Schaltung und Verfahren zur Bestimmung einer Winkelposition

Details

Veröffentlichungs-Nr.

EP4170287

Aktenzeichen

EP21204597

Anmeldetag

25. Oktober 2021

Veröffentlichung

16. Oktober 2024

Erteilung

16. Oktober 2024

Rechtsraum

EP

IPC

G01D5/14

Abstract

A sensor circuit for determining an angular position of a rotating object configured for generating or modulating a magnetic field, the sensor circuit comprising: a) a first sensor for providing a first sensor signal (ss1); b) a second sensor for providing a second sensor signal (ss2); c) a signal correction block for receiving the first/second sensor signal (ss1,ss2) or a signal derived therefrom as a first/second input signal (Isig, Qsig), and for receiving a plurality of feedback signals (Idc_c, Qdc_c, Gmm_c); and configured for providing a first corrected signal (ladj) and a second corrected signal (Qadj); d) an angle calculation block configured for receiving the first and the second corrected signal (ladj, Qadj), and for determining said angular position signal (Φ) as a function of a ratio of the first and the second corrected signal (ladj, Qadj); e) a feedback block configured for receiving said angular position signal (Φ), and for generating said plurality of feedback signals (Idc_c, Qdc_c, Gmm_c) based on the angular position signal (Φ), with an improved linearity.

Anmelder

Firma

Melexis Technologies SA

Land

🇨🇭 Schweiz

Fachgebiete