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11 条记录 (耗时 0.014 秒)

    SYSTEM AND METHOD FOR DETERMINING OPERATIONAL READINESS OF A BACKUP HYDRAULIC PUMP SYSTEM
    4.
    发明申请
    SYSTEM AND METHOD FOR DETERMINING OPERATIONAL READINESS OF A BACKUP HYDRAULIC PUMP SYSTEM 有权

    公开(公告)号：US20220136498A1

    公开(公告)日：2022-05-05

    申请号：US17084843

    申请日：2020-10-30

    申请人： Deere & Company

    发明人： Michael S. Ramsey ,  Michael A. Holland ,  Nathanael K. Rehn ,  Jacob M. Kongs ,  Jordan Tagtow

    IPC分类号： F04B49/06 ,  F04D15/02 ,  F04D15/00

    摘要： A system and technique for determining functionality of a hydraulic system including first and second motors mutually coupled in driving relation with a pump, a sensor generating a signal representative of a monitored condition, and a controller configured to selectively control activation and deactivation of the motors. Fitness detection logic stored in memory of the controller is executable by a processor to: determine, based on the signal while the first motor is activated and second motor is deactivated during a first test interval, whether the monitored condition meets a predefined threshold prior to expiration of the first test interval; determine, based on the signal while the second motor is activated and first motor is deactivated during a second test interval, whether the monitored condition meets the predefined threshold prior to expiration of the second test interval; and generate a readiness signal representative of the determined functionality of the hydraulic system.

    OPERATOR SELECTABLE STEERING MODE WITH VARIABLE TORQUE FEEDBACK AND SYSTEM THEREOF
    5.
    发明申请
    OPERATOR SELECTABLE STEERING MODE WITH VARIABLE TORQUE FEEDBACK AND SYSTEM THEREOF 有权

    公开(公告)号：US20220063581A1

    公开(公告)日：2022-03-03

    申请号：US17004143

    申请日：2020-08-27

    申请人： DEERE & COMPANY

    发明人： Nathanael K. Rehn ,  Jeffrey M. Tott ,  Trent L. Goodnight

    IPC分类号： B60W10/20 ,  B60W50/10 ,  B60W40/105 ,  B60W40/109 ,  B62D5/00 ,  B62D5/09

    摘要： A method of controlling a work machine having at least one wheel includes providing a controller, an operator control, and a steering system including a steering wheel position sensor, a road wheel angle sensor, a speed sensor, and a feedback device. The method includes detecting a change in steering wheel position via the steering wheel position device and a wheel speed of the at least one wheel via the speed sensor. A predicted lateral acceleration is calculated by the controller as a function of wheel speed and a feedback torque is determined by the controller as a function of the predicted lateral acceleration. The feedback torque is determined from a plurality of feedback torque curves stored by the controller, where each of the plurality of feedback torque curves corresponds to a sensitivity level selectable from the operator control. The feedback torque is commanded to the feedback device.

    Operator selectable steering mode with variable torque feedback and system thereof
    8.
    发明授权
    Operator selectable steering mode with variable torque feedback and system thereof 有权

    公开(公告)号：US11541862B2

    公开(公告)日：2023-01-03

    申请号：US17004143

    申请日：2020-08-27

    申请人： DEERE & COMPANY

    发明人： Nathanael K. Rehn ,  Jeffrey M. Tott ,  Trent L. Goodnight

    IPC分类号： B60W30/045 ,  B60W30/18 ,  B60W40/107 ,  B62D5/00 ,  B62D6/00 ,  G05B15/02 ,  B60W10/20 ,  B60W50/10 ,  B62D5/09 ,  B60W40/109 ,  B60W40/105

    摘要： A method of controlling a work machine having at least one wheel includes providing a controller, an operator control, and a steering system including a steering wheel position sensor, a road wheel angle sensor, a speed sensor, and a feedback device. The method includes detecting a change in steering wheel position via the steering wheel position device and a wheel speed of the at least one wheel via the speed sensor. A predicted lateral acceleration is calculated by the controller as a function of wheel speed and a feedback torque is determined by the controller as a function of the predicted lateral acceleration. The feedback torque is determined from a plurality of feedback torque curves stored by the controller, where each of the plurality of feedback torque curves corresponds to a sensitivity level selectable from the operator control. The feedback torque is commanded to the feedback device.