Shaft position controlling system

Details Shaft position controlling system Shaft position controlling system

1975-04-22

1976-10-19

Botz, Eugene G.

Registers

Transfer mechanism

Traveling pawl

318569, 197 18, 197 55, 318562, B41J 2304

Patent

active

039872823

ABSTRACT:
There is disclosed a typewriter using a single element print head wherein the tilt and rotate positions for character selection are obtained by servo systems driving tilt and rotate shafts. The system utilizes a digital multiplexing system whereby common elements in the servo channels are time shared. One common element is a binary arithmetic unit which compares binarily represented actual and desired position values of the shafts to fetch from a memory desired velocity information. The fetched velocity information in binary form is compared with the binarily represented actual velocity of the shafts to generate signals for energizing the servo motors which drive the shafts.

REFERENCES:
patent: 3105927 (1963-10-01), Flatten et al.
patent: 3767990 (1973-10-01), Kreithen et al.
patent: 3789971 (1974-02-01), Deyesso et al.
patent: 3904856 (1975-09-01), Monpetit

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