Servo gain optimization using model reference seeks in a disc dr

Details Servo gain optimization using model reference seeks in a disc dr Servo gain optimization using model reference seeks in a disc dr

1997-08-29

2000-02-29

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7809, 360 7814, G11B 5596

Patent

active

060316845

ABSTRACT:
An apparatus and method for optimizing the gain of a disc drive servo circuit are disclosed, the servo circuit controllably positioning a head adjacent tracks of a disc of the disc drive. A model reference seek is performed using sinusoidally derived reference current, velocity and position signals to move the head from an initial track to a destination track, during which position error is accumulated over a plurality of time periods associated with the seek. The position error is normalized in relation to the length of the seek. A gain adjustment value is next determined in relation to a difference between the normalized position error and a nominal position error associated with a nominal value of gain for the servo circuit, a scale factor being applied to the difference to control the convergence rate of the gain. The gain is thereafter adjusted using the gain adjustment value.

REFERENCES:
patent: 4907109 (1990-03-01), Senio
patent: 4937689 (1990-06-01), Seaver et al.
patent: 4965501 (1990-10-01), Hashimoto
patent: 5182684 (1993-01-01), Thomas et al.
patent: 5262907 (1993-11-01), Duffy et al.
patent: 5276662 (1994-01-01), Shaver, Jr. et al.
patent: 5381282 (1995-01-01), Arai et al.
patent: 5585976 (1996-12-01), Pham
patent: 5631999 (1997-05-01), Dinsmore
patent: 5659438 (1997-08-01), Sasamoto et al.
patent: 5680272 (1997-10-01), Kadlec et al.
patent: 5847895 (1998-12-01), Romano et al.

Affiliated with

Also associated with

Rating

Servo gain optimization using model reference seeks in a disc dr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Servo gain optimization using model reference seeks in a disc dr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo gain optimization using model reference seeks in a disc dr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-688457