Measuring and testing – Dynamometers – Responsive to torque
Patent
1988-09-19
1989-10-17
Orsino, Joseph A.
Measuring and testing
Dynamometers
Responsive to torque
G01L 310
Patent
active
048738743
ABSTRACT:
A magnetoelastic torque transducer comprises a shaft, three stationary coils connected in series to magnetize the shaft and three coils to sense moment transmitted in the shaft, and a magnetic casing surrounding the coils. The shaft has three parallel annular zones provided with such anisotropy that the magnetic field in the shaft is deflected by an angle .alpha. relative to a generatrix to the shaft in the outer zones and is deflected by an angle .alpha. to a generatrix to the shaft in the middle zone, the axial extension of both outer zones being substantially half that of the intermediate zone. The angle .alpha. should be at least 45.degree. in order to obtain good sensitivity in the transducer. The excitation coils are arranged concentrically to the shaft, each being located outside an annular zone and the outer excitation coils being wound with substantially half as many turns as the central excitation coil. Concentric with each excitation coil is a measuring coil, the outer measuring coils being wound with substantially half as many turns as the central measuring coil and this being arranged to be inverse-connected to the outer measuring coils.
REFERENCES:
patent: 3465581 (1969-09-01), Hohenberg
patent: 4506554 (1983-06-01), Blomkvist
patent: 4541289 (1985-09-01), Valdemarsson
Yamesaci et al., "Torque Sensors Using Wire Explosion Magnetostrictive Alloy Layers", IEEE Transactions on Magnetics; vol. 2, MAG-22, No. 5, Sep. 1986.
K. Harada et al. "A New Torque Transducer Using Stress Sensitive Amorphous Ribbons", IEEE Transactions on Magnetics; vol. MAG-18, No. 6, p.1767, Nov. 1982.
I. Sasada et al., "Torque Transducers With Stress-Sensitive Amorphous Ribbons of Chevron Pattern", IEEE Transactions on Magnetics; vol. MAG-20, No. 5, p. 961, Sep. 1984.
Asea Brown Boveri AB
Chen Hollis T.
Orsino Joseph A.
LandOfFree
Magnetoelastic torque transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetoelastic torque transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetoelastic torque transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1737843