US 12,597,945 B2Granted

Machine learning enhanced resolver systems

AssigneeInfineon Technologies AG

InventorsMihail Jefremow, Juergen Schaefer, David Zipperstein, Arndt Voigtlaender

Life of this patent

Estimating the term…

Loading patent…

Abstract

Processing circuitry comprising an analog-to-digital converter configured to perform the techniques of this disclosure. The analog-to-digital converter may obtain, based on electrical interactions with a resolver sensor, a noisy modulated digital cosine signal (NMDCS) and a noisy modulated digital sine signal (NMDSS). The processing circuitry includes a filter configured to process the NMDCS and the NMDSS to output a filtered NMDCS and a filtered NMDSS, and a rectifier configured to process the filtered NMDCS and the filtered NMDSS to output a rectified NMDCS and a rectified NMDSS. The processing circuitry includes a digital signal processor that executes a first trained machine learning model to process the rectified NMDCS and the rectified NMDSS to obtain a demodulated DCS and a demodulated DSS, and compute, based on the demodulated DCS and the demodulated DSS, an approximate angle of the rotating element.

Claims20

Dependent claims

Processing circuitry comprising:

an analog-to-digital converter electrically coupled to a resolver sensor attached to a rotating element controlled by the processing circuitry, the analog-to-digital converter configured to obtain, based on electrical interactions with the resolver sensor, a noisy modulated digital cosine signal for an indirectly sensed angle of the rotating element and a noisy modulated digital sine signal for the indirectly sensed angle of the rotating element;
one or more filters configured to process the noisy modulated digital cosine signal and the noisy modulated digital sine signal to output a filtered noisy modulated digital cosine signal and a filtered noisy modulated digital sine signal;
one or more rectifiers configured to process the filtered noisy modulated digital cosine signal and the filtered noisy modulated digital sine signal to output a rectified noisy modulated digital cosine signal and a rectified noisy modulated digital sine signal;
and
a digital signal processor configured to:
execute a first trained machine learning model that processes the rectified noisy modulated digital cosine signal and the rectified noisy modulated digital sine signal to obtain a demodulated digital cosine signal and a demodulated digital sine signal;
and
compute, based on the demodulated digital cosine signal and the demodulated digital sine signal, an approximate angle of the rotating element.

5 more elements

A method comprising:

obtaining, by a delta-sigma analog-to-digital converter of a microcontroller, and based on electrical interactions with a resolver sensor, a noisy modulated digital cosine signal for an indirectly sensed angle of a rotating element and a noisy modulated digital sine signal for the indirectly sensed angle of the rotating element;
processing, by one or more filters of the microcontroller, the noisy modulated digital cosine signal and the noisy modulated digital sine signal to output a filtered noisy modulated digital cosine signal and a filtered noisy modulated digital sine signal;
processing, by one or more rectifiers of the microcontroller, the filtered noisy modulated digital cosine signal and the filtered noisy modulated digital sine signal to output a rectified noisy modulated digital cosine signal and a rectified noisy modulated digital sine signal;
executing, by a digital signal processor of the microcontroller, a first trained machine learning model that processes the rectified noisy modulated digital cosine signal and the rectified noisy modulated digital sine signal to obtain a demodulated digital cosine signal and a demodulated digital sine signal;
and
computing, by the digital signal processor, and based on the demodulated digital cosine signal and the demodulated digital sine signal, an approximate angle of the rotating element.

3 more elements

Dependencies are inferred from the claim text.