Title:
ヘッドを位置付けるための方法及びサーボ・システム
Document Type and Number:
Japanese Patent JP4068959
Kind Code:
B2
Abstract:
A method and position control for a servo system for positioning a head laterally with respect to defined servo tracks. The servo system comprises a servo sensor and detector for sensing lateral position of the head and a compound actuator having a fine actuator portion and a coarse actuator portion. The position control provides position indications for the coarse actuator portion, which may comprise a table relating predetermined nominal lateral position indications to the defined servo tracks. The position control positions the coarse actuator portion at an estimated position with respect to the defined servo tracks, and responds to the servo sensor to determine which servo track is closest to the estimated position. The position control sets the coarse actuator portion position indication to the predetermined nominal lateral position indication of the closest defined servo track, e.g., by looking it up in the table. This thereby corrects the indication of the position of the coarse actuator portion.
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Inventors:
Bui Nyan Juan
Coskey john alexander
Akimitsu Sasaki
Kazuhiro Tsuruta
Coskey john alexander
Akimitsu Sasaki
Kazuhiro Tsuruta
Application Number:
JP2002520217A
Publication Date:
March 26, 2008
Filing Date:
July 06, 2001
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
G11B5/584; G11B5/55; G11B21/08; G11B21/10
Domestic Patent References:
| JP7006338A | ||||
| JP4232675A | ||||
| JP8030942A | ||||
| JP7057229A |
Attorney, Agent or Firm:
Hiroshi Sakaguchi
Yoshihiro City
Takeshi Ueno
Yoshihiro City
Takeshi Ueno