Method, medium, and apparatus controlling track seek in a...

Details Method, medium, and apparatus controlling track seek in a... Method, medium, and apparatus controlling track seek in a...

2007-07-24

2007-07-24

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078090

Reexamination Certificate

active

11291926

ABSTRACT:
A method, medium, and apparatus controlling a hard disk drive, and more particularly, a method, medium, and apparatus controlling a track seek of a hard disk drive, where the hard disk drive compensates for a gain distortion and a phase delay caused by a notch filter and a VCM driver using a sinewave acceleration trajectory. According to the method of controlling a track seek of a hard disk drive, an ideal sinewave for obtaining a position y*(n), a velocity v*(n), and an acceleration a*(n), according to a sinewave acceleration trajectory, and a sinewave indicating a gain distortion and a phase delay may be integrated and a VCM driving current u(n) can be generated by the integrated sinewave for compensating for gain distortion and phase delay, compensating for a value C(j2πf) of the gain distortion and the phase delay caused by the notch filter and the VCM driver.

REFERENCES:
patent: 6614615 (2003-09-01), Ju et al.
patent: 2003/0072102 (2003-04-01), Kisaka
patent: 8-7506 (1996-01-01), None
patent: 10-241306 (1998-09-01), None
patent: 2002-133799 (2002-05-01), None
patent: 2002-279740 (2002-09-01), None
patent: 2004-52273 (2004-06-01), None

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