Control arrangements

Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means

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318674, 318675, G05B 106

Patent

active

040548252

ABSTRACT:
A control arrangement is described for angularly positioning a member such as an aerial structure in which a potentiometer has a continuous circumferential winding with two sets of tappings of at least two tappings and at least three tappings respectively the relative angular position of the two sets of tappings being variable in dependence upon the angular position of the member. Potentials are applied to one set of tappings and the potentials at the other set are compared with respective ones of a set of preset voltages representative of the desired position of the member. The member is driven to change its angular position until the result of comparison indicates that the desired position has been reached.

REFERENCES:
patent: RE26404 (1968-06-01), Lunn et al.
patent: 2294210 (1942-08-01), Roters
patent: 2454184 (1948-11-01), Kliever
patent: 2538415 (1951-01-01), Ergen
patent: 2938154 (1960-05-01), Kirschbaum
patent: 3628121 (1971-12-01), Diprose
patent: 3697849 (1972-10-01), Uchida
patent: 3915325 (1975-10-01), Lark

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