Force and Torque Sensing with Galfenol Alloys
Arjun Mahadevan · OhioLink ETD Center (Ohio Library and Information Network) · 2009
A.4 Second harmonic output voltage from the feedback coil at increasing sinusoidal excitation voltage at a frequency of 3 KHz, for a sinusoidal external field (H x ) of ±30 kA/m at 0.04 Hz. . . . . . . . . . . . . .A.5 Second harmonic output voltage from the feedback coil at increasing number of turns in the feedback coil, 10 V sinusoidal excitation voltage at a frequency of 3 KHz, for a sinusoidal external field (H x ) of ±30 kA/m at 0.04 Hz. . . . . . . . . . . . . . . . . . . . . . . . . .A.6 Second harmonic output voltage from the feedback coil at different excitation waveform, 10 V pp voltage at a frequency of 3 KHz, for a sinusoidal external field (H x ) of ±30 kA/m at 0.04 Hz. . . . . . . . .A.7 Spline shaft with the hot formed polycrystalline rolled Galfenol ring bonded to the shaft using M bond 200. . . . . . . . . . . . . . . . .A.8 Torque arm used to torque the spline shaft with the bonded Galfenol.A.9 Second harmonic output of the integrating fluxgate magnetometer. .A.10 Fluxgate output at different magnitudes of torque starting from a bias torque of 3300 lbs-in. . . . . . . . . . . . . . . . . . . . . . . . .A.11 Fluxgate output as a function of input torque. . . . . . . . . . . . .A.12 Fluxgate output as a function of shear strain on the rolled Galfenol ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A.13 Fluxgate output as at different torque cycle frequency.. . . . . . . .A.14 Fluxgate output as at different torque cycle frequency.. . . . . . . .