Active control system and method for reducing disk fluttering induced track misregistrations
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United States of America Patent
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May 3, 2005
Grant Date -
Jul 17, 2003
app pub date -
Jun 4, 2002
filing date -
Jan 15, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to controlling an actuator for positioning a read/write head in storage devices such as disk drives. More specifically, the invention relates to using a sensor to detect the disk vibration amplitude perpendicular to the disk surface, and using feed forward control to cancel or counteract the tendency of the read/write head to deviate off-track due to disk vibration. Various approaches are proposed to detect the disk vertical vibration.
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