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    STEERING SYSTEM FOR AN AUTONOMOUSLY DRIVEN VEHICLE AND METHODS OF STEERING THE SAME
    1.
    发明申请
    STEERING SYSTEM FOR AN AUTONOMOUSLY DRIVEN VEHICLE AND METHODS OF STEERING THE SAME 审中-公开
    自动驾驶车辆的转向系统及其转向方法

    公开(公告)号：US20140214256A1

    公开(公告)日：2014-07-31

    申请号：US13750408

    申请日：2013-01-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Kenneth L. Rosol ,  David M. Sidlosky ,  Robert W. Leschuk ,  Eric L. Raphael ,  Scott R. Kloess ,  Yat-Chung Tang ,  John T. Zuzelski

    IPC: G05D1/02

    CPC classification number: G05D1/021 ,  B62D9/005

    Abstract: A steering system for an autonomously driven vehicle and methods of steering the vehicle are disclosed. A brake device is operable in a first phase to brake the vehicle when a power steering controller is in a first mode and operable in a second phase to steer the vehicle when the power steering controller is in a second mode. A main controller is in communication with a friction device to signal the friction device to actuate to a disengaged position when the power steering controller is in the first mode and the brake device is in the first phase, and signal the friction device to actuate to an engaged position to secure a steering wheel in an initial position when the power steering controller is in the second mode and the brake device is in the second phase to allow the brake device to steer the vehicle.

    Abstract translation: 公开了一种用于自主驾驶车辆的转向系统和转向车辆的方法。 当动力转向控制器处于第一模式时，制动装置可在第一阶段中操作以制动车辆，并且当动力转向控制器处于第二模式时可在第二阶段中操作以转向车辆。 当动力转向控制器处于第一模式并且制动装置处于第一阶段时，主控制器与摩擦装置通信以指示摩擦装置致动到脱离位置，并且将摩擦装置发信号通到一个 当动力转向控制器处于第二模式并且制动装置处于第二阶段以允许制动装置转向车辆时，将方向盘固定在初始位置。

    ESTIMATING STABILITY MARGINS IN A STEER-BY-WIRE SYSTEM
    4.
    发明申请
    ESTIMATING STABILITY MARGINS IN A STEER-BY-WIRE SYSTEM 审中-公开

    公开(公告)号：US20190118855A1

    公开(公告)日：2019-04-25

    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: B62D5/04 ,  G05B15/02

    CPC classification number: B62D5/0481 ,  B62D5/001 ,  B62D5/0457 ,  B62D5/0472 ,  G05B15/02

    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.

    Estimating stability margins in a steer-by-wire system
    5.
    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.

    System and method for monitoring a state of charge of a battery
    6.
    发明授权
    System and method for monitoring a state of charge of a battery 有权

    公开(公告)号：US10173613B2

    公开(公告)日：2019-01-08

    申请号：US14829313

    申请日：2015-08-18

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Scott R. Kloess ,  John T. Zuzelski

    IPC: G01R31/30 ,  B60R16/033 ,  G01R31/36 ,  H02J7/00 ,  B62D5/04

    Abstract: Systems and methods for monitoring the state of charge of a battery of a vehicle are provided. A battery monitor having a processor and a memory is configured to monitor an operating voltage and a loaded voltage of the battery. An electric power steering system is configured to be supplied with power from the battery. The battery monitor is configured to calculate a voltage drop between the operating voltage and the loaded voltage when the battery is under load from the electric power steering system. The battery monitor compares the voltage drop to a predetermined voltage drop and determines that the state of charge of the battery is low when the voltage drop is greater than or equal to the predetermined voltage drop. The battery monitor instructs the electric power steering system to operate in a limited state when the state of charge of the battery is low.

    Steering system for an autonomously driven vehicle and methods of steering the same
    8.
    发明授权
    Steering system for an autonomously driven vehicle and methods of steering the same 有权
    用于自主驾驶车辆的转向系统及其转向方法

    公开(公告)号：US08886412B2

    公开(公告)日：2014-11-11

    申请号：US13826122

    申请日：2013-03-14

    Applicant: GM Global Technology Operations LLC

    Inventor： Kenneth L. Rosol ,  David M. Sidlosky ,  Robert W. Leschuk ,  Scott R. Kloess ,  John T. Zuzelski ,  Eric L. Raphael ,  Yat-Chung Tang ,  Stephen Pastor

    IPC: B62D5/04 ,  B62D5/30 ,  B62D6/00 ,  B60W10/20 ,  B62D5/00 ,  B62D7/14

    CPC classification number: B62D6/00 ,  B60W10/20 ,  B62D1/28 ,  B62D1/286 ,  B62D5/003 ,  B62D5/30 ,  B62D7/148 ,  B62D7/159

    Abstract: A steering system for an autonomously driven vehicle and methods of steering the vehicle are disclosed. A main controller signals a secondary steering assembly to operate in a first phase when a power steering controller is in a first mode and a second phase to steer the vehicle when the power steering controller is in a second mode. The main controller signals a friction device to actuate to a disengaged position when the power steering controller is in the first mode and the secondary steering assembly is in the first phase, and to signal the friction device to actuate to an engaged position to secure a steering wheel in an initial position when the power steering controller is in the second mode and the secondary steering assembly is in the second phase to allow the secondary steering assembly to steer the vehicle.

    Abstract translation: 公开了一种用于自主驾驶车辆的转向系统和转向车辆的方法。 当动力转向控制器处于第一模式时，主控制器指示次级转向组件在第一阶段中操作，而当动力转向控制器处于第二模式时，主控制器指示第二阶段来转向车辆。 当动力转向控制器处于第一模式并且次级转向组件处于第一阶段时，主控制器用信号通知摩擦装置致动到脱离位置，并且向摩擦装置发出信号以致动到接合位置以固定转向 当动力转向控制器处于第二模式并且次级转向组件处于第二阶段以允许辅助转向组件转向车辆时，车轮处于初始位置。

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