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    Steer ratio synchronization for steer-by-wire systems
    1.
    发明授权
    Steer ratio synchronization for steer-by-wire systems 有权

    公开(公告)号：US11447175B2

    公开(公告)日：2022-09-20

    申请号：US16888838

    申请日：2020-05-31

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Steven J. Collier-Hallman

    IPC: B62D6/00 ,  B62D5/04

    Abstract: A method for a steer by wire steering system. The method includes determining a difference between a commanded steering ratio and an achieved steering ratio and determining whether the difference between the commanded steering ratio and the achieved steering ratio is greater than a threshold. The method also includes, in response to a determination that the difference between the commanded steering ratio and the achieved steering ratio is greater than the threshold, adjusting the commanded steering ratio to be equal to the achieved steering ratio. The method also includes, in response to a determination that the difference between the commanded steering ratio and the achieved steering ratio is greater than the threshold, selectively adjusting a bandwidth of a filter based on at least one vehicle characteristic of an associated vehicle and adjusting, using the filter, the commanded steering ratio to be equal to a desired steering ratio.

    SYSTEMS AND METHODS FOR DISTRIBUTED WINDING PASSIVE DAMPING IN A STEER BY WIRE HANDWHEEL ACTUATOR
    2.
    发明公开
    SYSTEMS AND METHODS FOR DISTRIBUTED WINDING PASSIVE DAMPING IN A STEER BY WIRE HANDWHEEL ACTUATOR 审中-公开

    公开(公告)号：US20240286669A1

    公开(公告)日：2024-08-29

    申请号：US18588649

    申请日：2024-02-27

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Anik Chowdhury ,  Michael J. Bock ,  Shuvajit Das ,  Steven J. Collier-Hallman

    IPC: B62D5/00

    CPC classification number: B62D5/005

    Abstract: A method for passive damping in a steer-by-wire handwheel actuator includes selecting a number of windings for a motor of a handwheel actuator; shorting a subset of windings of the number of windings, each winding of the subset of windings being disposed at an obtuse angle from each other winding of the subset of windings; determining a resistance value for the motor; selectively adjusting the resistance value based on a number of windings associated with the subset of windings; and providing, in series with the subset of windings, at least one metal-oxide-semiconductor field-effect transistor (MOSFET) configured to: vary the resistance associated with the subset of windings based on a vehicle speed; and tune a damping characteristic associated with the handwheel actuator.

    Generation of a current reference to control a brushless motor
    7.
    发明授权
    Generation of a current reference to control a brushless motor 有权
    生成电流参考以控制无刷电机

    公开(公告)号：US09531311B2

    公开(公告)日：2016-12-27

    申请号：US14090484

    申请日：2013-11-26

    Applicant: Steering Solutions IP Holding Corporation

    Inventor： Steven J. Collier-Hallman

    IPC: H02P7/06 ,  B62D5/04

    CPC classification number: H02P7/06 ,  B62D5/046 ,  B62D5/0463 ,  B62D5/0481 ,  H02P21/22

    Abstract: A current reference generator to control a brushless motor in a motor control system is provided. The current reference generator includes a locate peak torque module that determines a maximum possible torque and a direct axis current that corresponds to the maximum possible torque based on motor parameters, a maximum voltage, a motor velocity of the brushless motor, and a sign of a torque command. A limit torque command module limits the torque command to the maximum possible torque. A locate minimum current module determines a value of the direct axis current that results in a minimum motor current. A solve current reference module generates a reference vector that satisfies the torque command as limited by the direct axis current that corresponds to the maximum possible torque and the direct axis current that results in the minimum motor current.

    Abstract translation: 提供了用于控制电动机控制系统中的无刷电动机的电流基准发电机。 电流参考发生器包括定位峰值扭矩模块，该定位峰值扭矩模块基于电动机参数，最大电压，无刷电动机的电动机速度和一个符号，确定最大可能的转矩和对应于最大可能转矩的直接轴电流 扭矩指令。 极限转矩指令模块将转矩指令限制到最大可能的转矩。 定位最小电流模块确定导致最小电动机电流的直轴电流的值。 解决电流参考模块生成满足转矩指令的参考矢量，该转矩指令受直流轴电流限制，直流轴电流对应于导致最小电动机电流的最大可能转矩和直轴电流。

    MOTOR POSITION FILTER FOR ESTIMATION OF VELOCITY USING MOVING LINEAR REGRESSION
    8.
    发明申请
    MOTOR POSITION FILTER FOR ESTIMATION OF VELOCITY USING MOVING LINEAR REGRESSION 审中-公开
    使用移动线性回归估计速度的电机位置滤波器

    公开(公告)号：US20150025837A1

    公开(公告)日：2015-01-22

    申请号：US14335098

    申请日：2014-07-18

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Steven J. Collier-Hallman

    IPC: B62D5/04 ,  G01P3/00

    CPC classification number: B62D5/0481 ,  B62D5/049 ,  G01P3/64 ,  H03M1/1265

    Abstract: A method of estimating a motor velocity in an electric power steering system that includes a motor is provided. The method generates motor position data by sampling an original motor position signal at an irregular sampling rate. The method estimates a motor velocity by performing a regression analysis on the motor position data.

    Abstract translation: 提供了一种在包括电动机的电动助力转向系统中估计电动机速度的方法。 该方法通过以不规则的采样率采样原始的电动机位置信号来产生电动机位置数据。 该方法通过对电动机位置数据进行回归分析来估计电动机速度。

    Motor position sensing system for rotating electric machines
    9.
    发明授权
    Motor position sensing system for rotating electric machines 有权

    公开(公告)号：US12149131B2

    公开(公告)日：2024-11-19

    申请号：US17750597

    申请日：2022-05-23

    Applicant: Steering Solutions IP Holding Corporation

    Inventor： Mojtaba Bahrami Kouhshahi ,  Mohammed (Rakib) Islam ,  Jeffrey T. Klass ,  Steven J. Collier-Hallman ,  Md. Zakirul Islam

    IPC: H02K11/215 ,  H02K7/00 ,  H02K29/08

    Abstract: An electric machine includes a rotor structure disposed within a motor housing, wherein a second rotor end has a plurality of axially stacked laminations. The electric machine further includes a motor position sensor system which includes a first plurality of cutouts defined in the plurality of axially stacked laminations, wherein the first plurality of cutouts have a progressively smaller cross-sectional area at each lamination. The motor position sensor system also includes a second plurality of cutouts defined in the plurality of axially stacked laminations, wherein the second plurality of cutouts have a progressively smaller cross-sectional area at each lamination. The motor position sensor system further includes a plurality of motor sensors axially spaced from the second rotor end, and a plurality of sensor magnets axially spaced from the second rotor end and the plurality of motor sensors.

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