Torque detecting apparatus

Details Torque detecting apparatus Torque detecting apparatus

G - Physics

01

L

73/69

G01L 3/10 (2006.01)

Patent

CA 1316714

Abstract of the Disclosure A torque detecting apparatus utilizing a magneto- elastic effect is disclosed. The apparatus includes a magnetic metal thin strip fixed on the circumferential surface of a torque transmitting shaft as an object of torque detection, an induced magnetic anisotropy given in advance to the magnetic metal thin strip, the induced magnetic anisotropy appearing in a direction of a prin- cipal stress produced in the magnetic metal thin strip when a torque is imposed on the torque transmitting shaft, a shape magnetic anisotropy of the magnetic metal thin strip caused by a shape of the magnetic metal thin strip, the shape magnetic anisotropy appearing in a direction forming an angle of 45° with the direction of the principal stress, and detection means for detecting a change in magnetic anisotropy produced in the magnetic metal thin strip by a torque imposed on the torque transmitting shaft.

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