Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Fred R. Hansen0
Brian K. Tanner0
Date of Patent
December 23, 2008
Patent Application Number
11421427
Date Filed
May 31, 2006
Patent Primary Examiner
Patent abstract
A method of determining a correction factor for a voice coil motor of a disk drive device is performed by driving a relatively low current through the voice coil motor during a seek operation. Actuator velocity is then measured. A correction factor is calculated as a function of the actuator velocity to allow estimation of velocity as a function of back EMF.
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