Direct detection of coil resistance
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United States of America Patent
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Jul 12, 2005
Grant Date -
Jan 20, 2005
app pub date -
Jul 18, 2003
filing date -
Jul 18, 2003
priority date (Note) -
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Abstract
Methods and computer program products for determining accurate estimates of coil resistance are provided. A voice coil voltage value and a corresponding voice coil current value are determined during a seek operation. Additionally, a velocity of the voice coil is determined based on servo information read from servo wedges of a disk during the seek operation. Coil resistance is estimated based on the voice coil voltage, the voice coil current and the velocity values.
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