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    DIFFERENTIAL TRACTION DRIVE WITH STEERING AXIS COORDINATION SYSTEM AND METHOD
    1.
    发明申请
    DIFFERENTIAL TRACTION DRIVE WITH STEERING AXIS COORDINATION SYSTEM AND METHOD 审中-公开

    公开(公告)号：WO2020117640A2

    公开(公告)日：2020-06-11

    申请号：PCT/US2019/063931

    申请日：2019-12-02

    Applicant: MTD PRODUCTS INC

    Inventor： CHANG, Her-Jye ,  SMITH, Aaron ,  MAGGARD, Jay E.

    IPC: B62D5/04 ,  B62D7/04 ,  B62D9/00 ,  B62D11/00

    Abstract: A system and method for differential traction drive and steering axis coordination for an autonomous mower or other turf device includes initiating a steering motion based on determining a target forward speed and a steering rotational speed, calculating a left wheel speed and a right wheel speed, and applying the left and right wheel speeds, wherein the steering rotational speed is driven by a steering motor and the traction wheels associated with the autonomous mower, and the left and right wheel speeds are based on the target forward speed, a distance from a steering axle to the center of the respective wheel, and the steering rotational speed.

    DIFFERENTIAL TRACTION DRIVE WITH STEERING AXIS COORDINATION SYSTEM AND METHOD
    2.
    发明申请
    DIFFERENTIAL TRACTION DRIVE WITH STEERING AXIS COORDINATION SYSTEM AND METHOD 审中-公开

    公开(公告)号：WO2020117640A3

    公开(公告)日：2020-06-11

    申请号：PCT/US2019/063931

    申请日：2019-12-02

    Applicant: MTD PRODUCTS INC

    Inventor： CHANG, Her-Jye ,  SMITH, Aaron ,  MAGGARD, Jay E.

    IPC: B62D5/04 ,  B62D7/04 ,  B62D9/00 ,  B62D11/00

    Abstract: A system and method for differential traction drive and steering axis coordination for an autonomous mower or other turf device includes initiating a steering motion based on determining a target forward speed and a steering rotational speed, calculating a left wheel speed and a right wheel speed, and applying the left and right wheel speeds, wherein the steering rotational speed is driven by a steering motor and the traction wheels associated with the autonomous mower, and the left and right wheel speeds are based on the target forward speed, a distance from a steering axle to the center of the respective wheel, and the steering rotational speed.

    OPTICAL SENSOR HOUSING
    3.
    发明申请
    OPTICAL SENSOR HOUSING 审中-公开

    公开(公告)号：WO2019046681A2

    公开(公告)日：2019-03-07

    申请号：PCT/US2018/049023

    申请日：2018-08-31

    Applicant: MTD PRODUCTS INC

    Inventor： MAGGARD, Jay E. ,  GORSAGE, Gregory ,  SMITH, Aaron D.

    IPC: G02B7/02

    Abstract: An optical sensor housing includes a sensor housing body including an enclosure wall upstanding from a bottom portion and a substantially open top portion defining a cavity in which the optical sensor assembly is located, at least one aperture, and at least one engaging part projecting orthogonally from an outside surface of the sensor housing body, a sensor housing cover including an open central portion, at least one integrally molded compliant flange configured to engage the sensor housing body engaging part and to secure the sensor housing cover to the sensor housing body, and longitudinal ridges extending outwardly and disposed substantially along the length of the sensor housing cover. The sensor housing engaging parts and flanges can provide a quick-lock mechanism operable to secure the sensor housing cover to the sensor housing body without the use of tools or fasteners.

    COMPUTER IMPLEMENTED METHOD FOR TRACTION CONTROL FOR A TURF DEVICE
    5.
    发明公开
    COMPUTER IMPLEMENTED METHOD FOR TRACTION CONTROL FOR A TURF DEVICE 审中-公开

    公开(公告)号：EP4534391A2

    公开(公告)日：2025-04-09

    申请号：EP25158922.2

    申请日：2019-12-02

    Applicant: MTD Products Inc

    Inventor： CHANG, Her-Jye ,  SMITH, Aaron ,  MAGGARD, Jay E.

    IPC: B62D11/00

    Abstract: A computer implemented method for traction control for a turf device. The method comprises detecting a wheel slip event; responsive to the wheel slip event, stopping motion of the wheel and then gradually increasing a wheel speed; detecting a wheel slip event; stopping motion of the wheel; determining that a steering angle of the wheel is less than or equal to a predetermined maximum steering angle and i) adjusting the steering angle of the wheel; and ii) gradually increasing the wheel speed while the steering angle is less than or equal to a predetermined maximum steering angle.

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