MAGNET CHARACTERISTIC MEASURING METHOD AND MAGNET CHARACTERISTIC MEASURING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a magnet characteristic measuring method and a magnet characteristic measuring device that can accurately measure magnetic characteristics of a magnet by removing a resonance frequency component from a detection voltage waveform.SOLUTION: A magnet characteristic measuring device uses a Helmholtz coil as a magnetization detection coil, connects a capacitor in parallel with the magnetization detection coil, stabilizes a resonance frequency component of a detection voltage waveform due to stray capacity occurring at the Helmholtz coil, then measures the detection voltage waveform of the magnetization detection coil, identifies the resonance frequency component, determines the number of moving average points, removes the resonance frequency component from the measured detection voltage waveform by using moving average processing, and obtains magnetic characteristics of the magnet using the detection voltage waveform with the resonance frequency component removed.SELECTED DRAWING: Figure 5