Coarse and fine control for position servo

Details Coarse and fine control for position servo Coarse and fine control for position servo

1974-11-18

1977-02-01

Schaefer, Robert K.

Electricity: motive power systems

Positional servo systems

Multiple mode systems

318603, 318596, G05B 1118

Patent

active

040063941

ABSTRACT:
A closed loop servo system for positioning a head relative to a magnetic recording element wherein track crossings are normally utilized to generate a feedback signal to the servo for positioning the head and wherein for a precise indication of head positioning between track crossings the velocity of movement of the head is integrated and fed into the servo system to provide a fine position signal.

REFERENCES:
patent: 2947929 (1960-08-01), Bower
patent: 3013194 (1961-12-01), Cary
patent: 3105963 (1963-10-01), Stevens et al.
patent: 3458785 (1969-07-01), Sordello
patent: 3512060 (1970-05-01), Floyd
patent: 3523229 (1970-08-01), Black et al.
patent: 3663880 (1972-05-01), Gabor
patent: 3721882 (1973-03-01), Helms
patent: 3736485 (1973-05-01), Scarrott et al.
patent: 3737883 (1973-06-01), Sordello et al.

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