Patent ID: 11863108
Assignee: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A device for determining the angular position of a rotor of a rotary electric machine on the basis of signals delivered by a plurality of position sensors, the device comprising:
a circuit producing a control loop for estimating the position of the rotor, delivering at output a signal representative of the position of the rotor, and
a circuit for dynamic normalization by the amplitude of the first harmonic of each signal originating from a position sensor, this dynamic normalization circuit receiving at input:
each signal originating from a position sensor, and
at least one image of the signal representative of the position of the rotor, this image being in particular a linear combination of the cosine and the sine of an angle measured with respect to the reference position of the rotor,

this dynamic normalization circuit being configured to:
demodulate each signal originating from a position sensor by the image of the signal representative of the position of the rotor,
determine, at the end of this demodulation, the amplitude of the first harmonic of this signal originating from a position sensor, and
normalize each signal originating from a position sensor by dividing it by the amplitude of the first harmonic of said previously determined signal.