Minimal structure magnetostrictive stress and torque sensor

Details Minimal structure magnetostrictive stress and torque sensor Minimal structure magnetostrictive stress and torque sensor

1990-05-02

1992-09-08

Razavi, Michael

Measuring and testing

Dynamometers

Responsive to torque

73DIG2, G01L 302

Patent

active

051448467

ABSTRACT:
A noncontacting method for sensing stress and torque based on the principle of magnetostriction comprises inducing a magnetic flux in a shaft (20) via such means as a single core/coil(58/60) placed close to the shaft (20) which detects torque by means of voltage or current changes in the coil (60). Another embodiment comprises two single core/coils (58/60 and 59/61) and signal processing circuitry which produces a signal minimally affected by material property inhomogeneities. An additional embodiment employs a plurality of sensors (66A/66B) strategically located around the shaft (20) to eliminate spurious signals which are due to bending stress and shaft misalignment.

REFERENCES:
patent: 2053560 (1936-09-01), Janovsky
patent: 2081748 (1937-05-01), Janovsky
patent: 2269584 (1942-01-01), Eldredge
patent: 4011758 (1977-03-01), Reenstra et al.
patent: 4414856 (1983-11-01), Winterhoff
patent: 4566338 (1986-01-01), Fleming et al.
patent: 4590807 (1986-05-01), Kobayashi et al.
patent: 4627298 (1986-12-01), Sahashi et al.
patent: 4697460 (1987-10-01), Sugiyama et al.
patent: 4750371 (1988-06-01), Kobayashi et al.
patent: 4780671 (1988-10-01), Hase et al.
patent: 4887461 (1989-12-01), Sugimoto et al.
Fleming, W. J., SAE Paper #890482, "Magnetostrictive Torque Sensors-Derivation of Transducer Model" Feb. 1989.

Affiliated with

Also associated with

Rating

Minimal structure magnetostrictive stress and torque sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Minimal structure magnetostrictive stress and torque sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Minimal structure magnetostrictive stress and torque sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-127629