An agricultural machine includes a main frame, a rotate frame, and a row unit. A control method for the machine includes: selecting at least one of: (i) a desired position-based relationship between a portion of the rotate frame and the row unit, and (ii) a desired downforce of the row unit; determining at least one of: (i) an actual position-based relationship defined between the rearward portion of the rotate frame and the row unit, and (ii) an actual downforce of the row unit; and adjusting at least one of: (i) the actual position-based relationship toward the desired position-based relationship, and (ii) the actual downforce of the row unit toward the desired downforce of the row unit; wherein adjusting the actual position-based relationship and adjusting the actual downforce of the row both include moving the rotate frame relative to the main frame of the agricultural machine.

A control method and system which provides for an automatic quick soil system for an agricultural vehicle. The system monitors the output of a hitch draft sensor to determine if a hitch mounted implement comes into contact with the ground surface, and if so, enables a quick soil engagement module to correctly lower the hitch-mounted implement into the ground.

During coordinated operation of multiple different modular traction power units (MPUs), a desired change in relative tractive effort contributed by each of the MPUs is identified. Relative distances between a connection point for each MPU and an implement hitch point is determined, in order to identify a hitch bar target position that will achieve the identified relative tractive effort contribution. The hitch bar is adjusted to make distance adjustments, based on the target position, to achieve the identified relative tractive effort for the MPUs.

A working machine includes a machine body, a lifting device to link a working device to the machine body, the lifting device being capable of moving up and down with the working device between a grounding state in which the working device is in contact with a ground and an ungrounding state in which the working device is out of contact with the ground, and an automatic travel controller to cause the machine body to perform automatic travel according to a planned travel route. The automatic travel controller includes a lifting controller to control the lifting device to move up with the working device from the grounding state to the ungrounding state, and cause the machine body to turn or travel rearward after the lifting controller controls the lifting device to move up with the working device from the grounding state to the ungrounding state.

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.

A system comprising a work machine ECU configured to communicate with a vehicle, a vehicle ECU configured to communicate with a work machine, the vehicle ECU configured to control operation of the vehicle at in a first mode, the first mode being determined by a first signal transmitted from the work machine ECU to the vehicle ECU, the vehicle ECU configured to operate the vehicle in a second mode, the second mode being determined by a second signal transmitted from the work machine ECU to the vehicle ECU, and an actuator configured to send a command to the vehicle ECU to operate the vehicle in a third mode, the third mode being determined by a third signal transmitted from the work machine ECU to the vehicle ECU.

An agricultural work vehicle, such as a tractor, is disclosed. The agricultural work vehicle includes a cab that has a front window and an openable rear window opposite the front window that can be transitioned from a closed position to an open position, an attachment device for connecting a work unit to the agricultural work vehicle, and a camera system with a control unit that is configured to monitor the connecting process. The camera system includes at least one camera which is positioned on the rear window and directed toward the attachment device when the rear window is open. In this way, the at least one camera may provide images to an operator of the agricultural work vehicle during the connecting process.

A method for adjusting an orientation angle of an agricultural implement includes arranging a hitch such that an upper link and at least one lower link is articulated to a support structure of the utility vehicle, and adjusting the orientation angle based on a target length of the upper link. The target length of the upper link is determined as a function of the orientation angle and as a function of a lower link angle.

In a hydraulic adjustment device, preferably for transverse adjustment of the lower links of a three-point power lift on an agricultural machine, with two selectively controllable hydraulic cylinders and a hydraulic control circuit for actuating them, a control circuit with a pressure control device for generating an adjustable control pressure in dependence on an electrical control signal is provided, and a pressure-controlled changeover valve is connected to the pressure control device and, when a first control pressure value is applied, assumes a first switching position in which a first cylinder is connected to a pressure sink and the second cylinder is connected to a pressure source, and, when a second control pressure value is applied which is higher than the first control pressure value, assumes a second switching position in which the first cylinder is connected to the pressure source and the second cylinder is connected to the pressure sink.

A coupling device includes: a first connector that connects to a work vehicle; a second connector that connects to a work device; an actuator that changes a connecting position of at least one of the first connector and the second connector; and a control device that controls the actuator.