Disk drive positioning system providing fault-free protection against endstop head crashes by use of a passive network in the actuator driving signal path
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United States of America Patent
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Nov 12, 1985
Grant Date -
N/A
app pub date -
Jul 12, 1983
filing date -
Jul 12, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Damaging head crashes are prevented in a disk drive system by providing a specially chosen RC network between the head position control servo and the head actuator. The values of the RC network are chosen in conjunction with the servo output voltage so that, without detracting from head access time, the maximum head velocity will be limited to a value which will prevent damaging head crashes even when a fault occurs in the system.
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