Repeatable runout free servo architecture in direct access stora

Details Repeatable runout free servo architecture in direct access stora Repeatable runout free servo architecture in direct access stora

1996-01-31

2000-08-01

Loomis, Paul

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7704, G11B 5596

Patent

active

060975652

ABSTRACT:
In a direct access storage device including a rotating disk, a head positioned for interaction with said disk, an actuator for carrying said head and a servo system for operating said actuator so as to follow a substantially circular track on said disk by responding to a position error signal, a method for reducing response of the servo system to radial runout of the circular tracks, comprising the steps of obtaining radial runout data; filtering the data; storing the filtered data; subtracting the filtered data from the position error signal to obtain a corrected position error signal; and using the corrected position error signal to control the servo system. A direct access storage device in accordance with the invention includes means for obtaining radial runout data; means for filtering the data; means for storing the filtered data; means for subtracting the filtered data from the position error signal to obtain a corrected position error signal; and means for controlling the servo system using the corrected position error signal.

REFERENCES:
patent: 4594622 (1986-06-01), Wallis
patent: 5010535 (1991-04-01), Davis
patent: 5404253 (1995-04-01), Painter
patent: 5539714 (1996-07-01), Andrews, Jr. et al.
patent: 5550685 (1996-08-01), Drouin
patent: 5592346 (1997-01-01), Sullivan
patent: 5608586 (1997-03-01), Sri-Jayantha et al.
patent: 5617388 (1997-04-01), Ishioka et al.

Affiliated with

Also associated with

Rating

Repeatable runout free servo architecture in direct access stora does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Repeatable runout free servo architecture in direct access stora, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Repeatable runout free servo architecture in direct access stora will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-669792