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    System and method for shared control for emergency steering
    1.
    发明授权
    System and method for shared control for emergency steering 有权

    公开(公告)号：US11685440B2

    公开(公告)日：2023-06-27

    申请号：US17034362

    申请日：2020-09-28

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Tejas M. Varunjikar ,  Mariam S. George ,  Zaki Ryne

    IPC: B62D15/02 ,  G01S13/931 ,  G01S15/931 ,  G01S17/931

    CPC classification number: B62D15/0265 ,  G01S13/931 ,  G01S15/931 ,  G01S17/931 ,  B62D15/021

    Abstract: An emergency steering system for a vehicle includes a memory including instructions that, when executed by a processor, cause the processor to: receive information corresponding to an environment external to the vehicle; identify an obstacle in the environment external to the vehicle using the information; determine a distance between the vehicle and the obstacle; determine whether a collision is imminent; in response to determining that a collision is imminent, determine whether the vehicle can move within a lane of travel to avoid the collision; in response to determining that the vehicle can move within the lane of travel to avoid the collision, determine a trajectory of travel for the vehicle; generate a steering assist angle command based on the trajectory of travel; and control position of a steering mechanism of the vehicle using the steering assist angle command and a measured steering angle.

    Model based driver torque estimation
    2.
    发明授权
    Model based driver torque estimation 有权

    公开(公告)号：US10464594B2

    公开(公告)日：2019-11-05

    申请号：US14933461

    申请日：2015-11-05

    Applicant: Steering Solutions IP Holding Corporation

    Inventor： Bo Yu ,  Anthony J. Champagne ,  Tejas M. Varunjikar ,  Timothy W. Kaufmann

    IPC: B62D15/02 ,  B62D6/10 ,  B62D5/04

    Abstract: A control system for a power steering system includes an error module that generates an error signal based on a difference of an estimated output vector and an output vector, a scaling module that calculates a feedback correction signal based on the error signal and an observer gain value, an extended state vector estimation module that determines an extended state vector estimate based on the feedback correction signal and a motor torque command, and a gain module that applies a gain to the extended state vector estimate to generate an estimated driver torque signal, the estimated driver torque signal is applied in control of the power steering system.

    Driver intent estimation without using torque sensor signal
    4.
    发明授权
    Driver intent estimation without using torque sensor signal 有权

    公开(公告)号：US10155534B2

    公开(公告)日：2018-12-18

    申请号：US15181482

    申请日：2016-06-14

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Tejas M. Varunjikar ,  Anthony J. Champagne

    IPC: B62D6/00 ,  B62D5/04

    Abstract: A system for determining driver torque includes a rack torque estimator module that determines an estimated rack torque value based on a motor angle, and a motor velocity. The system further includes a driver intent detection module that computes a disturbance torque scaling factor based on the estimated rack torque value. The system further includes a blend module that generates a motor torque assist command based on a scaled value of the estimated rack torque value using the disturbance torque scaling factor.

    PAYLOAD ESTIMATION USING ELECTRIC POWER STEERING SIGNALS
    7.
    发明申请
    PAYLOAD ESTIMATION USING ELECTRIC POWER STEERING SIGNALS 审中-公开

    公开(公告)号：US20170101127A1

    公开(公告)日：2017-04-13

    申请号：US15288265

    申请日：2016-10-07

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Tejas M. Varunjikar ,  Anthony J. Champagne

    IPC: B62D6/10 ,  B62D15/02 ,  B62D5/04

    CPC classification number: B62D5/0463 ,  B62D6/008

    Abstract: A payload estimation system and a method for estimating payload estimation using electric power steering (EPS) signals are provided. In certain embodiments, the aspects of the invention may include: receiving, by a payload detection module, multiple EPS signals to generate an additional axle load factor, determining, by a blend factor table, a load blend factor according to the additional axle load factor, generating, by a first multiplier, a blended nominal base assist signal by combining the load blend factor and a handwheel torque signal processed by a nominal base assist module, generating, by a second multiplier, a blended highload base assist signal by combining the load blend factor and the handwheel torque signal processed by a highload base assist module, and combining, by a merge module, the blended nominal base assist and the blended highload base assist to generate a motor torque command for the EPS system.

    MODEL BASED DRIVER TORQUE ESTIMATION
    8.
    发明申请
    MODEL BASED DRIVER TORQUE ESTIMATION 审中-公开
    基于模型的驾驶员扭矩估计

    公开(公告)号：US20170066473A1

    公开(公告)日：2017-03-09

    申请号：US14933461

    申请日：2015-11-05

    Applicant: Steering Solutions IP Holding Corporation

    Inventor： Bo Yu ,  Anthony J. Champagne ,  Tejas M. Varunjikar ,  Timothy W. Kaufmann

    IPC: B62D5/04 ,  B62D15/02

    CPC classification number: B62D15/025 ,  B62D5/0463 ,  B62D5/0466 ,  B62D6/10

    Abstract: A control system for a power steering system includes an error module that generates an error signal based on a difference of an estimated output vector and an output vector, a scaling module that calculates a feedback correction signal based on the error signal and an observer gain value, an extended state vector estimation module that determines an extended state vector estimate based on the feedback correction signal and a motor torque command, and a gain module that applies a gain to the extended state vector estimate to generate an estimated driver torque signal, the estimated driver torque signal is applied in control of the power steering system.

    Abstract translation: 用于动力转向系统的控制系统包括：误差模块，其基于估计的输出矢量和输出矢量的差产生误差信号;缩放模块，其基于误差信号计算反馈校正信号;以及观测器增益值 扩展状态矢量估计模块，其基于所述反馈校正信号和电动机转矩指令来确定扩展状态矢量估计;以及增益模块，对所述扩展状态矢量估计值进行增益，生成估计的驾驶员转矩信号， 驱动扭矩信号用于动力转向系统的控制。

    Phase Plane Based Transitional Damping for Electric Power Steering
    9.
    发明申请
    Phase Plane Based Transitional Damping for Electric Power Steering 有权
    电力转向基于相平面的过渡阻尼

    公开(公告)号：US20150375779A1

    公开(公告)日：2015-12-31

    申请号：US14315612

    申请日：2014-06-26

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Tejas M. Varunjikar ,  Anthony J. Champagne

    IPC: B62D6/00 ,  B62D6/10 ,  B62D5/04

    CPC classification number: B62D6/008 ,  B62D5/0463 ,  B62D5/0472 ,  B62D5/0484 ,  B62D6/10

    Abstract: A method for controlling a motor in an electrical power steering system is provided. The method generates a damping torque command for reducing an undesired torque to be generated by the motor. The method generates an assist torque command that specifies a desired torque to be generated by the motor. The method determines whether to send the damping torque command to the motor as a function of a hand wheel velocity and a hand wheel angle. The method combines the assist torque command and the damping torque command to send to the motor when it is determined that the damping torque command is to be sent to the motor.

    Abstract translation: 提供了一种用于控制电动助力转向系统中的电动机的方法。 该方法产生用于减少由马达产生的不希望的扭矩的阻尼扭矩指令。 该方法产生指定由电动机产生的期望转矩的辅助转矩指令。 该方法确定是否根据手轮速度和手轮角度将阻尼扭矩命令发送到电动机。 当确定要向电动机发送阻尼转矩指令时，该方法组合了辅助转矩指令和阻尼转矩指令以发送到电动机。

    Steering system with failsafe torque sensor communication
    10.
    发明授权
    Steering system with failsafe torque sensor communication 有权

    公开(公告)号：US11377143B2

    公开(公告)日：2022-07-05

    申请号：US16784881

    申请日：2020-02-07

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Keyur R. Patel ,  Anthony J. Champagne ,  Tejas M. Varunjikar

    IPC: B62D5/04 ,  B62D15/02 ,  B62D6/00 ,  B62D6/10

    Abstract: Technical solutions are described for providing failsafe assist torque in steering systems. An example method includes determining, by a first controller, a first assist torque signal using a first set of torque sensor signals from a first sensor and a second set of torque sensor signals from a second sensor, the first sensor corresponding to the first controller, and the second sensor corresponding to a second controller. The method further includes determining, by the second controller, a second assist torque signal using the first and second sets of torque sensor signals. Further the method includes generating, by a motor, an assist torque using the first and second assist torque signals, and in response to the first controller receiving a diagnostic signal indicating a failure of the first torque sensor, determining by the first controller, the first assist torque signal using only the second set of torque sensor signals.

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