公开(公告)号：US20240410786A1

公开(公告)日：2024-12-12

申请号：US18331447

申请日：2023-06-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ehsan Jafarzadeh ,  Hossein Sadjadi ,  Paola Scarassatti Sant Anna ,  Dezhi Li ,  Sara Sadat Rahimifard ,  Yu Cao

IPC: G01M13/045 ,  F16C19/52

Abstract: Vehicles and systems and methods for health monitoring drive unit bearings in vehicles are provided. A system for health monitoring a drive unit bearing in a vehicle includes a sensor mounted to a drive unit of the vehicle and configured to provide a vibration signal; and a processor configured to: pre-process the vibration signal from the sensor to enhance a fault signature and form a frequency domain signal; and process the frequency domain signal to estimate a health stage of the drive unit bearing.

公开(公告)号：US20240402317A1

公开(公告)日：2024-12-05

申请号：US18329131

申请日：2023-06-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hossein Sadjadi ,  Ehsan Jafarzadeh ,  Zachary T. Kroeze

IPC: G01S7/497 ,  B60W50/02 ,  B60W50/029 ,  G01S17/931

Abstract: Systems and methods are provided for controlling a vehicle. In one embodiment, a method includes: receiving, by the controller, return data generated by a lidar device of the vehicle; determining, by the controller, at least one overlapping channel of redundant return data; determining, by the controller, an optimization framework of equations based on modeled errors of the at least one overlapping channel; solving, by the controller, the optimization framework using a least squares method to determine an error value; determining, by the controller, a state of health of the lidar device based on the error value; compensating, by the controller, the return data from the lidar device based on the error value; and controlling, by the controller, the vehicle based on the compensated return data.