Disk drive positioning system providing fault-free protection ag

Details Disk drive positioning system providing fault-free protection ag Disk drive positioning system providing fault-free protection ag

1983-07-12

1985-11-12

Cardillo, Jr., Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 77, 360 78, 318626, G11B 2102, G05G 500

Patent

active

045531811

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.

REFERENCES:
patent: 2917694 (1959-12-01), Ashcraft
patent: 3795853 (1974-03-01), Whitehouse
patent: 3936876 (1976-02-01), Taylor
patent: 4321517 (1982-03-01), Touchton et al.
patent: 4375611 (1983-03-01), Greig

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