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    Global positioning system bias detection and reduction
    1.
    发明授权
    Global positioning system bias detection and reduction 有权

    公开(公告)号：US12270918B2

    公开(公告)日：2025-04-08

    申请号：US17933895

    申请日：2022-09-21

    Applicant: GM Global Technology Operations LLC

    Inventor： Gui Chen ,  Shu Chen ,  Bo Yu ,  Joon Hwang ,  Carl P. Darukhanavala ,  Vivek Vijaya Kumar

    IPC: G01S19/39 ,  G01S19/40

    Abstract: A global positioning system (GPS)-bias detection and reduction system including a GPS-bias model having GPS statistical data creating a database representing data collected from a vehicle group having thousands or multiple thousands of vehicles saved in a database. At least one newly collected vehicle GPS data point is compared to the GPS statistical data to reduce negative effects of GPS-bias and to update the vehicle GPS-bias correction based on a previous GPS-bias model. A selected road node and a segment of a roadway have a map matching performed using a nearest service from a collection location of the GPS statistical data. A GPS-bias is calculated using a look-up of the database. An estimated horizontal position error (EHPE) defining a quality indicator is applied to distinguish a good quality GPS statistical data from a poor quality GPS statistical data.

    VEHICLE OSCILLATION CONTROL
    2.
    发明公开
    VEHICLE OSCILLATION CONTROL 审中-公开

    公开(公告)号：US20240359734A1

    公开(公告)日：2024-10-31

    申请号：US18308803

    申请日：2023-04-28

    Applicant: GM Global Technology Operations LLC

    Inventor： Wen-Chiao Lin ,  Bo Yu ,  Raed Nasim Abuaita

    IPC: B62D6/00 ,  B62D15/00

    CPC classification number: B62D6/008 ,  B62D15/00

    Abstract: Techniques are provided for vehicle oscillation control. In one embodiment, the techniques involve identifying an oscillation at a steering wheel or steering column of a vehicle, upon determining that the oscillation exceeds an oscillation of interest threshold, identifying the oscillation as an oscillation of interest, classifying a cause of the oscillation of interest, and mitigating the oscillation of interest based on the classification of the cause.

    METHOD AND SYSTEM OF INCONSISTENT MAP DATA RECONCILIATION IN CONNECTED VEHICLES
    4.
    发明公开
    METHOD AND SYSTEM OF INCONSISTENT MAP DATA RECONCILIATION IN CONNECTED VEHICLES 审中-公开

    公开(公告)号：US20240219201A1

    公开(公告)日：2024-07-04

    申请号：US18149427

    申请日：2023-01-03

    Applicant: GM Global Technology Operations LLC

    Inventor： Fan Bai ,  Mason David Gemar ,  Vivek Vijaya Kumar ,  Joon Hwang ,  Bo Yu

    IPC: G01C21/00 ,  G06V20/56

    CPC classification number: G01C21/3859 ,  G01C21/3841 ,  G06V20/56

    Abstract: A method and system of map data reconciliation in connected vehicles. The method includes processing information to detect a same object; determining an identification of the same object; determining a confidence level of the identification of the same object; determining a probability mass function (PMF) of the identification of the same object using Dempster-Shafer Theory; determining a most probably identification of the same object based on the PMF; and communicating the most probably identification of the same object to a vehicle to implement a vehicle function. The system includes a conflict resolution module configured to receive confidence levels from multiple vehicles detecting the same object and to determine a reconciled identification of the same object using an algorithm based on Dempster-Shafer Theory, and a weight calculation module configured to apply a weight function based on a scene context weight function and on a historical score of the vehicles.

    SYSTEM AND METHOD OF REDUCING GPS NOISE AND CORRECTING VEHICLE GPS TRAJECTORY FOR A HIGH-DEFINITION MAP
    5.
    发明公开
    SYSTEM AND METHOD OF REDUCING GPS NOISE AND CORRECTING VEHICLE GPS TRAJECTORY FOR A HIGH-DEFINITION MAP 审中-公开

    公开(公告)号：US20240125616A1

    公开(公告)日：2024-04-18

    申请号：US18045306

    申请日：2022-10-10

    Applicant: GM Global Technology Operations LLC

    Inventor： Bo Yu ,  Joon Hwang ,  Carl P. Darukhanavala ,  Shu Chen ,  Vivek Vijaya Kumar ,  Donald K. Grimm ,  Fan Bai

    IPC: G01C21/00

    CPC classification number: G01C21/3819 ,  G01C21/387 ,  G01C21/3889

    Abstract: A method of correcting a GPS vehicle trajectory of a vehicle on a roadway for a high-definition map is provided. The method comprises receiving first bitmap data from a first sensor of a first vehicle to create a plurality of first multi-layer bitmaps for the first vehicle using the first bitmap data and receiving second bitmap data from a plurality of second sensors of a plurality of second vehicles to create a plurality of second multi-layer bitmaps. The method further comprises creating first probability density bitmaps and an overall probability density bitmap with a probability density estimation, and matching an image template from each of the first probability density bitmaps with the overall probability density bitmap to define match results. The method further comprises combining the match results to define combined utility values and determining the maximal utility value with the combined utility values.

    Robust physical and virtual identity association
    6.
    发明授权
    Robust physical and virtual identity association 有权

    公开(公告)号：US11935335B2

    公开(公告)日：2024-03-19

    申请号：US17578834

    申请日：2022-01-19

    Applicant: GM Global Technology Operations LLC

    Inventor： Mohamed A. Layouni ,  Bo Yu ,  Markus Jochim

    IPC: G07C5/00 ,  B60R16/023 ,  G07C5/04 ,  H04W4/46 ,  H04W56/00 ,  H04L9/40 ,  H04W12/033

    CPC classification number: G07C5/008 ,  B60R16/023 ,  G07C5/04 ,  H04W4/46 ,  H04W56/002 ,  H04L63/0435 ,  H04W12/033

    Abstract: A system within an ego vehicle for robust association of a physical identity and a virtual identity of a target vehicle includes a data processor, including a wireless communication module and a visible light communication module, positioned within an ego vehicle, and a plurality of perception sensors, positioned within the ego vehicle and adapted to collect data related to a physical identity of the target vehicle and to communicate the data related to the physical identity of the target vehicle to the data processor via a communication bus, the data processor within the ego vehicle adapted to receive, via a wireless communication channel, data related to a virtual identity of the target vehicle, associate the physical identity of the target vehicle with the virtual identity of the target vehicle, and initiate, via the wireless communication channel and a visible light communication channel, a challenge-response protocol between the ego vehicle and the target vehicle.

    Methods to detect lateral control oscillations in vehicle behavior
    9.
    发明授权
    Methods to detect lateral control oscillations in vehicle behavior 有权

    公开(公告)号：US10988135B2

    公开(公告)日：2021-04-27

    申请号：US16202673

    申请日：2018-11-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bo Yu ,  Donald G. Wirkner ,  Heng Zhou

    IPC: B60W30/02 ,  G05D1/00

    Abstract: An exemplary method for detecting a lateral oscillation of a vehicle includes monitoring yaw rate data and lateral acceleration data of the vehicle, analyzing the yaw rate and lateral acceleration data to generate a yaw rate signal energy distribution and a lateral acceleration signal energy distribution, determining whether a series of conditions are satisfied; and if the conditions are satisfied, automatically controlling the actuator to reduce the lateral oscillation of the vehicle. In some examples, the series of conditions includes the detection of spikes in the yaw rate and lateral acceleration data at approximately the same frequency, a magnitude of the spikes exceeding a first threshold, and a phase shift between the yaw rate and lateral acceleration data exceeding a second threshold.

    Methods for steering system overload detection
    10.
    发明授权
    Methods for steering system overload detection 有权

    公开(公告)号：US10981594B2

    公开(公告)日：2021-04-20

    申请号：US16022824

    申请日：2018-06-29

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Raed N. Abuaita ,  John T Zuzelski ,  Bo Yu

    IPC: B62D5/04 ,  B62D15/02 ,  B62D1/181 ,  B62D1/183

    Abstract: An exemplary method for controlling a vehicle includes providing a vehicle steering system, the vehicle steering system including a moveable steering column assembly and a motor coupled to the steering column assembly, providing a sensor connected to the motor and configured to measure a motor characteristic, providing a controller electronically connected to the sensor and the vehicle steering system, monitoring, by the controller, sensor data received from the sensor if a trigger condition is satisfied, analyzing, by the controller, the sensor data related to the motor characteristic to determine if an overload condition is satisfied, and if the overload condition is satisfied, automatically generating, by the controller, a control signal to control the motor.

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