A comparative analysis of voice coil motors with multisegmented and conventional magnet arrays for rotating data storage devices

Abstract

The recent trend towards higher density and the faster transfer rate in portable rotating data storage devices requires their track-following system to be controlled with high speed and downsized. Usually, a voice coil motor is used in the system as an actuator. In this paper a novel voice coil motor with a multisegmented magnet array is proposed for making the actuating force higher and the size smaller.