Finite element methods; Force control; Inductance; Induction motors; Linearity; Motion control; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951325

Filename

951325