A Magnetic Balance with Hall Effect Sensors
ホール素子を用いた磁力天秤

Hideo Sawada, Tetsuya Kunimasu, Shinichi Suda, Yasushi Mizoguti, Takumi Okada
2004 JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES  
Magnetic force acting on a model fixed at the center of the JAXA 60 cm MSBS was measured with an industry manufactured balance system when MSBS control coil currents were varied. At the same time, magnetic field intensity was also measured with 11 Hall sensors, which were arranged around the MSBS test section. From relations between coil currents and its corresponding controlled magnetic forces, regressive curves were given and maximum deviation from the curves was evaluated. From relations
more » ... From relations between Hall sensor outputs and the magnetic forces, regressive curves and deviation were also obtained. Obtained results show Hall sensor outputs are much better indexes of balance than the coil currents. The maximum deviations were reduced to a half or one-third times as much as those evaluated using the control coil currents. However, when couples acting on the model are controlled, they are not effective to reduce hysteresis phenomenon in the relation. The deviation can be reduced by decreasing the range of calibration. Then, the error of the balance of the MSBS was reduced to about 1% of the calibration range. ( 586 )
doi:10.2322/jjsass.52.585 fatcat:zi7qp2rygvf7boetlexji6dmwe