| 摘要 |
<p>This magnetic element control device (100, 110, 120, 130) is provided with the following: a magnetizing signal generation unit (1017) for generating an alternating signal; a magnetizing signal adjustment unit (1016) for generating an alternating voltage signal from the alternating signal and generating on the basis of the alternating voltage signal a magnetizing signal for application to a magnetizing coil (52); a detection signal comparison unit (1012) for detecting the detection signal of a positive voltage and a negative voltage generated by induced electromotive force when the current direction of the magnetization signal is switched; a feedback signal conversion unit (1014) for converting the duration between the detection signals of the positive voltage and the negative voltage to voltage information; a feedback signal adjustment unit (1013) for generating, from the voltage information, a feedback signal for producing a magnetic field that cancels a steady state magnetic field applied to the magnetic element; and a data signal conversion unit (1015) that outputs the feedback signal as a data signal representing magnetic field strength. The magnetizing signal adjustment unit (1016) convolves the feedback signal with respect to the alternating voltage signal and generates the magnetizing signal, and applies the generated magnetizing signal to the magnetizing coil (52).</p> |
