An agricultural vehicle configured for traveling in a driven-wheel-leading mode and a caster-wheel-leading mode. The agricultural vehicle includes a first driven wheel and a second driven wheel, a caster axle, a first caster wheel and a second caster wheel, and a steering system. The steering system includes a first steering actuator connected in between the caster axle and the first caster wheel, a first sensor connected to the caster axle, and a controller operably connected to the first steering actuator and the first sensor. The controller is configured for actuating the first steering actuator to steer the first caster wheel in the driven-wheel-leading mode and the caster-wheel-leading mode.

An agricultural implement comprising: a ground engaging tool; and an actuator mechanism (366; 466; 566). The actuator mechanism is configured to provide a bias force to the ground engaging tool such that it is biased towards a working position. The agricultural implement also includes a controller that is configured to automatically set the level of the bias force that is provided by the actuator mechanism based on control-data.

Embodiments describe a method for positioning a hinged vehicle including a primary part and a secondary part coupled to the primary part at a project site. The method includes receiving, from an image capturing device, digital image data representing one or more features of the secondary part; performing image analysis on the digital image data to identify positions of the one or more features of the secondary part; identifying an angle of at least a portion of the secondary part; calculating a current position of the secondary part based on the angle; calculating a positional difference between a correct position at the project site for the secondary part and a current position of the secondary part at the project site; and initiating a change in a position of the primary part to compensate for the positional difference and to position the secondary part on the correct position.

Disclosed is a hydraulic control valve assembly of automatic steering system for agricultural machine including a proportional directional valve (3). A balancing valve (1) is arranged between the proportional directional valve (3) and the steering cylinder. A first shuttle valve (2) is arranged between the proportional directional valve (3) and the balancing valve (1). The first shuttle valve (2) is positioned on one side of the proportional directional valve (3). An overflow valve (4) is positioned on another side of the proportional directional valve (3). The overflow valve (4) is connected to a second shuttle valve (6) and a logic valve (5) respectively. The hydraulic control valve assembly has a large control power, a rapid response, and is more suitable for the autonomous navigation operation of agricultural machine. Moreover, the system saves more energy, such that the autonomous navigation operation of agricultural machine is more stable.

A travel support system for a work vehicle including a vehicle body and a work device provided on the vehicle body includes a first calculator to calculate a vehicle body occupied area including the vehicle body in a plan view. A second calculator is to calculate a work device occupied area including the work device in the plan view. A third calculator is to calculate a work vehicle occupied area including the work vehicle in the plan view, the work vehicle occupied area including the vehicle body occupied area and the work device occupied area. A position calculator is to calculate a position of the work vehicle in a work field based on positioning data. A controller is to control the work vehicle to move in the work field based on the position of the work vehicle and the work vehicle occupied area.

An agricultural assistance system includes a route creator to create, on a map representing an agricultural field, a travel route along which an agricultural machine travels, an input to receive input of a turn mode which is one of turn modes differing in terms of how a traveling device of the agricultural machine is driven, a position detector to detect a position of the agricultural machine, an automatic operation controller to perform automatic operation in which the automatic operation controller automatically causes the agricultural machine to travel and automatically steers the agricultural machine, and a turn mode changer to, during automatic operation of the agricultural machine, allow the input to receive input of another turn mode to change the turn mode, and output, to the automatic operation controller, a change command to cause the agricultural machine to turn in the other turn mode inputted via the input.

An agricultural machine includes a traveling vehicle body, a position detector to detect a position of the traveling vehicle body, a lifting device to link a working device to the traveling vehicle body, and an automatic operation controller to perform an automatic operation to cause the traveling vehicle body to travel and cause the working device to perform an agricultural job based on a travel route and the position of the traveling vehicle body. The lifting device is operable to, during the automatic operation, place the working device in a work position in which the working device performs the agricultural job, and the automatic operation controller is operable to cause the lifting device to keep the working device in the work position even after stopping the traveling vehicle body and/or the working device to end the automatic operation at a location short of an unworked area of the agricultural field.

An agricultural assistance system includes an input to receive size information of a working device linked to an agricultural machine and job setting(s) for an agricultural job performed on an agricultural field, a route creator to create a travel route for the agricultural machine on a map representing the agricultural field based on the size information and the job setting(s), a status detector to detect a status of the agricultural job, a recorder to, when the agricultural job is interrupted, record interruption data including the size information, the job setting(s), and a result of detection by the status detector associated with identification information of the working device, and a notifier to, if the size information is changed during interruption of the agricultural job, provide a notification indicating that the size information has been changed, when the agricultural job is to be resumed based on the interruption data.

A method for determining an as-driven path of an agricultural work vehicle includes receiving position data indicative of a position of the agricultural work vehicle in a field during a first pass of the agricultural work vehicle in the field, receiving inertial movement data of the agricultural work vehicle during the first pass, and receiving operational data indicative of at least one of a steering angle of a wheel of the agricultural work vehicle, a wheel speed of the wheel of the agricultural work vehicle, or a transmission speed of the agricultural work vehicle during the first pass. Moreover, the method includes generating an as-driven path of the agricultural work vehicle during the first pass based at least in part on the position data, the inertial movement data, and the operational data. Additionally, the method includes performing a control action based on the as-driven path.

An agricultural vehicle monitoring system includes first and second noncontact sensors configured for coupling with an agricultural vehicle, where the first and second noncontact sensors are configured to sense respective first and second environmental characteristics for determining a position of the agricultural vehicle in a field. The system further includes a comparative vehicle monitor in communication with the first and second noncontact sensors. The comparative vehicle monitor includes a filter module to filter outputs of the first and second noncontact sensors based on an indicator of a relative quality of the output of each sensor. The comparative vehicle monitor additionally includes an evaluation module to determine a vehicle position of the agricultural vehicle relative to at least one of the first and second environmental characteristics according to filtered outputs of the first and second noncontact sensors.