Torque sensor of the noncontact type

Details Torque sensor of the noncontact type Torque sensor of the noncontact type

1984-08-24

1986-12-09

Woodiel, Donald O.

Measuring and testing

Dynamometers

Responsive to torque

324209, G01L 310

Patent

active

046272984

ABSTRACT:
In a torque sensor of a noncontact type for sensing a rotary torque applied to a shaft, a magnetic ribbon of a film shape formed of a magnetic material and applied in advance with an induced magnetic anisotropy in the direction of an angle .theta. along the circumference of a shaft is bonded to the shaft along its circumference. A U-shaped first core member having end faces opposite to the ribbons is provided in the vicinity of the shaft. An exciting coil for producing a magnetic flux and a detecting coil are wound around the core member, and the magnetic flux produced by the exciting coil and introduced through the ribbon to the core member is detected by the detecting coil. When an exciting current of a predetermined frequency is supplied from an oscillator to the exciting coil to produce a magnetic flux, an output signal is generated from the detecting coil and is measured by a voltmeter.

REFERENCES:
patent: 4364278 (1982-12-01), Horter et al.
patent: 4506554 (1985-03-01), Blomkvist et al.

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