Vorrichtung zur Drehwinkelerfassung

Details

Veröffentlichungs-Nr.

EP2477004

Aktenzeichen

EP12150153

Anmeldetag

4. Januar 2012

Veröffentlichung

4. März 2015

Erteilung

4. März 2015

Rechtsraum

EP

IPC

G01D5/14

Abstract

Three magnetic sensors are arranged around a rotor at predetermined angular intervals about the rotation axis of the rotor. Sinusoidal signals that have a phase difference of a predetermined degree of 45° are output from the respective magnetic sensors. A rotation angle computing device detects a magnetic pole transition in a first output signal as follows. Specifically, the rotation angle computing device detects a magnetic pole transition in the first output signal based on a value having a larger absolute value between a current value of the second sinusoidal signal and a current value of the third sinusoidal signal, an immediately preceding value of the first sinusoidal signal and a current value of the first sinusoidal signal.

Anmelder

Firma

JTEKT Corporation

Land

🇯🇵 Japan

Fachgebiete