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    SYSTEM FOR FUSING TWO OR MORE VERSIONS OF MAP DATA
    83.
    发明申请
    SYSTEM FOR FUSING TWO OR MORE VERSIONS OF MAP DATA 有权

    公开(公告)号：US20240385010A1

    公开(公告)日：2024-11-21

    申请号：US18318247

    申请日：2023-05-16

    Applicant: GM Global Technology Operations LLC

    Inventor： Gui Chen ,  Bo Yu ,  Shuqing Zeng ,  Fan Bai ,  Joon Hwang ,  Vivek Vijaya Kumar ,  Mason David Gemar ,  Carl P. Darukhanavala

    IPC: G01C21/00

    Abstract: A system for fusing two or more versions of map data together includes one or more central computers that receive road network data representing a road network for a predefined geofenced area. The central computers compute a plurality of points that are each positioned at a predetermined distance from one another. The central computers create a plurality of bounding boxes for the road network based on the plurality of points and create a set of closest matched map data points for each bounding box that is part of the road network by executing a map-matching registration algorithm to align the two or more versions of map data with one another. The central computers execute a maximum likelihood estimation algorithm to determine probability distribution parameters of the set of closest matched map data points compared to the ground truth map data.

    SYSTEM FOR ADDING LANDMARK POINTS TO A HIGH DEFINITION MAP AND ENHANCING LONGITUDINAL LOCALIZATION
    85.
    发明公开
    SYSTEM FOR ADDING LANDMARK POINTS TO A HIGH DEFINITION MAP AND ENHANCING LONGITUDINAL LOCALIZATION 审中-公开

    公开(公告)号：US20240302179A1

    公开(公告)日：2024-09-12

    申请号：US18181038

    申请日：2023-03-09

    Applicant: GM Global Technology Operations LLC

    Inventor： Brent Navin Roger Bacchus ,  Guangyu Zou ,  Bo Yu

    IPC: G01C21/00

    CPC classification number: G01C21/3811 ,  G01C21/3819 ,  G01C21/3848 ,  G01C21/3881

    Abstract: A map updating system for a vehicle includes one or more input devices. The input device generates an input signal associated with data indicative of multiple landmark points relative to multiple road semantic features. The system further includes a computer having one or more processors that receive the input signal. The computer further includes a non-transitory computer readable storage medium for storing instructions. The processor is programmed to build a local map including the road semantic features and the landmark points. The processor is further programmed to determine a radius of road curvature associated with each road semantic feature and compare the radius of road curvature to a maximum radius of curvature threshold. The processor is further programmed to transmit an update signal to a cloud server, in response the processor determining that the radius of road curvature is less than the maximum radius of curvature threshold.

    LANE LINE MAP CONSTRUCTION USING PROBABILITY DENSITY BITMAPS
    88.
    发明公开
    LANE LINE MAP CONSTRUCTION USING PROBABILITY DENSITY BITMAPS 审中-公开

    公开(公告)号：US20240068836A1

    公开(公告)日：2024-02-29

    申请号：US17821898

    申请日：2022-08-24

    Applicant: GM Global Technology Operations LLC

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

    IPC: G01C21/00

    CPC classification number: G01C21/3822 ,  G01C21/3841 ,  G01C21/3878

    Abstract: A method includes receiving sensor data from a plurality of sensors of a plurality of vehicles. The sensor data includes vehicle GPS data and sensed lane line data of the roadway. The method further includes creating a plurality of multi-layer bitmaps for each of the plurality of vehicles using the sensor data, fusing the plurality of the multi-layer bitmaps of each of the plurality of vehicles to create a fused multi-layer bitmap, creating a plurality of multi-layer probability density bitmaps using the fused multi-layer bitmap, extracting lane line data from the plurality of multi-layer probability density bitmaps, and creating the high-definition (HD) map of the roadway using the multi-layer probability density bitmaps and the lane line data extracted from the plurality of multi-layer probability density bitmaps.

    Method and system for active roll control
    89.
    发明授权
    Method and system for active roll control 有权

    公开(公告)号：US11865891B2

    公开(公告)日：2024-01-09

    申请号：US17085637

    申请日：2020-10-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Robert G. Izak ,  Nojan Medinei ,  Larry G. Gepfrey ,  Bo Yu

    IPC: B60G21/055

    CPC classification number: B60G21/0553 ,  B60G2400/104 ,  B60G2400/204 ,  B60G2400/25 ,  B60G2400/40 ,  B60G2400/80

    Abstract: A system for active roll control for a vehicle body is provided and includes a sensor operable to monitor a tilt of the body and a suspension system. The suspension system includes an active sway bar including a first bar portion, a second bar portion, and an active roll control motor disposed between the first bar portion and the second bar portion. The active roll control motor is operable to turn the first bar portion in relation to the second bar portion. The system further includes a computerized active roll control controller which is operative to monitor a driving mode including one of straight-line driving and rounding a curve on a road, monitor an output of the sensor, determine a desired roll moment based upon the driving mode and the output of the sensor, and control the active roll control motor based upon the desired roll moment.

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