Detection of static and/or quasi-static magnetic fields in magne

Details Detection of static and/or quasi-static magnetic fields in magne Detection of static and/or quasi-static magnetic fields in magne

1990-12-17

1992-06-16

Wieder, Kenneth A.

Electricity: measuring and testing

Magnetic

Stress in material measurement

324225, G01B 724, G01R 3318

Patent

active

051227428

ABSTRACT:
The content of even harmonics is used in both a method and apparatus for the detection of the disturbing static and quasi-static magnetic fields effects in measurement systems using force and torque transducers operating with magnetoelastic effect. The even harmonic content corresponds to the degree of static and/or quasi-static magnetization and is an input signal to a regulator the aid of the direct current in, for example, a separate winding, reduces the static and/or quasi-static magnetization to zero.

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patent: 4716773 (1988-01-01), Nonomara et al.
patent: 4752733 (1988-06-01), Petr et al.
patent: 4760745 (1988-08-01), Garshelis

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