Digital multi-rate notch filter for sampled servo digital contro

Details Digital multi-rate notch filter for sampled servo digital contro Digital multi-rate notch filter for sampled servo digital contro

1992-11-12

1994-06-28

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7804, 318611, G11B 5596

Patent

active

053252470

ABSTRACT:
A digital servo control loop for a disk drive head position actuator implements a multi-rate notch filter in order to eliminate actuator resonances at frequencies above the sampling rate Nyquist frequency. The control loop includes circuitry responsive to the periodic digital position values sampled from embedded servo sectors which generates and puts out digital control values at the predetermined sampling rate for controlling the position of the actuator means. A digital multi-rate notch filter receives and filters the digital control values, and generates and puts out notch filtered digital control values to the actuator means at a rate comprising an integral multiple of the predetermined sampling rate.

REFERENCES:
patent: 4398228 (1983-08-01), Bauck
patent: 4638384 (1987-01-01), Stewart et al.
patent: 4679103 (1987-07-01), Workman
patent: 4853797 (1989-08-01), Yamada et al.
patent: 4963806 (1990-10-01), Shinohara et al.
patent: 4964009 (1990-10-01), Moriya et al.
patent: 5032776 (1991-07-01), Caragnon
patent: 5155812 (1992-10-01), Ehlig et al.
McKnight, IEEE Transactions on Magnetics vol. Mag. 14 No. 4, 7/78, "A Track Locating Servo System Utilizing the Data as Absolute Position Transducers".
Wen-Wei Chiang, "Multirate State-Space Digital Controller For Sector Servo Systems" IEEE Proc. 29th Conf. on Dec. and Control, Dec. 1990 pp. 1902-1907.

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