公开(公告)号：SG91860A1

公开(公告)日：2002-10-15

申请号：SG200002010

申请日：2000-04-10

Applicant: IBM

Inventor： JEFFREY JOSEPH DOBBEK ,  BRYAN SCOTT ROWAN ,  LOUIS JOSEPH SERRANO ,  MANTLE MAN-HON YU

IPC: G11B19/20 ,  G11B19/28 ,  G11B21/02 ,  G11B21/21 ,  H02P29/00

Abstract: Method and system aspects for controlling spindle motor speed during head loading in a disk drive are described. The aspects include inputting a time-varying reference velocity profile signal, and selecting a controller to control spindle motor speed. Further included is feeding forward control signals sufficient to precompensate for drag during a head loading event and maintain spindle motor speed within an operating tolerance.