Application of voice coil motors in active dynamic vibration absorbers

Author

Chen, Yi-De ; Fuh, Chyun-Chau ; Tung, Pi-Cheng

Author_Institution

Dept. of Mech. Eng., Nat. Central Univ., Taoyuan, Taiwan

Volume

41

Issue

3

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

1149

Lastpage

1154

Abstract

A dynamic vibration absorber reduces the influence of a force whose excitation frequency nearly coincides with the natural frequency of a rotating machine. However, the performance of this type of passive absorber can be affected by changes in the environment. In this paper, we describe a voice coil motor (VCM) that can serve as the actuator in an active dynamic vibration absorber which can be regulated for different conditions. With a VCM, suitable controllers can be designed for periodic excitation force rejection by using the characteristics of the notch filter in combination with the root-locus theorem. We have evaluated the performance of the active vibration absorber by both simulations and experiments.

Keywords

actuators; coils; controllers; electric machines; notch filters; performance evaluation; root loci; vibration control; active dynamic vibration absorbers; controllers; excitation frequency; notch filter; passive absorber; periodic excitation force rejection; root-locus theorem; rotating machine; voice coil motors; Coils; Filters; Force control; Frequency; Integrated circuit noise; Isolators; Machinery production industries; Manufacturing industries; Piezoelectric actuators; Vibration control; Active vibration absorber; notch filter; root-locus theorem; voice coil motors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.843329

Filename

1406107