Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Mechanism Design of Optical Pickup Actuator for Fast Access of Optical Disk Drive

광디스크 드라이브의 고속 액세스를 위한 광픽업 액추에이터 메커니즘 설계

  • 박준혁 (연세대학교 대학원 기계공학과) ;
  • 이상헌 (연세대학교 대학원 기계공학과) ;
  • 백윤수 (연세대학교 기계공학과)
  • Published : 2002.12.01
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Abstract

In this paper, mechanism design of optical pickup actuator for fast access is proposed. This actuator is composed of moving magnet type actuator and moving coil type actuator for tracking and fine motion, respectively. Moving magnet type tracking actuator is configurated by two permanent magnets and four air-core solenoids. Additional damper by induced current in tracking actuator can reduce the transient vibration between the coarse seeking servo and fine seeking servo. Variable stiffness can be acquired by applying current to air-core solenoid simply. This actuator can achieve fast access by these additional damper and stiffness. Performance of this actuator is predicted through the FEM, simulation and simple experiment. Settling time for transient vibration is reduced to 14.7% according to simulation result.

Keywords

References

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