Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2009-05-04
2010-11-23
Sniezek, Andrew L (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S078040, C360S078140
Reexamination Certificate
active
07839600
ABSTRACT:
A method of tuning a seek operation of a disk drive is disclosed, the disk drive comprising a disk, an actuator arm, a head coupled to a distal end of the actuator arm, a voice coil motor (VCM) for rotating the actuator arm about a pivot, and a closed loop servo system for generating a VCM control signal applied to the VCM. A function h is applied to the closed loop servo system and a corresponding output g of the closed loop servo system is measured. A reference signal is generated in response to a summation of a plurality of the function h, wherein each of the plurality of the function h is shifted by an offset and scaled by a coefficient, and the coefficients are generated in response to the measured output g.
REFERENCES:
patent: 6031684 (2000-02-01), Gregg
patent: 6490120 (2002-12-01), Burton et al.
patent: 6501613 (2002-12-01), Shih
patent: 6563663 (2003-05-01), Bi et al.
patent: 6636377 (2003-10-01), Yu et al.
patent: 6686716 (2004-02-01), Predina et al.
patent: 6999267 (2006-02-01), Melkote et al.
patent: 7170581 (2007-01-01), Tousain
patent: 7298574 (2007-11-01), Melkote et al.
patent: 7626782 (2009-12-01), Yu et al.
patent: 2002/0006010 (2002-01-01), Ding et al.
Yangquan Chen, et al., “Iterative Learning Control and Repetitive Control in Hard Disk Drive Industry—A Tutorial”, Proceedings 2006 IEEE Conference on Decision and Control, San Diego, CA, Dec. 2006, 14 pages.
Mingxuan Sun, et al., “Closed-loop iterative learning control for non-linear systems with initial shifts”, International Journal of Adaptive Control Signal Process, 16 (7), 2002, pp. 515-538.
Douglas A. Bristow, et al., “A Survey of Iterative Learning Control A learning-based method for high-performance tracking control”, IEEE Control Systems Magazine, Jun. 2006, vol. 26, pp. 96-114.
F. L. Lewis, et al., “System Inversion using Orthogonal Functions*”, Circuits Systems Signal Process, vol. 6, No. 3, 1987, pp. 347-362.
Babinski Alexander
Beker Orhan
Phan Duc T.
Sniezek Andrew L
Western Digital Technologies Inc.
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