Design Procedure and Analysis of Ramp Profile in SFF HDD

초소형 하드디스크에서 램프 형상 분석 및 설계 프로세스 연구

  • 이용현 (연세대학교 기계공학과 대학원) ;
  • 박경수 (삼성전자 스토리지 사업부) ;
  • 박노철 (연세대학교 정보저장협동과정) ;
  • 양현석 (연세대학교 기계공학과) ;
  • 박영필 (연세대학교 기계공학과)
  • Published : 2006.06.01

Abstract

Vertical L/UL (Load/Unload) velocity is very important parameter to determine the L/UL performance, and the vertical velocity is determined by the actuator velocity and the ramp profile. However, it is not easy to precisely control the actuator rotating velocity during the L/UL process. Especially in emergency parking, servo system doesn't operate, it is impossible to control an actuator velocity. Then, the vertical unloading velocity depends on only ramp profile. The ramp height and the sliding length for L/UL process in SFF (Small Form Factor) HDD are restricted due to slimness and small media. For these reasons, it is very difficult to design the ramp profile in SFF HDD. Therefore, this study analyzes the unloading dynamic characteristics for various ramp profiles and makes the thesis for ramp profile design.

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