Disk drive positioning system providing passive head crash...

Details Disk drive positioning system providing passive head crash... Disk drive positioning system providing passive head crash...

G - Physics

11

B

352/21.3, 352/24

G11B 5/54 (2006.01) G05D 3/14 (2006.01) G11B 5/55 (2006.01) G11B 19/20 (2006.01) G11B 21/02 (2006.01) G11B 21/08 (2006.01)

Patent

CA 1265241

- 13 - ABSTRACT OF THE DISCLOSURE DISK DRIVE POSITIONING SYSTEM PROVIDING PASSIVE HEAD CRASH PROTECTION 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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