Automatic ground speed control system for a work vehicle
First Claim
1. An automatic ground speed control system for a work vehicle having a prime mover supplying torque to a ground engaging traction device and an electronic control unit (ECU), the control system comprising:
- a speed sensor generating a vehicle speed signal, the speed sensor operatively connected to the ECU;
a traction device angle sensor generating an angle signal which represents an angle of the traction device with respect to an axis of the work vehicle, the traction device angle sensor operatively connected to the ECU; and
a vehicle guidance system generating a vehicle position signal, wherein the ECU determines a direction of the vehicle position signal and further determines a ground speed limit of the work vehicle based on the direction of the work vehicle.
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Accused Products
Abstract
A method and apparatus for automatically controlling ground speed of a work vehicle. The apparatus includes a speed sensor generating a vehicle speed signal, the speed sensor operatively connected to a controller. A traction device angle sensor generates an angle signal which represents an angle of the traction device with respect to an axis of the work vehicle, wherein the traction device angle sensor operatively connected to the controller. A vehicle guidance system is configured to generate a vehicle position signal, wherein the controller determines the ground speed of the vehicle based on at least one of: i) a tracking error of the vehicle relative to the vehicle position signal; ii) a planned curved vehicle path; iii) a planned location of the vehicle within a defined portion of a field; and iv) a planned path segment and an associated change in direction of travel of the work vehicle.
21 Citations
20 Claims
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1. An automatic ground speed control system for a work vehicle having a prime mover supplying torque to a ground engaging traction device and an electronic control unit (ECU), the control system comprising:
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a speed sensor generating a vehicle speed signal, the speed sensor operatively connected to the ECU; a traction device angle sensor generating an angle signal which represents an angle of the traction device with respect to an axis of the work vehicle, the traction device angle sensor operatively connected to the ECU; and a vehicle guidance system generating a vehicle position signal, wherein the ECU determines a direction of the vehicle position signal and further determines a ground speed limit of the work vehicle based on the direction of the work vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An automatic ground speed control system for a work vehicle having a steerable wheel and a prime mover supplying torque to a ground engaging traction device, the control system comprising:
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a speed sensor generating a vehicle speed signal; a traction device angle sensor generating an angle signal which represents an angle of the traction device with respect to an axis of the work vehicle; a vehicle guidance system generating a vehicle position signal; a user interface device configured to receive one or more input values provided by an operator; and control circuitry operatively connected to the speed sensor, the traction device angle sensor, the vehicle guidance system, and the user interface device, wherein the control circuitry includes a processor and a memory, wherein the memory is configured to store program instructions and the processor is configured to execute the stored program instructions to; determine the input value received by the user interface device; and determine a ground speed limit of the work vehicle based on a determined direction of the work vehicle and the determined input value. - View Dependent Claims (14, 15, 16, 17)
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18. A method of automatically controlling the ground speed of a work vehicle moving through a field having a working area and a headland area, the method comprising:
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moving the vehicle at a defined ground speed limit along a predetermined straight vehicle path located in the working area; reducing the defined ground speed limit based on a deviation of the work vehicle from the predetermined straight vehicle path when the deviation exceeds a predefined lateral error threshold; moving the vehicle along a curved path defined in the headland area; and reducing the defined ground speed limit based on a predefined curvature threshold value when the defined ground speed limit exceeds the associated predefined curvature threshold value. - View Dependent Claims (19, 20)
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Specification