A system and method for limiting articulation between a front frame and a rear frame of an articulated machine are disclosed. The system and method receive steering signals and determine impending contact between the front frame and the rear frame based on the received steering signals. Additionally, an amount by which to reduce torque at a hitch coupled between the front and rear frames so as to limit an articulation characteristic of the front frame relative to the rear frame to a predetermined value is determined, responsive to determination of impending contact. Prior to contact, rimpull of the articulated machine is reduced based on the determined amount of torque.

A work machine includes a vehicle body, a traveling wheel, a steering actuator, an articulation actuator, an articulation angle sensor, and a controller. The vehicle body includes a rear frame and a front frame. The front frame is connected so as to be able to articulate left and right with respect to the rear frame. The traveling wheel is supported by the vehicle body. The steering actuator steers the traveling wheel to the left or right. The articulation actuator changes an articulation angle between the rear frame and the front frame. The articulation angle sensor detects the articulation angle. The controller performs an automatic steering control that automatically steers the traveling wheel by controlling the steering actuator. The controller acquires the articulation angle. The controller limits travel of the vehicle body or limits the automatic steering control according to the articulation angle.

A terrain-based travel assist system and method are provided for stability control in a self-propelled work vehicle such as an excavator comprising ground engaging units and at least one work implement configured for controllably working terrain. Upon selecting or determining a travel mode for the work vehicle, the respective predetermined target positions and/or operations of the at least one work implement are retrieved from data storage, corresponding to the determined travel mode. Feedback signals are received from sensors corresponding to respective current positions and/or operations of the at least one implement, and in some embodiments to a vehicle speed. Control signals are generated for automatically controlling the at least one work implement to the respective predetermined target positions and/or through the respective operations, responsive to the determined travel mode and the received feedback signals.

A motor grader representing a work vehicle includes a steering mechanism and a control unit. The control unit controls the steering mechanism to maintain constant, a rate of change in a direction of travel per unit travel distance of the motor grader.

The present disclosure provides methods for adjusting steering angle and articulation angle in an auto steering operation of a work vehicle. The percentage of travel of an articulation joystick of the work vehicle at least partially determines an articulation desired angle change, which can be used to calculate an articulation desired angle and a steering desired angle change. The difference between the articulation desired angle and an articulation angle detected by an articulation angle sensor is used to adjust the articulation angle. The steering desired angle change can be used to calculate a steering desired angle. The difference between the steering desired angle and a steering angle detected by a steering angle sensor is used to adjust the steering angle.

A control system of a work machine including an operator's cab and an implement, the system comprising a vehicle control unit for controlling the machine; a first control device located in the cab for controlling a steering function of the machine; a second control device located in the cab for controlling the implement; a CB transceiver located in the cab, the CB transceiver configured to receive and transmit signals; and a CB microphone control disposed on the first control device or the second control device, the CB microphone control being operably actuable between an active position and an inactive position, where in the active position the transceiver is enabled to transmit a signal, and in the inactive position the transceiver is enabled to receive a signal.

A control arrangement for a work vehicle has a first operator control configured to provide a steering input to turn steered wheels of the vehicle, and a second operator control having two control switches configured to provide a wheel lean input to lean the steered wheels and an articulation input to articulate the chassis of the vehicle. The control switches are positioned on the second operator control so that a single movement of a single digit of an operator's hand applied to the control switches simultaneously initiates the wheel lean input and the articulation input.

In a work vehicle, such as a motor grader, having at least one actuator for positioning a component, an operator control system includes at least one controller configured to control the at least one actuator, and a control movable through a range of motion and having at least two detents, at least one located on each side of a neutral position of the control. The at least one controller is configured to control the at least one actuator based on positions of the control as the control is moved through its range of motion, and correlate at least one input signal from the control when at least one of the detents with at least one reference position of the component.

A work vehicle includes an automatic running control unit 51 that executes automatic running based on an own vehicle position and a target running path; a manual running control unit 52 that executes manual running based on an operation signal from a manual running operation unit 9 that is manually operated; a first control unit 61 that executes a change from manual running to automatic running, a manual stoppage of the vehicle being a condition for the change; a second control unit 62 that executes a forced stoppage of the vehicle when changing from automatic running to manual running; and a third control unit 63 that executes a forced stoppage of the vehicle by temporarily suspending automatic running in response to a suspend instruction from the manual running operation unit 9, and resumes automatic running in response to a resume instruction from the manual running operation unit 9.

A work vehicle includes an automatic running control unit 51 that executes automatic running based on an own vehicle position and a target running path; a manual running control unit 52 that executes manual running based on an operation signal from a manual running operation unit 9 that is manually operated; a first control unit 61 that executes a change from manual running to automatic running, a manual stoppage of the vehicle being a condition for the change; a second control unit 62 that executes a forced stoppage of the vehicle when changing from automatic running to manual running; and a third control unit 63 that executes a forced stoppage of the vehicle by temporarily suspending automatic running in response to a suspend instruction from the manual running operation unit 9, and resumes automatic running in response to a resume instruction from the manual running operation unit 9.