광픽업 엑추에이터의 동특성 및 변경

Dynamic Characteristics and Modification of Optical Pick-up Actuator

  • 김철진 (연세대학교 정보저장기기연구센터) ;
  • 신창훈 (연세대학교 정보저장기기연구센) ;
  • 이경택 (연세대학교 정보저장기기연구센) ;
  • 박노철 (연세대학교 정보저장기기연구센) ;
  • 박영필 (연세대학교 기계공학과)
  • 발행 : 2001.11.01

초록

In optical disk drive (ODD), disk rotation speed has been increasing rapidly to achieve high data transfer rate. High servo bandwidths for focusing and tracking actuator are required to follow dynamic disturbance by high rotation speed in ODD. However, the servo bandwidth is significantly limited by some vibration modes which are induced by the flexibility of moving part. In this work, the vibration modes affecting bandwidth of actuators are suppressed by modifying actuating force by VCM. For this, the relation between the horizontal component of the actuating force and vibration mode is analyzed and force characteristic affecting to vibration mode is obtained through electromagnetic and structural analysis using simulation program.

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