Low velocity disk drive load controller

Details Low velocity disk drive load controller Low velocity disk drive load controller

1997-07-03

2000-11-28

Klimowicz, William

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 75, 360 7806, G11B 554

Patent

active

061543403

ABSTRACT:
The method disclosed is generally directed to a process for controlling the velocity of an actuator arm assembly during a load from a ramp. A process in accordance with the invention includes applying an alternating current to the VCM to eliminate frictional effects. An increasing current is applied to the VCM. The increasing current is an increasing function of time in one embodiment of the invention and is determined such that the heads are loaded at a predetermined velocity. In one embodiment, the predetermined velocity is 1 in/sec.

REFERENCES:
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patent: 4589036 (1986-05-01), Bertschy et al.
patent: 4755892 (1988-07-01), Carteau et al.
patent: 4864437 (1989-09-01), Couse et al.
patent: 5018029 (1991-05-01), Ekhoff et al.
patent: 5315455 (1994-05-01), Ito
patent: 5384675 (1995-01-01), Crawforth et al.
patent: 5615064 (1997-03-01), Blank et al.
patent: 5663846 (1997-09-01), Masuoka et al.
patent: 5828522 (1998-10-01), Brown et al.

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