Information storage disk transducer position control system requ

Details Information storage disk transducer position control system requ Information storage disk transducer position control system requ

1983-12-30

1986-09-23

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 73, 360 77, 318640, 356 285, 369 32, G11B 2108, G01P 336

Patent

active

046139168

ABSTRACT:
The radial position of a transducer used to read and/or write information into or write information into or from a spinning information storage disk (optical or magnetic) is servo controlled by an optical doppler interferometer mounted at least in part for common movement with the transducer. The optical doppler interferometer measures the instantaneous linear velocity of the information storage disk at the position of the transducer (or at a fixed relative position with respect to the transducer) and the position of the transducer is controlled so as to make the measured instantaneous linear velocity follow a reference signal corresponding with the desired information storage track.

REFERENCES:
patent: 3426337 (1969-02-01), Black et al.
patent: 3634682 (1972-01-01), Gold
patent: 3687517 (1972-08-01), Brun
patent: 3720924 (1973-03-01), Aagard
patent: 4067044 (1978-01-01), Maeda et al.
patent: 4104573 (1978-08-01), Goshima et al.
patent: 4221995 (1980-09-01), Barkman
patent: 4371902 (1983-02-01), Baxter et al.
patent: 4470696 (1984-09-01), Ballard
patent: 4499572 (1985-02-01), Yoshikawa et al.
IBM TDB, vol. 25, No. 3A, "Optical Sensor for Track Location in Magnetic Disk Memory", Levenson, 8/82, pp. 1099-1102.
Control Engineering, "Lasers Boost Machine Tool Accuracy", Budzilovich, 12/68, pp. 62-66.
Instruments and Control Systems, "Optical Diffraction Velocimeter", Stavis, 2/66, pp. 99-102.
M. D. Levenson, "Laser Interferometry Technique for Track-Following Servo Control of DASD Head Location", IBM Technical Disclosure Bulletin, vol. 25, No. 3A, Aug. 1982, pp. 1103-1107.

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