Innovative three-axial actuator for high-density optical drive

Yung Sung Lan*, Chung-Hao Tien

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

As the density in optical data storage systems increases, a drive capable of tilt control thus becomes necessary in order to improve the tilt margin as the coma aberration is accordingly increased. In this paper, we propose an innovative three-axial actuator based on a traditional four-wire scheme with an additional pair of tilting magnets. The proposed coil-driven servo can independently compensate ± 1 tilt degree associated with a torque variation of less than 5 %. The driving forces of the focusing and tracking are kept constant while the tilt servo is activated.

Original languageEnglish
Pages (from-to)4102-4105
Number of pages4
JournalIEEE Transactions on Magnetics
Volume43
Issue number12
DOIs
StatePublished - 1 Dec 2007

Keywords

  • Electromagnetic force
  • Magnetization
  • Optical pickup actuator
  • Three-axis

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