Method of eliminating hysteresis from a magnetoelastic...

Details Method of eliminating hysteresis from a magnetoelastic... Method of eliminating hysteresis from a magnetoelastic...

2008-04-01

2008-04-01

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

C029S602100, C324S253000

Reexamination Certificate

active

11232603

ABSTRACT:
A method and device for reducing hysteresis in a torque transducer element includes a coil that is excited with an alternating current to produce a magnetic field that saturates the torque transducer element. Magnetic saturation of the torque transducer element is provided by an alternating frequency that exceeds any coercive force of the material. The alternating current is slowly reduced to substantially reduce undesired magnetic field. The coil assembly is excited with an amplitude frequency in such a manner as to remove only those components of the magnetic field that are not desired.

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