Self-compensating device for a magnetic disc apparatus

Details Self-compensating device for a magnetic disc apparatus Self-compensating device for a magnetic disc apparatus

1979-11-01

1982-02-02

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 77, 360106, G11B 2108, G11B 555

Patent

active

043142915

ABSTRACT:
Disclosed is a self-compensating device for a magnetic disc apparatus with a velocity servo system in which a change of the characteristic of an actuator for positioning a read/write transducer is automatically compensated by the combination of a control means and a compensator. While supplying a given velocity command signal to the velocity servo system, the control means measures the motion of the transducer by using a track detector and adjusts the compensator on the basis of the result of the measurement.

REFERENCES:
patent: 3699555 (1972-10-01), DuVall
patent: 3936876 (1976-02-01), Taylor
patent: 4068269 (1978-01-01), Commander et al.
patent: 4096534 (1978-06-01), Brownback et al.
patent: 4133011 (1979-01-01), Kurzweil, Jr.
patent: 4238809 (1980-12-01), Fujiki

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