Magnetoelastic force transducer

Details Magnetoelastic force transducer Magnetoelastic force transducer

1990-01-03

1991-04-16

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

336 20, G01L 112

Patent

active

050072951

ABSTRACT:
A magnetoelastic force transducer according to the invention comprises two closed magnetic circuits. The transducer is constructed in such a way that the reluctance in one of the magnetic circuits will be changed when the transducer is subjected to a force as a result of changes in the magnetic permeability caused by magnetostriction. The second magnetic circuit is formed so as to have an essentially unchanged reluctance when the transducer is loaded and is used to compensate for those changes in the permeability of the material arising for reasons other than magnetostriction.

REFERENCES:
patent: 1906551 (1933-05-01), DeForest
patent: 2557393 (1951-06-01), Rifenbergh
patent: 3122927 (1964-03-01), Chass
patent: 4802368 (1989-02-01), Nordvall

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