CPC G01R 31/389 (2019.01) [G01R 31/367 (2019.01)] | 11 Claims |
1. A method for determining an impedance of an electrical or electrochemical component with correction of a synchronization error, the method comprising:
choosing an impedance model for the component, which has a resistance and an inductance;
applying an excitation signal with a first frequency and a second frequency;
measuring a response signal, which is beset by the synchronization error relative to the excitation signal;
determining a first impedance at the first frequency and a second impedance at the second frequency from the excitation signal and the response signal;
determining the synchronization error as a value for which a deviation between a difference between the second impedance and the first impedance and a corresponding value of an impedance difference that is calculated for an equivalent circuit diagram falls below a predetermined threshold value in respect of at least one impedance component; and
correcting values of the first impedance and the second impedance using the synchronization error.
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