Method and system for head position control in embedded disk drive controllers
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United States of America Patent
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Nov 21, 2006
Issued Date -
N/A
app pub date -
Mar 4, 2004
filing date -
Feb 10, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A track follow controller ('TFC') in an embedded disk controller is provided. The TFC includes, a position error calculator that determines a linear position of a head based on burst format and determines a position error based on the linear position and a target position; and a position error output compensator that receives a position error signal from the position error calculator and filters the position error signal. The burst format includes at least a first burst pair format that includes x bursts and a second burst pair format that includes y bursts, where x is unequal to y. The position error calculator includes a burst selector that can select a burst pair; a linear position calculator that calculates head linear position based on burst pair format; and an error calculator that determines the position error based on the linear position and target position.
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