An arm load control system for a work vehicle including a controller comprising a memory and a processor. The controller is configured to determine whether a lift arm is in a maximum load configuration based on a position of the lift arm relative to a chassis of the work vehicle and output a control signal to a propulsion assembly of the work vehicle indicative of instructions to adjust a tractive effort of the work vehicle based on whether the lift arm is in the maximum load configuration.

A work machine includes a vehicle body including a travel device, a blade supported so as to be rotatable about a pitch axis with respect to the vehicle body, a pitch actuator configured to cause the blade to perform a pitch motion about the pitch axis, and a controller. The determines whether a slip occurs on the travel device during work with the blade, and causes the blade to perform the pitch motion in a backward tilt direction upon determining that the slip occurs.

A work machine includes a vehicle body, a lift frame rotatably supported around a lift axis with respect to the vehicle body, a blade rotatably supported around a pitch axis with respect to the lift frame, a lift actuator connected to the lift frame and the vehicle body, a pitch actuator connected to the blade and the lift frame, a sensor that detects a height of the blade from a reference height determined based on the vehicle body, and a controller that controls the pitch actuator to change a pitch angle of the blade according to the height of the blade. The lift actuator causes the lift frame to perform a lift motion up and down around the lift axis. The pitch actuator causes the blade to perform a pitching motion around the pitch axis.

Systems and methods for implementing a machine control system within a construction machine. The machine control system may include a chassis orientation sensor configured to be mounted to a chassis of the construction machine for detecting a chassis pitch angle. The machine control system may also include an implement orientation sensor configured to be mounted to an implement of the construction machine for detecting an implement pitch angle. The machine control system may further include one or more processors configured to perform operations including receiving, from the chassis orientation sensor, the chassis pitch angle, receiving, from the implement orientation sensor, the implement pitch angle, determining a target pitch angle of the implement based on the chassis pitch angle and the implement pitch angle, and causing movement of one or more implement arms so as to set a pitch angle of the implement to the target pitch angle.

A work vehicle grade control system for a vehicle having a plurality of pneumatic tires, a frame supported by the plurality of tires, and a grader blade configured to move with respect to the frame to grade a surface. The grade control system includes an actuator operatively connected to the grader blade, wherein the actuator is configured to move the grader blade with respect to the frame based on one or more tire pressures. The grade control system includes control circuitry configured to identify a current grade of the surface; identify a position of the grader blade with respect to the surface; identify the one or more tire pressure of one or more of the plurality of tires; and adjust the position of the grader blade with respect to the frame based on the identified current grade and the identified tire pressure of the one or more plurality of pneumatic tires.

A work machine is provided with grade control capability using an imaging system, e.g., rather than GPS. The work machine includes at least one work implement for working at least part of a terrain, and first sensors (e.g., cylinder sensors) generate signals corresponding to positions of the work implement. Second sensors (e.g., stereo cameras) generate signals corresponding to positions of representative features of the terrain (e.g., curbs) in a field of view. A controller receives the signals and determines in a local reference system independent of a global reference system: first position information corresponding to the work implement; and second position information corresponding to the representative features. According to a selected control mode, target parameters for the work implement are determined based on the second position information corresponding to the representative features, and output signals are generated corresponding to a difference between the first position information and the target parameters.

A work machine includes: a satellite communication antenna for detecting a position of an upper swing structure; angle sensors detecting postures of two work devices; position computing devices that calculate postures/positions of the two work devices on the basis of outputs from the satellite communication antenna and the angle sensors; a display device on which the position of at least one work device of the two work devices and a position of a target surface are displayed; a display selection switch that outputs a first input signal for displaying a work device selected by an operator from between the two work devices on the display device; and a display changeover section that displays the work device corresponding to the first input signal input from the display selection switch out of the two work devices and the position of the target work object of the work device on the display device.

An earthmoving system is disclosed. The earthmoving system includes a blade, a controller, and a blade control system configured to control the positioning of the blade. While grading, the earthmoving system is configured to simultaneously position the blade according to each of a fixed slope grading mode, a design driven control grading mode, and an fixed load grading mode.

A grading control system is disclosed. The grading control system may have a lift actuator to raise or lower a work implement, and a tilt actuator to tilt the work implement. The grading control system may also have a first sensor that communicates a signal indicative of a position of the work implement, and a second sensor that communicates a signal indicative of a position of the machine frame. The grading control system may have a controller to determine a track plane of the machine and a desired grade relative to the track plane. Further, the controller may determine an orientation of the work implement relative to the track plane to maintain the desired grade based on the sensor signals. The controller may also be configured to actuate one or both of the lift and the tilt actuators to orient the work implement according to the determined orientation.

A control system for a work vehicle includes a controller. The controller receives actual topography information of a work target. The controller determines a design surface that is positioned below the actual topography. The controller generates a command signal to move the work implement along the design surface. The controller determines if slip of the work vehicle has occurred. The controller raises the design surface when the blade tip of the work implement is positioned below an initial target surface when the slip occurs. The initial target surface is the design surface before the occurrence of the slip.