Method and apparatus for measuring the shape of the wavy edges o

Details Method and apparatus for measuring the shape of the wavy edges o Method and apparatus for measuring the shape of the wavy edges o

1975-10-30

1977-04-19

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

33174L, 318653, G01R 3312

Patent

active

040191311

ABSTRACT:
The measuring apparatus comprises an electromagnetic induction type non-contacting distance measuring device including a detection coil disposed near the edge of a running metal strip, a filter for deriving out the high frequency component and the low frequency component of the output of the detection coil, means responsive to the high frequency component for determining the contour of the wavy edge of the strip and means responsive to the low frequency component for adjusting the lateral position of the detection coil with respect to the edge of the metal strip.

REFERENCES:
patent: 3346807 (1967-10-01), Wood et al.
patent: 3502968 (1970-03-01), Tobin, Jr. et al.
patent: 3585495 (1971-06-01), Kubo
patent: 3600672 (1971-08-01), Kubo
patent: 3787726 (1974-01-01), Krapp

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