公开(公告)号：US20230286517A1

公开(公告)日：2023-09-14

申请号：US17690151

申请日：2022-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yu Cao ,  Milad Alekajbaf

IPC: B60W40/105 ,  B60W10/08 ,  B60W10/22 ,  B60W10/20 ,  B60W10/18 ,  B60W50/00 ,  B60L15/20

CPC classification number: B60W40/105 ,  B60L15/20 ,  B60W10/08 ,  B60W10/18 ,  B60W10/20 ,  B60W10/22 ,  B60W50/00 ,  B60L2240/42 ,  B60L2240/461 ,  B60W2050/0031 ,  B60W2510/10 ,  B60W2510/22 ,  B60W2520/28 ,  B60W2710/081

Abstract: Method and apparatus for wheel speed estimation include an electrical powertrain having an electric motor providing a motor speed, a wheel, and a mechanical coupling between the motor and the wheel, and an electronic control unit calculating an estimated wheel speed based on the motor speed and mechanical dynamic models of the electrical powertrain.

公开(公告)号：US12054161B2

公开(公告)日：2024-08-06

申请号：US17690151

申请日：2022-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yu Cao ,  Milad Alekajbaf

IPC: B60W40/105 ,  B60L15/20 ,  B60W10/08 ,  B60W10/18 ,  B60W10/20 ,  B60W10/22 ,  B60W50/00

CPC classification number: B60W40/105 ,  B60L15/20 ,  B60W10/08 ,  B60W10/18 ,  B60W10/20 ,  B60W10/22 ,  B60W50/00 ,  B60L2240/42 ,  B60L2240/461 ,  B60W2050/0031 ,  B60W2510/10 ,  B60W2510/22 ,  B60W2520/28 ,  B60W2710/081

Abstract: Method and apparatus for wheel speed estimation include an electrical powertrain having an electric motor providing a motor speed, a wheel, and a mechanical coupling between the motor and the wheel, and an electronic control unit calculating an estimated wheel speed based on the motor speed and mechanical dynamic models of the electrical powertrain.

公开(公告)号：US11860125B2

公开(公告)日：2024-01-02

申请号：US17317697

申请日：2021-05-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mohit Batra ,  Jasmeet Singh Ladoiye ,  Milad Alekajbaf ,  Douglas James Spry

IPC: G01N27/82 ,  B60T8/175 ,  B60T8/172 ,  B60T8/1755 ,  G06F18/25

CPC classification number: G01N27/82 ,  B60T8/172 ,  B60T8/175 ,  B60T8/17551 ,  G06F18/254

Abstract: A system for detecting wear in an encoder used to sense a wheel speed in a vehicle comprises a sensor configured to sense the wheel speed of the vehicle by sensing a magnetic material on the encoder coupled to a wheel of the vehicle. A noise detection module includes a plurality of noise detectors configured to detect noise in a wheel speed signal generated by the sensor. An estimation module is configured to estimate a state of health of the encoder based on the noise detected in the wheel speed signal and to generate an alert in response to the state of health indicating that an amount of wear on the encoder is greater than a predetermined threshold. A filter is configured to filter the noise in the wheel speed signal and to output a filtered wheel speed signal to a control system controlling stability of the vehicle.

公开(公告)号：US20220365030A1

公开(公告)日：2022-11-17

申请号：US17317697

申请日：2021-05-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mohit BATRA ,  Jasmeet Singh Ladoiye ,  Milad Alekajbaf ,  Douglas James Spry

IPC: G01N27/82 ,  B60T8/175 ,  B60T8/1755 ,  B60T8/172 ,  G06K9/62

Abstract: A system for detecting wear in an encoder used to sense a wheel speed in a vehicle comprises a sensor configured to sense the wheel speed of the vehicle by sensing a magnetic material on the encoder coupled to a wheel of the vehicle. A noise detection module includes a plurality of noise detectors configured to detect noise in a wheel speed signal generated by the sensor. An estimation module is configured to estimate a state of health of the encoder based on the noise detected in the wheel speed signal and to generate an alert in response to the state of health indicating that an amount of wear on the encoder is greater than a predetermined threshold. A filter is configured to filter the noise in the wheel speed signal and to output a filtered wheel speed signal to a control system controlling stability of the vehicle.