Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Min Chen0
Zhi Wang0
Date of Patent
October 21, 2008
Patent Application Number
11507234
Date Filed
August 21, 2006
Patent Primary Examiner
Patent abstract
A disk drive is disclosed including a disk having a plurality of servo tracks, wherein each servo track comprises a plurality of servo sectors forming N servo wedges, and a wedge time period (WTP) occurs between each servo wedge. A VCM control signal is generated by generating an estimated WTP by detecting the servo sectors, estimating a pivot velocity in response to the estimated WTP, the pivot velocity representing a velocity of an actuator arm about a pivot, generating a pivot friction compensation in response to the estimated pivot velocity, and generating the VCM control signal in response to the pivot friction compensation.
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