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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.
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公开(公告)号：US12024223B2
公开(公告)日：2024-07-02
申请号：US17038783
申请日：2020-09-30
Applicant: GM Global Technology Operations LLC
Inventor： Mohammad Amin Rajaie , Hossein Sadjadi
CPC classification number: B62D13/005 , B62D59/04 , G05D1/0223
Abstract: A method of controlling tethered self-propelled platforms is provided. The method comprises providing a platform leader and a platform follower connected to the leader with a tether to define a first heading line of the leader and a first coordinate frame of the follower. Each of the leader and the follower is pivotally moveable relative to the tether, defining a leader angle and a follower angle. The method further comprises estimating a predicted position of the leader based on a current position, a current speed, and a current yaw rate of the leader. The predicted position of the leader defines a predicted heading line of the leader. The method further comprises determining a trajectory of the follower from the first coordinate frame to the predicted heading line defining a second coordinate frame of the follower. The trajectory is based on a desired distance the predicted heading line and a desired change in yaw angle of the follower. The method further comprises moving the follower along the trajectory to the second coordinate frame.
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公开(公告)号：US20220258705A1
公开(公告)日：2022-08-18
申请号：US17174742
申请日：2021-02-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Hossein Sadjadi , Milad Jalaliyazdi
Abstract: A braking system includes brake rotors, wheel speed sensors, and an electronic control unit. The brake rotors are couplable to wheels. The brake rotors have rotor thickness variations that cause a vibration while braking. The wheel speed sensors are couplable to the wheels and configured to generate rotation signals for the wheels. The electronic control unit coupled to the wheel speed sensors and configured to generate an absolute phase offset signal that conveys an absolute phase offset angle between the rotor thickness variations in response to the rotation signals, generate a brake torque adjustment signal in response to the absolute phase offset signal and the rotation signals, and adjust a first braking control signal for a first brake rotor relative to a second braking control signal for a second brake rotor based on the brake torque adjustment signal to minimize an amplitude of the vibration during a braking event.
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公开(公告)号：US20220097765A1
公开(公告)日：2022-03-31
申请号：US17038783
申请日：2020-09-30
Applicant: GM Global Technology Operations LLC
Inventor： Mohammad Amin Rajaie , Hossein Sadjadi
Abstract: A method of controlling tethered self-propelled platforms is provided. The method comprises providing a platform leader and a platform follower connected to the leader with a tether to define a first heading line of the leader and a first coordinate frame of the follower. Each of the leader and the follower is pivotally moveable relative to the tether, defining a leader angle and a follower angle. The method further comprises estimating a predicted position of the leader based on a current position, a current speed, and a current yaw rate of the leader. The predicted position of the leader defines a predicted heading line of the leader. The method further comprises determining a trajectory of the follower from the first coordinate frame to the predicted heading line defining a second coordinate frame of the follower. The trajectory is based on a desired distance the predicted heading line and a desired change in yaw angle of the follower. The method further comprises moving the follower along the trajectory to the second coordinate frame.
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公开(公告)号：US12151664B2
公开(公告)日：2024-11-26
申请号：US17207117
申请日：2021-03-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Milad Jalaliyazdi , Graeme R. Garner , Hossein Sadjadi , Hamed Kazemi
Abstract: A system includes a brake torque request module, a brake control module, and a diagnostic module. The brake torque request module is configured to generate a brake torque request based on a brake pedal position during a braking event. The brake control module is configured to apply friction brakes on a wheelset of a vehicle to satisfy the brake torque request during the braking event. The wheelset includes less than all wheels of the vehicle. The diagnostic module is configured to detect a fault in a brake rotor on a wheel in the wheelset based on vehicle operating conditions measured during the braking event.
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Patent Agency Ranking
公开(公告)号：US11093761B2
公开(公告)日：2021-08-17
申请号：US16293837
申请日：2019-03-06
Applicant: GM Global Technology Operations LLC
Inventor： Hossein Sadjadi , Syed Ali Raza , Matthew G. Adams
Abstract: A system and method to perform lane position sensing and tracking in a vehicle include using a first camera with a first field of view of a first side of the vehicle and a second camera with a second field of view on a second side of the vehicle to capture images. The method includes determining if a first lane line on a first side of the vehicle and a second lane line on the second side of the vehicle are both visible, and based on the first lane line and the second lane line being visible, determining, a position of the vehicle in a lane between the first lane line and the second lane line and determining a trajectory of the first lane line and the second lane line and of the vehicle.
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公开(公告)号：US20200285863A1
公开(公告)日：2020-09-10
申请号：US16293837
申请日：2019-03-06
Applicant: GM Global Technology Operations LLC
Inventor： Hossein Sadjadi , Syed Ali Raza , Matthew G. Adams
Abstract: A system and method to perform lane position sensing and tracking in a vehicle include using a first camera with a first field of view of a first side of the vehicle and a second camera with a second field of view on a second side of the vehicle to capture images. The method includes determining if a first lane line on a first side of the vehicle and a second lane line on the second side of the vehicle are both visible, and based on the first lane line and the second lane line being visible, determining, a position of the vehicle in a lane between the first lane line and the second lane line and determining a trajectory of the first lane line and the second lane line and of the vehicle.
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公开(公告)号：US20200065593A1
公开(公告)日：2020-02-27
申请号：US16106351
申请日：2018-08-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Tyler J. Jamieson , Hossein Sadjadi , Arash Mohtat
Abstract: A method to automate detection of a vehicle light degradation or failure includes generating a distinct pattern to be executed by at least one vehicle light, and sending a command to a light control module operative to cause the at least one vehicle light to emit the distinct pattern. The method continues with extracting features from camera images of the distinct pattern emitted by the at least one vehicle light, and then comparing the features extracted from the camera images with features from the commanded distinct pattern to determine degradation or failure of the at least one vehicle light's state of health.
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公开(公告)号：US12275360B2
公开(公告)日：2025-04-15
申请号：US17809240
申请日：2022-06-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alaeddin Bani Milhim , Hossein Sadjadi , Hadyan Sani Ramadhan
IPC: B60R16/023 , G01R19/00 , G01R31/00 , G01R31/08 , G07C5/08
Abstract: Methods and systems are provided for monitoring ground line degradation of electric devices coupled to a communication bus. The method includes, by a processor: receiving voltage data including measurements of voltages of messages transmitted by the electric device over the communication bus, generating health indicators from the voltage data associated with ground line degradation of the electric device, the health indicators including statistical moments calculated based on the voltage data, and determining a health stage of the electric device based on the health indicators, the health stage including a classification based on a relationship between ground line degradation and communication loss for the electric device.
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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.
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