Process and apparatus for determining the position of an elongat

Details Process and apparatus for determining the position of an elongat Process and apparatus for determining the position of an elongat

1976-05-13

1978-05-09

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Displacement

324239, G01R 3312

Patent

active

040889521

ABSTRACT:
A process and apparatus for determining the position of elongated objects such as insulated cable, tubing, and the like, with respect to a reference axis, for example, that of a vulcanizing tube in which a localized magnetic alternating field is produced around a specified section of the object and the intensity of the magnetic field produced by the current induced in the object is diametrically measured at a distance from this section. A signal proportional to the sum of measured field intensities is used to regulate the field strength of the localized magnetic field so that a signal proportional to the difference of the measured field intensities becomes an indication of the absolute position of the object with respect to the reference axis.

REFERENCES:
patent: 3250983 (1966-05-01), Atkinson
patent: 3470460 (1969-09-01), Panofsky et al.

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