Method of characterizing an electrical system by impedance...

G - Physics – 01 – R

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G01R 31/36 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2753366

The invention relates to a method of more precisely characterizing an electrical system by impedance spectroscopy. Said method consists in: applying an input signal comprising a sequence of sinusoidal perturbations to said electrical system, so as to scan a main series (A) of frequencies; measuring an output signal of said electrical system in response to said input signal for each of said applied perturbations; and estimating a characteristic quantity of the impedance of said electrical system for each of said applied perturbations, characterized in that the perturbations of said sequence are applied so as to scan in turn a plurality of subseries (A1,..., An) of frequencies obtained from said main series (A), each subseries of said plurality being interlaced with at least one other subseries of the same plurality.

L'invention concerne un procédé de caractérisation plus précise d'un système électrique par spectroscopie d'impédance. Ledit procédé consiste à: appliquer audit système électrique un signal d'entrée comportant une séquence de perturbations sinusoïdales, de manière à balayer une suite principale (A) de fréquences; - mesurer un signal de sortie dudit système électrique en réponse audit signal d'entrée pour chacune desdites perturbations appliquées; et estimer une grandeur caractéristique de l'impédance dudit système électrique pour chacune desdites perturbations appliquées; caractérisé en ce que les perturbations de ladite séquence sont appliquées de manière à balayer tour à tour une pluralité de sous-suites (A1,...., A n) de fréquences issues de ladite suite principale (A), chaque sous-suite de ladite pluralité étant entrelacée avec au moins une autre sous-suite de la même pluralité.

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