Compensation for temperature variation in magnetostrictive torque sensor using perpendicularly magnetizing coils
- Nagoya Univ. (Japan)
A robust torque sensor with rapid response was constructed by forming magnetostrictive layers and mounting coils on a carbon steel shaft. A sensitive and reliable Fe[sub 40]Ni[sub 56]Cr[sub 4] magnetostrictive layer was formed using a low-pressure plasma spray method. A magnetic field perpendicular to the magnetostrictive layer plane is generated by a current flowing through the twin coils to magnetize the steel shaft in the radial direction (the hard axis direction). Linear characteristics of the sensor output with respect to the applied torque (between [minus]40 and +40 N-m) were obtained using the twin coils at exciting frequencies of up to 600 kHz. Variations in the sensor output at zero stress and in the sensitivity to temperature variations of the steel shaft were compensated using newly constructed non-inductive coils to detect the temperature of the [lambda]-layer.
- OSTI ID:
- 5607049
- Journal Information:
- IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States) Vol. 8:4; ISSN 0882-4959; ISSN ITJJER
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
ALLOYS
CHROMIUM ALLOYS
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
IRON ALLOYS
MACHINE PARTS
MAGNETIC FIELDS
MAGNETORESISTANCE
MEASURING INSTRUMENTS
MONITORS
MOTION
NICKEL ALLOYS
NICKEL BASE ALLOYS
PHYSICAL PROPERTIES
ROTATION
SHAFTS
TEMPERATURE DEPENDENCE
TORQUE