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    Method to prioritize transmission of sensed objects for cooperative sensor sharing
    11.
    发明授权
    Method to prioritize transmission of sensed objects for cooperative sensor sharing 有权

    公开(公告)号：US10741070B1

    公开(公告)日：2020-08-11

    申请号：US16291732

    申请日：2019-03-04

    Applicant: GM Global Technology Operations LLC

    Inventor： Vivek Vijaya Kumar ,  Hariharan Krishnan ,  Bo Yu

    IPC: G08G1/16 ,  G08G1/0967 ,  G06K9/00

    Abstract: A method to control a host vehicle includes: detecting, by a controller of the host vehicle, objects, wherein detecting objects includes receiving remote-object data, the remote-object data includes class data and location data, the objects include remote vehicles and remote infrastructure; assigning, by the controller, an object class to each of the detected objects based on the class data; assigning, by the controller, a priority value to each of the detected objects based on the object class of each of the detected objects; and assigning, by the controller, a transmission time interval (TTI) to the CSMs based on the priority value to modify the TTI of each of the CSMs in accordance with the assigned TTI; and transmitting the CSMs to the remote vehicles.

    INTELLIGENT VEHICLE NAVIGATION SYSTEMS, METHODS, AND CONTROL LOGIC FOR DERIVING ROAD SEGMENT SPEED LIMITS
    13.
    发明申请
    INTELLIGENT VEHICLE NAVIGATION SYSTEMS, METHODS, AND CONTROL LOGIC FOR DERIVING ROAD SEGMENT SPEED LIMITS 审中-公开

    公开(公告)号：US20200050209A1

    公开(公告)日：2020-02-13

    申请号：US16142680

    申请日：2018-09-26

    Applicant: GM Global Technology Operations LLC

    Inventor： Fan Bai ,  Shu Chen ,  Donald K. Grimm ,  David E. Bojanowski ,  Bo Yu ,  Jinzhu Chen

    IPC: G05D1/02 ,  G01C21/34 ,  G05D1/00 ,  B60W30/14

    Abstract: Presented are systems and methods for deriving speed limits of designated road segments by mining large-scale vehicle data traces. A method for controlling operation of a motor vehicle includes: determining a current location of the vehicle; determining a designated road segment corresponding to the vehicle's location; receiving host speed data indicative of the vehicle's speed while travelling on the road segment for a calibrated timeframe; receiving crowd-sourced speed data indicative of the speeds of participatory vehicles while travelling on the road segment for the calibrated timeframe; accumulating a speed distribution function for the road segment based on the host and crowd-sourced speed data; generating a finite mixture model from the speed distribution function to estimate a speed limit range; selecting a speed limit candidate from the estimated speed limit range; and transmitting command signals to a vehicle subsystem to execute a control operation based on the selected speed limit candidate.

    Estimating stability margins in a steer-by-wire system
    14.
    发明授权
    Estimating stability margins in a steer-by-wire system 有权

    公开(公告)号：US10518801B2

    公开(公告)日：2019-12-31

    申请号：US15787883

    申请日：2017-10-19

    Applicant: GM Global Technology Operations LLC

    Inventor： Bo Yu ,  Ibrahim A. Badiru ,  Scott R. Kloess

    IPC: G01M17/00 ,  B62D5/04 ,  G05B15/02 ,  B62D5/00

    Abstract: Examples of techniques for estimating stability margins in a steer-by-wire system are disclosed. In one example implementation, a method for open-loop steer-by-wire (SbW) system linearization includes linearizing, by a processing device, an open-loop SbW system at different operating points. The method further includes determining, by the processing device, an open-loop transfer function of the op en-loop SbW system. The method further includes estimating, by the processing device, margins of stability for the open-loop SbW system. The method further includes implementing the margins of stability into a vehicle to reduce instability in a steering system of the vehicle.

    RACK DISTURBANCE TEST FOR DETERMINING THE FREQUENCY RESPONSE OF AN ELECTRIC POWER STEERING SYSTEM
    15.
    发明申请
    RACK DISTURBANCE TEST FOR DETERMINING THE FREQUENCY RESPONSE OF AN ELECTRIC POWER STEERING SYSTEM 审中-公开

    公开(公告)号：US20190383707A1

    公开(公告)日：2019-12-19

    申请号：US16008677

    申请日：2018-06-14

    Applicant: GM Global Technology Operations LLC

    Inventor： Bo Yu ,  Ian Y. Hwa

    IPC: G01M17/06 ,  G01L5/22 ,  B62D5/04 ,  B62D15/02

    Abstract: A system and method for determining a frequency response of a power steering system is disclosed including a steering assist motor configured to generate an assist torque about an axis of a steering shaft when activated. The method includes monitoring, by a controller, a torque transducer that measures a steering output torque of the steering shaft experienced during a first frequency sweep and a second frequency sweep. The method also includes determining, by the controller, a transfer function based on the steering output torque monitored during the first frequency sweep and the second frequency sweep, where the transfer function indicates the response by the power steering system.

    Method of self-diagnosis for power steering assembly
    16.
    发明授权
    Method of self-diagnosis for power steering assembly 有权

    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.

    System and method for compensating for delay and jitter
    18.
    发明授权
    System and method for compensating for delay and jitter 有权
    用于补偿延迟和抖动的系统和方法

    公开(公告)号：US09246970B2

    公开(公告)日：2016-01-26

    申请号：US14180489

    申请日：2014-02-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Fan Bai ,  Bo Yu ,  Lakshmi V. Thanayankizil ,  Robert A. Hrabak ,  David P. Pop

    IPC: G06F15/16 ,  H04L29/06 ,  H04L12/841 ,  H04L12/70

    CPC classification number: H04L65/602 ,  H04L47/283 ,  H04L65/80 ,  H04L2012/5646 ,  H04L2012/5649 ,  H04W4/00

    Abstract: Methods and systems for compensating for delay or jitter are provided. The methods, for example, may include, but are not limited to receiving, by a processor, one or more data streams from one or more electronic devices, transmitting, by the processor, the one or more data streams to one or more displays, determining, by the processor, delay and jitter in the one or more data streams transmitted by the processor, and requesting, by the processor, at least one of the one or more electronic devices to adjust a respective data stream via a communication system.

    Abstract translation: 提供了补偿延迟或抖动的方法和系统。 该方法例如可以包括但不限于由处理器接收来自一个或多个电子设备的一个或多个数据流，由处理器将一个或多个数据流发送到一个或多个显示器， 由所述处理器确定所述处理器发送的所述一个或多个数据流中的延迟和抖动，并且由所述处理器请求所述一个或多个电子设备中的至少一个以经由通信系统来调整相应的数据流。

    SYSTEM FOR FUSING TWO OR MORE VERSIONS OF MAP DATA BASED ON SPATIAL KALMAN FILTERING
    19.
    发明申请
    SYSTEM FOR FUSING TWO OR MORE VERSIONS OF MAP DATA BASED ON SPATIAL KALMAN FILTERING 有权

    公开(公告)号：US20250102320A1

    公开(公告)日：2025-03-27

    申请号：US18473607

    申请日：2023-09-25

    Applicant: GM Global Technology Operations LLC

    Inventor： Shuqing Zeng ,  Fan Bai ,  Bo Yu ,  Gui Chen ,  Cem U. Saraydar ,  Mason David Gemar

    IPC: G01C21/00 ,  G01C21/32

    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 receive road network data that includes a discrete random curve that represents lane markings. The discrete random curve includes a plurality of state vectors that are each defined by a respective location and tangent angle. The central computers estimate the position for the state vectors of the discrete random curve based on a signed distance and the tangent angle by minimizing a spatial Kalman filter cost function and execute a Kalman smoothening function to estimate the position and the tangent angle for the state vectors that are part of the discrete random curve, where the state vectors each represent a map point of the fused map data.

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