公开(公告)号：US12215973B2

公开(公告)日：2025-02-04

申请号：US17406496

申请日：2021-08-19

Applicant: Infineon Technologies AG

Inventor： Benjamin Kollmitzer ,  Wolfgang Granig ,  Udo Hafner ,  Manuel Gillinger

IPC: G01B7/30 ,  G01D5/14 ,  G01D5/16 ,  G01D5/244 ,  G01D5/245 ,  G01D18/00 ,  G01R33/07 ,  G01R33/09

Abstract: A magnetic-field-based angle sensor system includes a stator component and a rotor component rotatable relative thereto, a magnetic field sensor operating in saturation operation and a magnetic field sensor operating in linear operation, wherein the magnetic field sensor operating in saturation operation is configured to determine a rotation angle of the rotor component relative to the stator component, and wherein the magnetic field sensor operating in linear operation is configured to ascertain an external magnetic stray field acting on the angle sensor system. The angle sensor system further includes a control device configured, based on the ascertained external magnetic stray field, to compensate for a stray-field-dependent measurement deviation in the determination of the rotation angle carried out.

公开(公告)号：US11550001B2

公开(公告)日：2023-01-10

申请号：US16788704

申请日：2020-02-12

Applicant: Infineon Technologies AG

Inventor： Dirk Hammerschmidt ,  Udo Hafner ,  Benjamin Kollmitzer

IPC: G01R33/00 ,  G01B7/30 ,  G06F11/00

Abstract: An autocalibration method includes generating at least one sensor signal in response to measuring a physical quantity; compensating the at least one sensor signal based on at least one compensation parameter to generate at least one compensated sensor signal; generating the at least one compensation parameter based on the at least one sensor signal or the at least one compensated sensor signal; comparing each of the at least one compensation parameter to a respective tolerance range; on a condition that each of the at least one compensation parameter is within its respective tolerance range, transmitting the at least one compensation parameter as at least one validated compensation parameter to be used for compensating the at least one sensor signal; and on a condition that at least one of the at least one compensation parameter is not within its respective tolerance range, generating a fault detection signal.