Analysis of Suspension State Matrix to Improve L/UL Performance

로드/언로드 성능향상을 위한 서스펜션 상태행렬의 해석

  • 김기훈 (연세대학교 기계공학과 대학원) ;
  • 이용현 (연세대학교 기계공학과) ;
  • 박경수 (삼성전자 스토리지 사업부) ;
  • 박노철 (연세대학교 정보저장기기 연구센터) ;
  • 박영필 (연세대학교 기계공학과)
  • Published : 2007.11.15

Abstract

The HDD (hard disk drive) using Load/Unload (L/UL) technology includes the benefits which are increased areal density, reduced power consumption and improved shock resistance than those of contact-start-stop (CSS). Dynamic L/UL has been widely used in portable hard disk drive and will become the key technology for developing the small form factor hard disk drive. Main design objectives of the L/UL mechanisms are no slider-disk contact or no media damage even with contact during L/UL, and a smooth and short load and unload process. In this paper, we focus on state matrix, pitch static attitude (PSA), roll static attitude (RSA), loading/unloading contour (LC/ULC), impact force and contact. Stability of slider is mainly determined by PSA and RSA. State matrix by PSA and RSA is also important indicator. Therefore we analyze state matrix of SFF HDD suspension through the LC/ULC.

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