Title:
Tape drives and methods for accurate head actuator positioning
Document Type and Number:
Japanese Patent JP6355629
Kind Code:
B2
Abstract:
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.
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Inventors:
Pantatsu, Angeliki
Buoy, Nyan, Suan
Jerito, Jens
Buoy, Nyan, Suan
Jerito, Jens
Application Number:
JP2015517566A
Publication Date:
July 11, 2018
Filing Date:
June 18, 2013
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION
International Classes:
G11B21/10; G05B11/36; G05B13/04; G05D3/12
Domestic Patent References:
| JP9265304A | ||||
| JP6052563A | ||||
| JP9101822A | ||||
| JP8040390A | ||||
| JP2010182411A |
Attorney, Agent or Firm:
Takeshi Ueno
Tasaichi Tanae
Tasaichi Tanae
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