Patent application number | Description | Published |
20090056961 | Machine with automated blade positioning system - A system is provided for positioning a work implement. The system has at least one actuator for actuating a movement of the work implement. In addition, the system has at least one sensor associated with the at least one actuator and configured to sense at least one parameter indicative of an orientation and a position of the work implement. The system also has at least one ground inclination sensor configured to sense a parameter indicative of an inclination of a surface of the ground. Furthermore, the system has a controller configured to automatically adjust the orientation and position of the work implement in response to data received from the at least one sensor and the at least one ground inclination sensor | 03-05-2009 |
20110035109 | STEERING SYSTEM WITH AUTOMATED ARTICULATION CONTROL - An articulated machine and method of operation, the articulated machine having a first frame with a first traction device and a steering apparatus that controls a steering angle thereof, the first frame pivotally coupled to a second frame at an articulation joint, the second frame having a second traction device, a steering sensor configured to provide a steering signal indicative of the steering angle, and an electronic controller configured to automatically control an articulation angle based on the steering signal. | 02-10-2011 |
20130192919 | ARTICULATION CONTROL SYSTEM HAVING STEERING PATH TRACKING - An articulation control system is disclosed for use with a mobile machine having a traction device. The articulation control system may have a speed sensor configured to generate a first signal indicative of a travel speed of the mobile machine, a steering angle sensor configured to generate a second signal indicative of a steering angle of the traction device, and an articulation actuator configured to articulate a front frame of the mobile machine relative to a rear frame of the mobile machine. The articulation control system may also have a controller in communication with the speed sensor, the steering angle sensor, and the articulation actuator. The controller may be configured to track a travel path of the front frame based on the first and second signals, and to regulate operation of the articulation actuator to cause the rear frame to follow the travel path of the front frame. | 08-01-2013 |
20130255977 | Control for Motor Grader Curb Operations - A method is provided for controlling a motor grader having a blade, a blade shift actuator, a sensor to detect a distance to a curb, one or more steerable wheels, a steering actuator, an articulated frame, and an articulation actuator. In one aspect, an object sensor is located and configured to determine a gap between the blade and the curb, and to maintain the gap at a predetermined value in the absence of user intervention by automatically manipulating one or more of the blade shift actuator, steering actuator, and articulation actuator. The determination as to which one or more of the actuators to use in maintaining the blade gap may be made based on a mode selection by an operator of the motor grader. | 10-03-2013 |
20130292144 | Anti-bounce control system for a machine - A system for automated control of a motor grader includes a first sensor to indicate bounce of the motor grader and a speed sensor to indicate the ground speed. A controller determines a maximum amplitude of the bounce of the motor grader and controls the ground speed of the motor grader at least in part based upon the maximum amplitude of the bounce. A method is also provided. | 11-07-2013 |
20130304331 | Display-Based Control for Motor Grader - A method, controller and system in accordance with various aspects of the present disclosure provide display-based control of a motor grader for grading near a curb or other roadway marker. A blade image is displayed to the operator on a display screen showing a portion of the blade and a portion of the curb or marker, and input is received from the operator to move the blade such that a gap between the portion of the blade and the portion of the curb conforms to a target distance. The gap between the portion of the blade and the portion of the curb is monitored as the motor grader moves along the curb and the location of the blade relative to the curb is automatically adjusted such that the gap remains at the target distance. The blade image may be updated as the motor grader proceeds along the curb. | 11-14-2013 |
20140041884 | Auto Crab Operation for Motor Grader - An apparatus and method are provided for assisting an operator of a motor grader to steer the motor grader in a crab steer mode. The method includes receiving an operator selection of an automatic crab steer mode, determining that a condition of the motor grader is such as to permit automatic crab steer, and receiving an operator steering command. The received operator steering command is converted to an articulation command to place the machine into a crab steer mode. The articulation command is executed and is also converted into a final steering command consistent with the articulation command, and the final steering command is then executed. | 02-13-2014 |
20140107895 | System for Work Cycle Detection - A payload control system includes a tool position sensor, a boom lift sensor, and a boom swing sensor. A controller is configured to determine a segment of a work cycle based upon the tool position, the boom lift, and the boom swing signal, and determine a payload moved by the tool during the segment of the work cycle. | 04-17-2014 |
20140107897 | Payload Estimation System - A payload control system includes a sensor system and a force sensor system. A controller determines a calibration machine state, a calibration linkage force, and machine calibration parameters based at least in part upon the calibration machine state and the calibration linkage force. The controller also determines a loaded implement machine state, a loaded implement linkage force, and a mass of the payload based at least in part upon the machine calibration parameters, the loaded implement machine state, and the loaded implement linkage force. | 04-17-2014 |
20140109647 | System for Determining Coefficients of Seal Friction - A system for determining a hydraulic seal coefficient of friction of a hydraulic cylinder includes a force sensor to provide a force signal indicative of a force of the cylinder. A controller is configured to receive a plurality of first force signals at a first load and determine a first friction force and receive a plurality of second force signals at a second load and determine a second friction force. A hydraulic seal coefficient of friction is determined based at least in part upon the first friction force and the second friction force. A method is also disclosed. | 04-24-2014 |
20140326471 | Motor Grader Cross Slope Control With Articulation Compensation - A motor grader is provided having cross slope cut angle control for providing accurate cuts generally, and particularly while the machine is travelling in other than a straight and level fashion. A controller is configured to adjust the cross slope angle of the blade, so that the cross slope cut angle corresponds to a desired cross slope cut angle. The controller receives a signal indicative of the desired cross slope cut angle and executing a pure pursuit procedure to identify a blade cross slope angle to yield the desired cross slope cut angle. The pure pursuit procedure includes identifying a blade travel direction, and identifying a horizontal component thereof. The blade edge is projected onto a plane perpendicular to the horizontal component of the blade travel direction, generating a slope function specifying the cross slope cut angle as a function of blade cross slope angle. | 11-06-2014 |