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    Disturbance feedforward compensation for position control in steering systems
    11.
    发明授权
    Disturbance feedforward compensation for position control in steering systems 有权

    公开(公告)号：US11180186B2

    公开(公告)日：2021-11-23

    申请号：US16376116

    申请日：2019-04-05

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Prerit Pramod ,  Kai Zheng ,  Mariam Swetha George ,  Tejas M. Varunjikar

    IPC: B62D5/04

    Abstract: Technical solutions are described for disturbance feedforward compensation technique for improving the disturbance rejection properties of a closed loop position control system. According to one or more embodiments, a steering system includes a position controller that generates a torque command based on an input rack-position command and a measured position command. Further, a disturbance estimator that estimates a rack force acting on a rack, and an adder generates an adjusted torque command by adding the rack force that is estimated into the torque command. The steering system further includes an actuator that positions the rack according to the adjusted torque command.

    Vehicle safety system
    12.
    发明授权
    Vehicle safety system 有权

    公开(公告)号：US11173897B2

    公开(公告)日：2021-11-16

    申请号：US15977852

    申请日：2018-05-11

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Zaki Ryne ,  Jian Sheng ,  Tejas M. Varunjikar ,  Farhad Bolourchi

    IPC: B60W30/09 ,  B60W30/095 ,  B60W30/18 ,  B60W50/14 ,  B60W10/20

    Abstract: A vehicle safety system includes a controller in communication with at least one of an imaging system and a ranging system. At least one of the imaging system and the ranging system being arranged to monitor a distance and a speed of a forward vehicle and at least one of an incoming vehicle and a vehicle relative to a host vehicle. The controller is programmed to output for display a time left to pass the forward vehicle based on the distance and the speed of the forward vehicle and the incoming vehicle, responsive to indicia of an impending host vehicle maneuver.

    SYSTEMS AND METHODS FOR OBSTACLE PROXIMITY DETECTION
    14.
    发明申请
    SYSTEMS AND METHODS FOR OBSTACLE PROXIMITY DETECTION 有权

    公开(公告)号：US20210263518A1

    公开(公告)日：2021-08-26

    申请号：US16796012

    申请日：2020-02-20

    Applicant: Steering Solutions IP Holding Corporation

    Inventor： Jian Sheng ,  Tejas M. Varunjikar ,  Zaki Ryne

    IPC: G05D1/02 ,  G01S13/86 ,  B62D6/00 ,  B60R11/04 ,  B60R21/0134 ,  G06K9/00

    Abstract: Embodiments for assisting steering of a vehicle responsive to detecting an object in a proximity of a vehicle are described. Embodiments described include: receiving an image of a lane indicator corresponding to a lane of travel of the vehicle from an image capturing device; determining, based on the image, reference values corresponding to a position of the lane indicator relative to the vehicle; associating each of the reference values to values used to locate a point within a reference frame related to a direction the vehicle is traveling; receiving position information of an object in an environment external to the vehicle from a radar sensor; determining, based on the values and the position information, an assigned lane of the object; detecting an impending change of the lane of travel of the vehicle to the assigned lane of the object; generating a steering control value based on the impending change.

    STEERING SYSTEM WITH FAILSAFE TORQUE SENSOR COMMUNICATION
    15.
    发明申请
    STEERING SYSTEM WITH FAILSAFE TORQUE SENSOR COMMUNICATION 审中-公开

    公开(公告)号：US20200172157A1

    公开(公告)日：2020-06-04

    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.

    Phase plane based transitional damping for electric power steering
    18.
    发明授权
    Phase plane based transitional damping for electric power steering 有权
    电动助力转向相平面过渡阻尼

    公开(公告)号：US09540040B2

    公开(公告)日：2017-01-10

    申请号：US14315612

    申请日：2014-06-26

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Tejas M. Varunjikar ,  Anthony J. Champagne

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

    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。

    Rack force estimation for steering systems
    19.
    发明授权
    Rack force estimation for steering systems 有权

    公开(公告)号：US12054204B2

    公开(公告)日：2024-08-06

    申请号：US16033579

    申请日：2018-07-12

    Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

    Inventor： Rangarajan Ramanujam ,  Bhuvanesh Sainath ,  Tejas M. Varunjikar ,  Prerit Pramod

    IPC: B62D5/04

    CPC classification number: B62D5/0463 ,  B62D5/0409 ,  B62D5/0481

    Abstract: According to one or more embodiments of the technical solutions described herein, a method for generating torque in a steering system includes computing, by a controller, a lateral velocity of a vehicle using a vehicle model that uses a vehicle velocity, a surface friction estimate, a tire-angle, and at least one of a measured yaw rate from a yaw rate sensor and a lateral acceleration. The method further includes generating, by the controller, a torque command for providing assist torque to a driver, the torque command is based on the lateral velocity that is computed. The method further includes providing, by a motor, the assist torque, which is an amount of torque corresponding to the torque command.

    SYSTEM AND METHOD FOR SHARED CONTROL FOR EMERGENCY STEERING
    20.
    发明申请
    SYSTEM AND METHOD FOR SHARED CONTROL FOR EMERGENCY STEERING 有权

    公开(公告)号：US20210107567A1

    公开(公告)日：2021-04-15

    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 ,  G01S17/931 ,  G01S15/931

    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.

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