Abstract: A tractor control system, which controls an operating condition of an implement attached to the tractor. The control system includes a sensing means providing a force signal which indicates the pull force necessary to pull an implement in a desired position; a control which receives the force signal; and means for measuring at least one parameter associated with the tractor mode and/or the implement mode and the implement position is adjusted to a new position when the force signal varies. The control system includes pre-determined values associated with certain tractor and/or implement modes. A measured parameter is compared with a pre-determined parameter value and if the measured parameter would result in an undesired movement of the implement, the force signal is deactivated, or the response to the force signal is deactivated to prevent undesired movement of the attachment.

Abstract: A vehicle control system for controlling the height of a linkage on a vehicle having a continuously variable transmission (CVT) in which the linkage is automatically raised and lowered depending on a draft force detected by the vehicle including an input draft force detected by sensors in the CVT or driveline is inputted into the control system and the system further processes the input draft force to provide an output draft force upon which movement of the linkage is based and the control system processes the input draft force by compensating the input draft force detected during acceleration or deceleration and/or compensating the input draft detected whilst travelling along a slope, and/or equalizing the input draft force by applying a ramp function, and/or reducing the input draft force when the linkage is at a predetermined height.

Abstract: A vehicle having a linkage for attaching an implement including a control system for controlling a draft mode of operation in which the linkage is automatically raised and lowered depending on a draft force detected by the vehicle and a lifting cylinder, and when the vehicle travels at low speeds, or is driven in reverse or is stationary, the control system automatically sets the detected draft force to zero and the draft control mode of operation is maintained.

Abstract: A tractor control system, which controls an operating condition of an implement attached to the tractor. The control system includes a sensing means providing a force signal which indicates the pull force necessary to pull an implement in a desired position; a control which receives the force signal; and means for measuring at least one parameter associated with the tractor mode and/or the implement mode and the implement position is adjusted to a new position when the force signal varies. The control system includes pre-determined values associated with certain tractor and/or implement modes. A measured parameter is compared with a pre-determined parameter value and if the measured parameter would result in an undesired movement of the implement, the force signal is deactivated, or the response to the force signal is deactivated to prevent undesired movement of the attachment.

Abstract: A tractor control system, which controls an operating condition of an implement attached to the tractor. The control system includes a sensing means providing a force signal which indicates the pull force necessary to pull an implement in a desired position; a control which receives the force signal; and means for measuring at least one parameter associated with the tractor mode and/or the implement mode and the implement position is adjusted to a new position when the force signal varies. The control system includes pre-determined values associated with certain tractor and/or implement modes. A measured parameter is compared with a pre-determined parameter value and if the measured parameter would result in an undesired movement of the implement, the force signal is deactivated, or the response to the force signal is deactivated to prevent undesired movement of the attachment.

Abstract: A vehicle having a linkage for attaching an implement including a control system for controlling a draft mode of operation in which the linkage is automatically raised and lowered depending on a draft force detected by the vehicle and a lifting cylinder, and when the vehicle travels at low speeds, or is driven in reverse or is stationary, the control system automatically sets the detected draft force to zero and the draft control mode of operation is maintained.

Abstract: A vehicle control system for controlling the height of a linkage on a vehicle having a continuously variable transmission (CVT) in which the linkage is automatically raised and lowered depending on a draft force detected by the vehicle including an input draft force detected by sensors in the CVT or driveline is inputted into the control system and the system further processes said input draft force to provide an output draft force upon which movement of the linkage is based and the control system processes the input draft force by compensating the input draft force detected during acceleration or deceleration and/or compensating the input draft detected whilst travelling along a slope, and/or equalising the input draft force by applying a ramp function, and/or reducing the input draft force when the linkage is at a predetermined height.

Abstract: A control system for a tractor that controls an operating condition of an attached implement and includes a pressure sensing device which senses the pressure in the hydraulic drive circuit and provides a signal indicative of the pull force necessary to pull the implement. The control system further includes a control device which receives the pressure signal and a second signal relating to the speed of the tractor and adjusts the position of the implement to a position within a pre-determined range in order to prevent damage to the tractor or implement.

Abstract: A tractor control system, which controls an operating condition of an implement attached to the tractor. The control system includes a sensing means providing a force signal which indicates the pull force necessary to pull an implement in a desired position; a control which receives the force signal; and means for measuring at least one parameter associated with the tractor mode and/or the implement mode and the implement position is adjusted to a new position when the force signal varies. The control system includes pre-determined values associated with certain tractor and/or implement modes. A measured parameter is compared with a pre-determined parameter value and if the measured parameter would result in an undesired movement of the implement, the force signal is deactivated, or the response to the force signal is deactivated to prevent undesired movement of the attachment.

Abstract: A control system for a tractor having a transmission with a hydraulic drive circuit in which a hydraulic pump supplies pressurised fluid to a hydraulic motor. The control system controls an operating condition of an implement attached to the tractor and said control system comprises a pressure sensing means which senses the pressure in the hydraulic drive circuit and provides a signal which is indicative of the current pull force necessary to pull the implement. The control system further comprises a control means which receives the pressure signal and a second signal relating to the speed of the tractor and adjusts the current position of the implement to a new position when said pressure signal varies. The new position lies within a pre-determined position range dependent on the second signal in order to maintain an optimal, yet safe operating condition of the implement.