公开(公告)号：US20190023314A1

公开(公告)日：2019-01-24

申请号：US15653022

申请日：2017-07-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Coburn C. Bland, III ,  Bo Yu ,  Adam J. Kloess ,  Scott P. Sherman ,  Ibrahim A. Badiru

IPC: B62D5/04 ,  B62D6/00

CPC classification number: B62D5/0481 ,  B62D5/0457 ,  B62D5/0463 ,  B62D6/00

Abstract: A power steering assembly includes a steering unit and a motor. A controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of self-diagnosis for the assembly. If a plurality of enabling conditions is met, the steering unit is caused to rotate through a plurality of angles from an original position, via a command to the motor. The steering unit is caused to rotate first in a forward direction up to a predefined maximum angle, second in a reverse direction up to a negative of the predefined maximum angle and third in the forward direction back to the original position. The controller is configured to obtain motor torque data characterizing torque of the motor at the plurality of angles. The assembly is controlled based at least partially on the motor torque data and predetermined baseline data.

公开(公告)号：US11820426B2

公开(公告)日：2023-11-21

申请号：US17084113

申请日：2020-10-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alexander J. Dan ,  Brian N. Siskoy ,  Adam J. Kloess

IPC: B62D15/02 ,  B60W30/10

CPC classification number: B62D15/025 ,  B60W30/10

Abstract: A method of controlling a vehicle includes determining a first projected path of the vehicle, receiving sensor data corresponding to a steering input, determining a first blended vehicle path resulting from a first blended steering command based on the first projected path and the sensor data, and determining when the first blended vehicle path satisfies a first criteria. When the controller determines that the first blended vehicle path satisfies the first criteria, the controller relinquishes control of the vehicle to an operator and when the controller determines that the first blended vehicle path does not satisfy the first criteria, the controller generates a second blended vehicle path resulting from a second blended steering command based on the first projected path and the sensor data.

公开(公告)号：US11084526B2

公开(公告)日：2021-08-10

申请号：US15988444

申请日：2018-05-24

Applicant: GM Global Technology Operations LLC

Inventor： Bo Yu ,  Ian Y. Hwa ,  Adam J. Kloess ,  Yu Cao

IPC: B62D5/04 ,  G06F17/14 ,  B62D15/02 ,  B62D5/00 ,  B62D6/00

Abstract: A system and method for passively and actively monitoring and determining the location of at least one mechanical anomaly for a power steering system of a vehicle is disclosed. The system includes one or more processors and a memory coupled to the processors. The memory stores a baseline waveform and data comprising program code that, when executed by the one or more processors, causes the system to receive at least one excitation signal and at least one response signal. The power steering system creates the response signal in response to receiving the excitation signal. In response to receiving the excitation signal and the response signal, the system is caused to estimate the frequency response between the excitation signal and the response signal based on a fast Fourier transform (FFT) algorithm. The frequency response is represented by an estimated waveform.

公开(公告)号：US20220135128A1

公开(公告)日：2022-05-05

申请号：US17084113

申请日：2020-10-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alexander J. Dan ,  Brian N. Siskoy ,  Adam J. Kloess

IPC: B62D15/02 ,  B60W30/10

Abstract: A method of controlling a vehicle includes determining a first projected path of the vehicle, receiving sensor data corresponding to a steering input, determining a first blended vehicle path resulting from a first blended steering command based on the first projected path and the sensor data, and determining when the first blended vehicle path satisfies a first criteria. When the controller determines that the first blended vehicle path satisfies the first criteria, the controller relinquishes control of the vehicle to an operator and when the controller determines that the first blended vehicle path does not satisfy the first criteria, the controller generates a second blended vehicle path resulting from a second blended steering command based on the first projected path and the sensor data.

公开(公告)号：US10427711B2

公开(公告)日：2019-10-01

申请号：US15653022

申请日：2017-07-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Coburn C. Bland, III ,  Bo Yu ,  Adam J. Kloess ,  Scott P. Sherman ,  Ibrahim A. Badiru

IPC: B62D5/04 ,  B62D6/00

Abstract: A power steering assembly includes a steering unit and a motor. A controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of self-diagnosis for the assembly. If a plurality of enabling conditions is met, the steering unit is caused to rotate through a plurality of angles from an original position, via a command to the motor. The steering unit is caused to rotate first in a forward direction up to a predefined maximum angle, second in a reverse direction up to a negative of the predefined maximum angle and third in the forward direction back to the original position. The controller is configured to obtain motor torque data characterizing torque of the motor at the plurality of angles. The assembly is controlled based at least partially on the motor torque data and predetermined baseline data.