Magnetic disk device and method of controlling magnetic heads
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United States of America Patent
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Aug 26, 2014
Grant Date -
Jul 17, 2014
app pub date -
Mar 14, 2013
filing date -
Jan 11, 2013
priority date (Note) -
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Abstract
According to one embodiment, a magnetic disk device includes: magnetic heads; a magnetic disk in which servo patterns having different write frequencies from one another are divided and recorded into a plurality of zones; and a head controller configured such that, when performing seek control of the magnetic heads based on a model position and a model velocity obtained from a model which simulates the magnetic heads, the head controller corrects the model position and the model velocity, at the time of switching of the zones, so as to reflect variation of sampling time resulting from gaps between the zones.
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