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    NON-LINEAR STIFFNESS ACTUATOR FOR VEHICLE SUSPENSION
    1.
    发明申请
    NON-LINEAR STIFFNESS ACTUATOR FOR VEHICLE SUSPENSION 审中-公开

    公开(公告)号：US20190118604A1

    公开(公告)日：2019-04-25

    申请号：US15790595

    申请日：2017-10-23

    Applicant: GM Global Technology Operations LLC

    Inventor： Vladimir Suplin ,  Avshalom Suissa ,  Klaus Trangbaek

    IPC: B60G17/015 ,  B60G17/06 ,  B60G15/04

    CPC classification number: B60G17/0152 ,  B60G15/04 ,  B60G17/06 ,  B60G2202/12 ,  B60G2202/135 ,  B60G2202/25 ,  B60G2500/10 ,  F16F1/00

    Abstract: A non-linear stiffness actuator for a suspension corner employed in a vehicle includes an actuator housing and an actuator shaft configured to transmit an actuator force to the road wheel. The actuator also includes a primary elastic member assembly arranged between the actuator housing and the actuator shaft and configured to exert a primary elastic member force along the actuator shaft. The actuator additionally includes a secondary elastic member assembly configured to exert a variable secondary elastic member force acting between the actuator housing and the actuator shaft. The variable secondary elastic member force is configured to selectively contribute to and subtract from the primary elastic member force to thereby facilitate the non-linear stiffness of the actuator. A vehicle having such a non-linear stiffness actuator is also provided.

    Lifting mechanism using negative stiffness
    2.
    发明授权
    Lifting mechanism using negative stiffness 有权

    公开(公告)号：US10081403B2

    公开(公告)日：2018-09-25

    申请号：US15225081

    申请日：2016-08-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Avshalom Suissa ,  Mario Jodorkovsky

    IPC: B62D65/18 ,  F16M11/04 ,  F16M11/18

    CPC classification number: B62D65/18 ,  B66F7/0616

    Abstract: A lifting mechanism includes a load bearing structure, and a carrier. The carrier is configured for supporting a load. The carrier is moveable relative to the load bearing structure in a substantially vertical direction relative to a ground surface, along a vertical axis. A load carrying spring applies a spring force that biases the carrier relative to the load bearing structure in a direction along the vertical axis. A negative stiffness device interconnects the carrier and the load bearing structure. The negative stiffness device applies a device force that biases the carrier relative to the load bearing structure in a direction along the vertical axis. The device force opposes the spring force. The device force includes a magnitude that is substantially equal to the spring force in any of a plurality of different positions of the carrier relative to the load bearing structure along the vertical axis.

    SPRING MODULE WITH NEGATIVE AND POSITIVE STIFFNESS SPRINGS
    3.
    发明申请
    SPRING MODULE WITH NEGATIVE AND POSITIVE STIFFNESS SPRINGS 审中-公开

    公开(公告)号：US20180229568A1

    公开(公告)日：2018-08-16

    申请号：US15433277

    申请日：2017-02-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Avshalom Suissa ,  Vladimir Suplin

    IPC: B60G15/06

    CPC classification number: B60G15/065 ,  B60G11/00 ,  B60G2200/144 ,  B60G2202/10 ,  B60G2202/31 ,  F16F1/00

    Abstract: A strut assembly for a suspension corner employed in a vehicle having a vehicle body and a road wheel includes a damper. The strut assembly also includes an elastic unit having at least one spring module acting in concert with the damper to suspend the vehicle body relative to the road wheel. Each spring module has a positive stiffness spring arranged in parallel with a negative stiffness spring. A vehicle that has a suspension corner employing the elastic unit and is configured to maintain contact between the road wheel and the road surface and provide isolation of vibration between the road wheel and the vehicle body is also contemplated.

    Detection of active-material overheat conditions without temperature sensor
    4.
    发明授权
    Detection of active-material overheat conditions without temperature sensor 有权
    检测没有温度传感器的活性物质过热条件

    公开(公告)号：US09052243B2

    公开(公告)日：2015-06-09

    申请号：US13895461

    申请日：2013-05-16

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Avshalom Suissa

    IPC: G01K5/52 ,  H02H5/04

    CPC classification number: G01K5/52 ,  G01K5/483 ,  H02H5/042

    Abstract: A system, for use in protecting an active-material actuator from overheating without using a temperature sensor. The system includes an active material being transformable between a first state and a second state in response to a pre-determined stimulus, and being pre-tensioned to at least a pre-determined threshold, yielding the pre-tensioned active material. The system also includes a processing unit configured to perform operations comprising obtaining a value for electrical resistance of the pre-tensioned active material, estimating, based on the electrical resistance obtained, an strain value for the active material, yielding an estimated strain value, and obtaining an actual strain value for the active material. The operations also include determining a difference between the estimated strain value estimated and the actual strain value and determining, based on the difference determined, whether an overheating condition exists for the active material.

    Abstract translation: 一种用于在不使用温度传感器的情况下保护活性材料致动器免于过热的系统。 该系统包括响应于预先确定的刺激而在第一状态和第二状态之间可转换并且被预张紧至至少预定阈值的活性材料，产生预张紧的活性材料。 该系统还包括处理单元，其被配置为执行包括获得预拉伸的活性材料的电阻值的操作，基于获得的电阻估计活性材料的应变值，产生估计的应变值，以及 获得活性物质的实际应变值。 所述操作还包括确定估计的应变值估计值与实际应变值之间的差值，并且基于确定的差异确定活性材料是否存在过热状况。

    LIMITING SYSTEM FOR CONSTRAINING THE COMMANDED STEERING ANGLE OF A STEERING SYSTEM
    7.
    发明申请
    LIMITING SYSTEM FOR CONSTRAINING THE COMMANDED STEERING ANGLE OF A STEERING SYSTEM 有权

    公开(公告)号：US20220379955A1

    公开(公告)日：2022-12-01

    申请号：US17335538

    申请日：2021-06-01

    Applicant: GM Global Technology Operations LLC

    Inventor： Avshalom Suissa ,  Audrey Devin Porter

    IPC: B62D6/00 ,  B62D6/02

    Abstract: A limiting system for constraining a commanded steering angle for a vehicle including an electric power steering (EPS) system includes a controller in electronic communication with at least one other system of the vehicle. The controller executes instructions to receive a plurality of trajectory planning inputs that are each expressed as an array including a plurality of values, where the plurality of trajectory planning inputs includes a trajectory velocity array, a trajectory acceleration array, and a trajectory curvature array. The controller also executes instructions to determine a maximum rate of steering angle change based on the corresponding ideal rate of change of the commanded steering angle and the maximum rate change allowed by the EPS system.

    VEHICLE CONTROL SYSTEMS AND METHODS
    9.
    发明申请
    VEHICLE CONTROL SYSTEMS AND METHODS 有权

    公开(公告)号：US20220119008A1

    公开(公告)日：2022-04-21

    申请号：US17072169

    申请日：2020-10-16

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Avshalom Suissa

    IPC: B60W60/00 ,  B60W40/109 ,  B60W40/114 ,  B60W10/20 ,  G01C21/34 ,  B60W30/02 ,  B60W10/184 ,  B60W10/04

    Abstract: Methods and system for vehicle control. The methods and systems determining actuator commands data based on a vehicle stability and motion control function. The vehicle stability and motion control function having planned trajectory data, current vehicle position data and current vehicle heading data as inputs, having the actuator commands data as an output and utilizing a model predicting vehicle motion including predicting vehicle heading data and predicting vehicle position data. The actuator commands data includes steering and propulsion commands. The actuator commands data includes differential braking commands for each brake of the vehicle to correct for any differential between the planned vehicle heading and the current vehicle heading data or the predicted vehicle heading data. The methods and systems output the actuator commands data to the actuator system.

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