Systems and methods for providing grade control on a motor grader without the use of masts attached to the blade. Embodiments include a body angle sensor configured to detect movement of a construction machine's body, a front 3D positioning device configured to detect a geospatial position of the construction machine's body within a world space, a drawbar angle sensor configured to detect movement of the construction machine's drawbar, and a blade angle sensor configured to detect movement of the construction machine's blade. Two positions on the blade may be calculated first within a machine space and subsequently within the world space. Movement of at least one articulating connection may be caused based on the blade positions within the world space.

Methods and systems are described for estimating yaw of an implement relative to a machine. The yaw is estimated using gyro signals. The gyro signals may be provided by gyro sensors such as IMUs that are coupled to the implement and machine.

A grading machine may include a machine body, a grading blade, at least one grading blade sensor configured to sense a position and orientation of the grading blade, a drawbar connecting the grading blade to the machine body, at least one drawbar sensor configured to sense a position and orientation of the drawbar, a user interface, and a control system. The control system may be configured to receive an input from the user interface and position and orient the grading blade and the drawbar to one of a plurality of predetermined ditching positions based on the input.

A grading machine include a machine body, a grading blade, at least one grading blade sensor configured to sense a position and orientation of the grading blade, a drawbar connecting the grading blade to the machine body, a drawbar centershift cylinder, a user interface, and a control system. The control system is configured to receive an input from the user interface and position and orient the grading blade and the drawbar to one of a plurality of predetermined maintenance positions based on the input.

A wedge three-axis inertial sensor damper suspension apparatus prevents shock and vibration impacts on a construction machine from being transferred to inertial sensors used by an automatic control system of the construction machine. The inertial sensor suspension apparatus includes a pocket, a lid, a core disposed in the pocket and covered by the lid, one or more inertial sensors attached to the core, a plurality of elastomer insertions attached to the core and forming an upper wedge between the core and the lid and a lower wedge between the core and the pocket, and a coupler that provides controlled connection of the pocket and the lid to compress the plurality of elastomer insertions using a force corresponding to a target resonance frequency for the inertial sensor suspension apparatus.

A work machine that has an implement coupled to the work machine and a first sensor coupled to the implement. The first sensor identifies the orientation of the implement along more than one axis.

In accordance with an example embodiment, a work vehicle may include a vehicle positioning system providing a vehicle position signal, a ground-engaging blade moveable by blade actuators, a blade sensing system providing a blade position signal, and a controller in communication with the vehicle positioning system, the blade actuators, and the blade sensing system. The controller may be configured to receive the vehicle position signal, receive the blade position signal, determine a target blade position using the vehicle position signal and a stored maintenance pass, the stored maintenance pass indicative of a past position of the blade associated with a past position of the vehicle for a plurality of past vehicle positions, and control the blade actuators to move the blade toward the target blade position.

A work machine that has a blade that is positionable at a plurality of angles relative to the work machine, a positioning system coupled to the blade to transition the blade to any one of the plurality of angles, a user interface providing a user input, and a controller in communication with the positioning system and the user input. Wherein, when the controller receives a first user input signal from the user interface, the controller positions the blade in a first preset position with the positioning system.

A wedge three-axis inertial sensor damper suspension apparatus prevents shock and vibration impacts on a construction machine from being transferred to inertial sensors used by an automatic control system of the construction machine. The inertial sensor suspension apparatus includes a pocket, a lid, a core disposed in the pocket and covered by the lid, one or more inertial sensors attached to the core, a plurality of elastomer insertions attached to the core and forming an upper wedge between the core and the lid and a lower wedge between the core and the pocket, and a coupler that provides controlled connection of the pocket and the lid to compress the plurality of elastomer insertions using a force corresponding to a target resonance frequency for the inertial sensor suspension apparatus.

A motor grader may include a moldboard assembly movably connected to a main frame of the motor grader to move with respect to a plurality of dimensions. The moldboard assembly may include a blade having a lower cutting edge, an upper free edge, and first blade side, and a second blade side. The moldboard assembly may be adapted to pivot the blade by moving the upper free edge with respect to the lower cutting edge. The moldboard assembly may be adapted to change the cross-slope of the blade by moving the first blade side with respect to the second blade side. To determine the pitch and/or cross-slope, a blade sensor may be mounted to the moldboard assembly. The location of the blade sensor on the moldboard assembly may protect the blade sensor and allow the blade sensor to directly measure the pitch and/or cross-slope of the blade.