Magnetic disk apparatus

Details Magnetic disk apparatus Magnetic disk apparatus

2005-11-01

2005-11-01

Sniezek, Andrew L. (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078090

Reexamination Certificate

active

06961205

ABSTRACT:
A seek controller corresponds to a velocity control system which produces a target value based upon a target track, a present position, and a remaining distance from a commencement of a seek operation up to a time instant when a sign of an operating amount is changed; and the seek controller corresponds to a Two Degree of Freedom control system which sets an waveform by a function of time as a target value after the time instant when the sign of the operating amount is changed. The hard disk drives applies a velocity control system based upon a deviation of head positions as to a VCM voltage saturation and a uniform velocity mode, and also, applies a Two Degree of Freedom control system with employment of a function of time having a smooth locus in a decelerated velocity mode so as to suppress residual vibrations.

REFERENCES:
patent: 5343131 (1994-08-01), Baumann
patent: 5345348 (1994-09-01), Suzuki
patent: 5936792 (1999-08-01), Kobayashi et al.
patent: 6819522 (2004-11-01), Atsumi et al.
patent: 6831809 (2004-12-01), Kagami et al.
patent: A-9-73618 (1997-03-01), None

Affiliated with

Also associated with

Rating

Magnetic disk apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic disk apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disk apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3473593