The characteristics of the HDD vibration and the unbalance vibration control by disk balancing

하드디스크의 진동특성 및 디스크 발란싱에 의한 불평형진동 보정방법

  • 최현 (시그널링크(주)) ;
  • 이재원 (시그널링크(주)) ;
  • 박노철 (연세대학교정보저장기기 연구센터) ;
  • 박영필 (연세대학교정보저장기기 연구센터)
  • Published : 2003.05.01

Abstract

With the rotational speed of the hard disk drive (HDD) increased, the low frequency structural vibration induced by the unbalance force gives rise to the structure home noise of the personal computer, and finally degrades the noise quality. As the unbalance of the hard disk drive is decided by the mechanical assembly allowance between clamping and platter disk, there is limit to control this unbalance by the improved assembly method. To improve the noise and vibration performance of PC, basically the unbalance of HDD needs to be measured absolutely and reduced during the stage of the disk assembly. This study introduces the HDD unbalance measurement methods of the absolute magnitude based on the mobility concept, and the unbalance location information with the acceleration orbit.

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