公开(公告)号：US20240227442A1

公开(公告)日：2024-07-11

申请号：US18095116

申请日：2023-01-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Maria Rossana RUIZ ,  Babak Makkinejad ,  Felipe Cuellar-Ferreira ,  Douglas James Spry

IPC: B60B35/16 ,  B60B35/00 ,  B60R16/03 ,  B62D21/02

CPC classification number: B60B35/16 ,  B60B35/004 ,  B60R16/03 ,  B62D21/02 ,  B60B2900/111 ,  B60K17/34

Abstract: A lunar rover chassis includes at least two wheels, a power supply, and at least one axle assembly coupled between the at least two wheels. The axle assembly includes an inner axle coupled with the at least two wheels, and an outer wall surrounding the inner axle. The inner axle is configured to rotate to drive rotation of the at least two wheels, the inner axle includes a first conductive surface, and the outer wall includes a second conductive surface. The power supply is electrically connected to the first conductive surface of the inner axle and the second conductive surface of the outer wall, and the power supply is configured to apply a voltage difference between the first conductive surface of the inner axle and the second conductive surface of the outer wall to attract or repel lunar regolith from the outer wall.

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.