Torque measuring device

Details Torque measuring device Torque measuring device

1989-11-20

1990-11-27

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to torque

G01L 310

Patent

active

049727281

ABSTRACT:
A device for measuring torque in a shaft without contacting the latter. A torque transmitting shaft is formed with at least one detecting magnetically anisotropic region inclined to form an angle with respect to the axis of rotation of this shaft. A detecting coil is disposed on the periphery of the detecting magnetically anisotropic region. When the detecting voltage for the detecting coil changes owing to temperature changes and time-dependent changes, the changes in the detection sensitivity and in the zero point take place, leading to errors during torque measurement. Correct measured values can be obtained by having a device for correcting such changes in sensitivity and zero point.

REFERENCES:
patent: 4414856 (1983-11-01), Winterhoff
patent: 4646576 (1987-03-01), Kita
patent: 4823620 (1989-04-01), Edo et al.

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