| 摘要 |
This method of analysing a magnetic material (6) includes : b) the construction (48) of a signature S(H) of the magnetic material formed from at least two points S(H)P, this construction including obtaining the value of each point S (H)p by measuring, over each period fraction, the amplitude and possibly the phase of a harmonic of the magnetic field induced in the magnetic material, said amplitude and phase being obtained in response only to an excitation during this period fraction, the harmonic having a frequency nfH, where n is a non-zero positive integer; and c) the identification (72) and/or the determination (80; 90) of the mass of the magnetic material from several points of the constructed signature S (H).
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