Abstract
A new structure is proposed for the magnetoelastic torque sensors using a pair of figure-eight coils as a pickup. Mutual coupling between two figure-eight coils is used as a measure of torque applied to a shaft. The mutual coupling is governed by torque-induced anisotropic permeability at the surface of the shaft. Basic characteristics of the torque sensor are examined using a tempered steel shaft of 25 mm in diameter and a pair of 25-turn figure-eight coils. Sensitivity was 16 μV/N m and hysteresis was 1.3% at the coil excitation condition of 60 kHz, 0.8 A (RMS). Exciting power needed to reduce hysteresis is much smaller with this structure than with previous methods using self-inductance as a measure of torque.
| Original language | English |
|---|---|
| Pages (from-to) | 5916-5918 |
| Number of pages | 3 |
| Journal | Journal of Applied Physics |
| Volume | 75 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Dec 1 1994 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
A new structure of torque sensors using thin pickup head - Use of mutual coupling modulation. / Sasada, Ichiro; Koga, F.
In: Journal of Applied Physics, Vol. 75, No. 10, 01.12.1994, p. 5916-5918.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A new structure of torque sensors using thin pickup head - Use of mutual coupling modulation
AU - Sasada, Ichiro
AU - Koga, F.
PY - 1994/12/1
Y1 - 1994/12/1
N2 - A new structure is proposed for the magnetoelastic torque sensors using a pair of figure-eight coils as a pickup. Mutual coupling between two figure-eight coils is used as a measure of torque applied to a shaft. The mutual coupling is governed by torque-induced anisotropic permeability at the surface of the shaft. Basic characteristics of the torque sensor are examined using a tempered steel shaft of 25 mm in diameter and a pair of 25-turn figure-eight coils. Sensitivity was 16 μV/N m and hysteresis was 1.3% at the coil excitation condition of 60 kHz, 0.8 A (RMS). Exciting power needed to reduce hysteresis is much smaller with this structure than with previous methods using self-inductance as a measure of torque.
AB - A new structure is proposed for the magnetoelastic torque sensors using a pair of figure-eight coils as a pickup. Mutual coupling between two figure-eight coils is used as a measure of torque applied to a shaft. The mutual coupling is governed by torque-induced anisotropic permeability at the surface of the shaft. Basic characteristics of the torque sensor are examined using a tempered steel shaft of 25 mm in diameter and a pair of 25-turn figure-eight coils. Sensitivity was 16 μV/N m and hysteresis was 1.3% at the coil excitation condition of 60 kHz, 0.8 A (RMS). Exciting power needed to reduce hysteresis is much smaller with this structure than with previous methods using self-inductance as a measure of torque.
UR - http://www.scopus.com/inward/record.url?scp=5244372493&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=5244372493&partnerID=8YFLogxK
U2 - 10.1063/1.355511
DO - 10.1063/1.355511
M3 - Article
AN - SCOPUS:5244372493
VL - 75
SP - 5916
EP - 5918
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 10
ER -