Point by point positioning apparatus

Details Point by point positioning apparatus Point by point positioning apparatus

1973-07-30

1976-03-16

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Multiple mode systems

318594, 318598, 318685, G05B 1118

Patent

active

039449025

ABSTRACT:
Pointwise positioning apparatus for positioning a movable assembly includes small strip defining a series of positions corresponding to an electrical absolute position coding which co-operates with a movable assembly to produce a pulse signal when the movable assembly is or passes a predetermined coded position. A general control motor is coupled mechanically to a step motor, and a logic circuit actuates the general control motor until a first passage through the predetermined position, whereupon the general control motor is actuated in the opposite sense until the movement of the movable assembly reverses, and then the step motor is actuated until the movable assembly again reaches the predetermined position.

REFERENCES:
patent: 2940031 (1960-06-01), Verhoeff
patent: 2941136 (1960-06-01), Marantette et al.
patent: 3113302 (1963-12-01), Goodman
patent: 3210632 (1965-10-01), Benton et al.
patent: 3246218 (1966-04-01), Centner et al.
patent: 3323030 (1967-05-01), Ihaba et al.
patent: 3339122 (1967-08-01), Sangster
patent: 3360702 (1967-12-01), Lasley et al.
patent: 3449754 (1969-06-01), Stutz
patent: 3465220 (1969-09-01), Rabian et al.
patent: 3659174 (1972-04-01), Bodin

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