Magnetostriction type torque sensor

Details Magnetostriction type torque sensor Magnetostriction type torque sensor

1988-06-24

1989-12-19

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

7386236, G01L 302

Patent

active

048874612

ABSTRACT:
A torque sensor for use in automotive transmissions includes first and second sets of grooves define first and second sets of elongate projections which are respectively subject to compression and elongation when the shaft in which they are defined, is subject to torque. Two yoked coils which are excited with an alternating current, are each disposed close to a set of projections. The compression and elongation of the projections changes the amount of magnetic flux which flows along the projections and therefore the inductance of the coils. The coils form part of a bridge circuit which is sensitive to the change in inductance in a manner which enables the amount of torque to be measured.

REFERENCES:
patent: 4364278 (1982-12-01), Horter et al.
patent: 4506554 (1985-03-01), Blomkvist et al.
patent: 4550618 (1985-11-01), Kohama et al.

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