公开(公告)号：US12124242B2

公开(公告)日：2024-10-22

申请号：US17994529

申请日：2022-11-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xuejuan Kong ,  Zhen Fang ,  Lihua Liu

IPC: G05B19/4155 ,  G01B7/30 ,  G01D5/20 ,  G01R31/34

CPC classification number: G05B19/4155 ,  G01B7/30 ,  G01D5/20 ,  G01R31/343 ,  G05B2219/41329

Abstract: A motor angle detection and diagnosis apparatus is connected to a drive motor using a resolver. The resolver is configured to output a resolver feedback signal of an electrical angle of the drive motor. An angle sampling and diagnosis system in the motor angle detection and diagnosis apparatus performs two-channel simultaneous sampling on a resolver feedback signal, obtained after adjustment by the resolver feedback processing circuit, separately calculates a first electrical angle and a second electrical angle; diagnoses data obtained after the two-channel sampling of the first electrical angle and the second electrical angle in real time, diagnoses hardware circuits, and controls the motor controller to enter a safe state when a diagnosis result is abnormal. In this solution, sampling is performed by using two sampling channels, so that angle decoding of at least an ASIL C can be implemented.

公开(公告)号：US20230085935A1

公开(公告)日：2023-03-23

申请号：US17994529

申请日：2022-11-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xuejuan Kong ,  Zhen Fang ,  Lihua Liu

IPC: G05B19/4155 ,  G01R31/34 ,  G01D5/20 ,  G01B7/30

Abstract: A motor angle detection and diagnosis apparatus is connected to a drive motor using a resolver. The resolver is configured to output a resolver feedback signal of an electrical angle of the drive motor. An angle sampling and diagnosis system in the motor angle detection and diagnosis apparatus performs two-channel simultaneous sampling on a resolver feedback signal, obtained after adjustment by the resolver feedback processing circuit, separately calculates a first electrical angle and a second electrical angle; diagnoses data obtained after the two-channel sampling of the first electrical angle and the second electrical angle in real time, diagnoses hardware circuits, and controls the motor controller to enter a safe state when a diagnosis result is abnormal. In this solution, sampling is performed by using two sampling channels, so that angle decoding of at least an ASIL C can be implemented.