公开(公告)号：EP2862170A1

公开(公告)日：2015-04-22

申请号：EP13806537.0

申请日：2013-06-18

申请人： International Business Machines Corporation

发明人： PANTAZI, Angeliki ,  BUI, Nhan Xuan ,  JELITTO, Jens

IPC分类号： G11B5/584 ,  G11B5/008

CPC分类号： G11B5/584

摘要： A tape drive configured to accurately position a head actuator in the presence of physical disturbances is disclosed. The tape drive includes a track-follow controller to position a head actuator over data tracks on magnetic tape. The tape drive further includes a disturbance observer configured to estimate a vibration disturbance and output a compensation signal to assist the track- follow controller to accurately position the head actuator over the data tracks in the presence of vibration. When estimating the vibration disturbance, the disturbance observer takes into account vibration frequency characteristics, such as frequency characteristics derived from a vibration specification associated with the tape drive, or frequency characteristics derived from known vibration disturbances experienced by the tape drive. A corresponding method is also disclosed.