Torque detector

Details Torque detector Torque detector

1991-08-16

1993-11-30

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to torque

73862324, 73862326, 324209, G01L 302

Patent

active

052654800

ABSTRACT:
First and second magnetic layers are respectively fixed in two positions on a peripheral face of a rotary shaft. A magnetizing pattern is preformed at a constant pitch solely on a magnetic face of the first magnetic layer. In a preparatory step, the magnetizing pattern is copied onto a magnetic face of the second magnetic layer, so that a torque detection step is started. In the torque detection step, there is detected phase difference between reproducing signals of two magnetic heads owing to the torsional deformation of the rotary shaft caused by torque. In addition, the number of rotations for a unit time of the rotary shaft is detected based on one of the reproducing signals. Consequently, the applied torque can be obtained by calculation based on the phase difference and the number of rotations for a unit time.

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patent: 5067355 (1991-11-01), Witte
patent: 5130649 (1992-07-01), Kumagai
patent: 5200698 (1993-04-01), Thibaud

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