Adaptive head positioning servo-mechanism
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United States of America Patent
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Mar 26, 1991
Grant Date -
N/A
app pub date -
Jun 18, 1987
filing date -
Jun 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A servo system for compensating for environmental forces acting on, for example, a disk drive. A circuit is provided for causing an electrical current to flow in the voice coil controlling a read/write head; the head is caused to seek a predetermined track; and a device adjusts the current delivered to the voice coil so that the force generated thereby at least approximately balances environmental forces acting upon the voice coil so that the read/write head does not move by more than a predetermined amount from said predetermined track.
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