G - Physics – 01 – G
Patent
G - Physics
01
G
G01G 9/00 (2006.01) G01N 33/53 (2006.01) G01N 35/00 (2006.01)
Patent
CA 2698624
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 nf H, 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).
L'invention concerne un procédé d'analyse de matériau magnétique (6) qui consiste: b) à construire (48) une signature S(H) de matériau magnétique formée à partir d'au moins deux points S(H)P, cette construction consistant à obtenir la valeur de chaque point S (H)p par mesure, pour chaque fraction de période, de l'amplitude et de la possibilité de phase d'une harmonique de champ magnétique induite dans le matériau magnétique, cette amplitude et cette phase étant obtenues uniquement en réponse à une excitation durant cette fraction de période, l'harmonique possédant une fréquence nfH, n prenant la valeur d'un nombre entier positif excepté 0; et c) à identifier (72) et/ou à déterminer (80; 90) la masse du matériau magnétique à partir de plusieurs points de la signature construite S (H).
Blake Cassels & Graydon Llp
Magnisense Technology Limited
LandOfFree
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