HYDRAULIC STEERING SYSTEM
    133.
    发明公开

    公开(公告)号:EP4197885A1

    公开(公告)日:2023-06-21

    申请号:EP21214597.3

    申请日:2021-12-15

    Abstract: A hydraulic steering system (1) is described. The hydraulic steering system (1) comprises a steering motor (2) and a joystick (3) having a housing (4), a handle (5) mounted movably to the housing (4), a handle angle sensor (6) and return to center means (7) producing a restoring force on the handle (5).
    Such a system should help an operator to steer a vehicle in a safe manner.
    To this and the return to center means (7) comprises an input (8) for a parameter of a vehicle to be steered and produces a variable restoring force depending on a signal at the input and/or of an angle of the handle (5).

    VEHICLE STEERING CONTROL SYSTEMS AND METHODS
    135.
    发明公开

    公开(公告)号:EP3835175A2

    公开(公告)日:2021-06-16

    申请号:EP21155307.8

    申请日:2019-10-17

    Abstract: According to the present disclosure, a system for providing steering control in a dual path machine includes a propulsion controller operatively connected to plants of the machine for driving ground contacting elements, the propulsion controller being configured to control steering of the dual path machine through drive signals sent to the plants, and a brake controller operatively connected to left and right brakes of the machine, the brake controller being configured to control steering of the machine by providing differential brake pressures to the left and right brakes. The system of the present disclosure provides redundant steering control by receiving an input signal at the brake controller with an indication of steering position, receiving an input signal at the brake controller with an indication of brake position, and providing a differential brake pressure to brakes of the dual path machine based on the steering input signal and brake input signal.

    VEHICLE STEERING CONTROL SYSTEMS AND METHODS
    136.
    发明公开

    公开(公告)号:EP3656650A3

    公开(公告)日:2020-08-05

    申请号:EP19203725.7

    申请日:2019-10-17

    Abstract: According to the present disclosure, a system for providing steering control in a dual path machine (10) includes a propulsion controller (26) operatively connected to plants (22, 24) of the machine for driving ground contacting elements, the propulsion controller being configured to control steering of the dual path machine through drive signals sent to the plants, and a brake controller (32) operatively connected to left and right brakes (28, 30) of the machine, the brake controller being configured to control steering of the machine by providing differential brake pressures to the left and right brakes. The system of the present disclosure provides redundant steering control by receiving an input signal at the brake controller with an indication of steering position, receiving an input signal at the brake controller with an indication of brake position, and providing a differential brake pressure to brakes of the dual path machine based on the steering input signal and brake input signal.

    VEHICLE STEERING CONTROL SYSTEMS AND METHODS
    137.
    发明公开

    公开(公告)号:EP3656650A2

    公开(公告)日:2020-05-27

    申请号:EP19203725.7

    申请日:2019-10-17

    Abstract: According to the present disclosure, a system for providing steering control in a dual path machine (10) includes a propulsion controller (26) operatively connected to plants (22, 24) of the machine for driving ground contacting elements, the propulsion controller being configured to control steering of the dual path machine through drive signals sent to the plants, and a brake controller (32) operatively connected to left and right brakes (28, 30) of the machine, the brake controller being configured to control steering of the machine by providing differential brake pressures to the left and right brakes. The system of the present disclosure provides redundant steering control by receiving an input signal at the brake controller with an indication of steering position, receiving an input signal at the brake controller with an indication of brake position, and providing a differential brake pressure to brakes of the dual path machine based on the steering input signal and brake input signal.

    VEHICLE STEERING CONTROL SYSTEMS AND METHODS
    138.
    发明公开

    公开(公告)号:EP3620353A1

    公开(公告)日:2020-03-11

    申请号:EP19193527.9

    申请日:2019-08-26

    Abstract: According to the present disclosure, a steering system and method for a machine (10) include a vehicle control system (12) configured to command steering of the machine (10), and a steering sensor (24) in communication with the vehicle control system (12). The steering sensor (24) is configured to detect a position of a steering actuator (22) of the machine (10). The vehicle control system (12) is configured to detect an acceleration rate of the machine (10) and to command steering of the machine (10) based at least in part on the position of the steering actuator (22) and the acceleration rate of the machine (10).

    HIGH AMBIENT TEMPERATURE PROPULSION SPEED CONTROL OF A SELF-PROPELLED AGRICULTURAL PRODUCT APPLICATOR

    公开(公告)号:EP3517806A1

    公开(公告)日:2019-07-31

    申请号:EP18210237.6

    申请日:2018-12-04

    Abstract: A system (30), apparatus and method are provided for limiting operating speed at high temperatures of a self-propelled, agricultural product applicator (10) having a hydraulic drive system (28) including a pump (32) supplying pressurized hydraulic fluid to a variable-displacement hydraulic motor (12, 14, 16, 18) operatively connected for propelling the applicator (10). A temperature sensor (38) detects a temperature of the pressurized hydraulic fluid in the hydraulic system (28). A propel controller (40) is operatively connected between the temperature sensor (38) and the propulsion motor (12, 14, 16, 18) and configured for limiting displacement of the propulsion motor (12, 14, 16, 18) according to one or more predetermined de-rated conditions resulting in reduced motor speed, in accordance with a predetermined schedule, when predetermined motor de-rating activation temperature limits of the hydraulic fluid are detected by the temperature sensor (38). The controller (40) is further configured for providing a de-rated condition warning signal to limiting displacement of the propulsion motor (12, 14, 16, 18).

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