A work vehicle includes a work implement. A control system for the work vehicle includes a controller. The controller acquires an end position and a target distance of work performed by a work vehicle. The controller determines, as a start position, a position that is away from the end position by the target distance. The controller generates a command signal to start work from the start position toward the end position and to operate the work implement according to a target design topography. The controller modifies the target distance based on a result of the work.

A first process acquires a boundary position between a work area and a dumping area. A second process acquires a current position of a work machine. A third process controls the work machine so as to form a berm that acts as a wheel stop by raising a work implement from a position, the position being away from the boundary position toward the work area by a predetermined distance, when the work machine is traveling from the work area toward the dumping area.

The differential control device prohibits or limits a differential motion generated by the differential device. The sensor detects a turning angular velocity of the motor grader. Based on the turning angular velocity detected by the sensor, the controller controls the differential control device to perform the differential prohibition or limitation.

A work machine includes a frame, a traction system supporting the frame, a power source mounted on the frame, a switched reluctance motor, an inverter configured to control power to the motor from a power source, and a controller. The controller is configured to receive a signal indicating a desired torque and determine if the desired torque is between an upper threshold and a lower threshold. If the desired torque is between the upper threshold and the lower threshold, pulse width modulation is used to produce a PWM adjusted torque command, and the motor is commanded based on the PWM adjusted torque command. The PWM adjusted torque command is configured to cycle between the upper threshold and the lower threshold to produce the desired torque.

A system controls a work machine including a work implement. The system includes a sensor and a controller. The controller acquires current position data of the work machine, acquires actual topography data, acquire default target displacement data that defines a target displacement according to a movement amount of the work machine, acquires a work interval indicative of a distance between a previous start position of work by the work machine and a current start position behind the previous start position, generates modified data with the default target displacement data modified according to the work interval, refers to the modified data to determine the target displacement according to the movement amount of the work machine from the current start position, determines topography data with the actual topography data vertically displaced downward by the target displacement as a target profile, and moves the work implement according to the target profile.

Power based self-sensing of a rotor position of an SR motor at mid to high speeds and low torque is achieved by an SR motor control system by comparing the motor power to an injection maximum power. A position current pulse is injected to a stator pole in response to the motor power being less than the injection maximum power. An actual stator current created by the position current pulse is compared to an estimated stator current, and a stored estimated rotor position in a memory is updated to a new estimated rotor position if the actual stator current is not equal to the estimated stator current.

A work vehicle includes a work implement. A control system for the work vehicle includes a controller. The controller determines a target design terrain indicating a target trajectory of the work implement, and operates the work implement to dump materials on a current terrain sequentially from a nearer side to a farther side of the work vehicle in accordance with the target design terrain. At least a part of the target design terrain is located above the current terrain.

A control system is disclosed. The control system may include a first input component to control a lean angle of at least one set of wheels of a machine and to provide a visual and/or tactile indication of the lean angle. The control system may include a second input component to control an articulation angle of an articulated joint of the machine and to provide a visual and/or tactile indication of the articulation angle. The control system may include a third input component to control a rotation angle of an implement of the machine and to provide a visual and/or tactile indication of the rotation angle.

A control system for a work vehicle includes a controller. The controller determines a work zone at a work site. The controller determines a target design topography at least partially positioned below an actual topography at the work site. The controller specifies a non-work zone. The non-work zone is a portion in which the actual topography is positioned below the target design topography in the work zone. The controller modifies the work zone based on the non-work zone. The controller generates a command signal to operate a work implement of the work vehicle according to the modified work zone and the target design topography.

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.