Title :
A torque transducer utilizing two oppositely polarized rings
Author :
Garshelis, Ivan J. ; Conto, Christopher R.
Author_Institution :
Magnetoelastic Devices Inc., Pittsfield, MA, USA
fDate :
11/1/1994 12:00:00 AM
Abstract :
The use of two contiguous rings having oppositely directed circular magnetizations is shown to effectively eliminate the ambiguous effect of ambient axial magnetic fields on the indication of torque as found with single ring transducers. An experimental two ring transducer showed less than 1% of the field sensitivity of a same overall size single ring design while retaining 82% of the sensitivity to torque
Keywords :
magnetic field measurement; magnetic sensors; torque measurement; transducers; ambient axial magnetic fields; contiguous rings; field sensitivity; oppositely directed circular magnetization; oppositely polarized rings; single ring transducers; torque transducer; two ring transducer; Magnetic anisotropy; Magnetic materials; Magnetostriction; Perpendicular magnetic anisotropy; Polarization; Saturation magnetization; Shafts; Tensile stress; Torque; Transducers;
Journal_Title :
Magnetics, IEEE Transactions on
