Deere + Company

Carl J Koenig

Giovanni Ananda Wuisan

John R Mahrenholz

Ronald James Huber

Daniel R Klein

Joseph Francis Tilp

Todd R Simms

Stephen E Bonneau

Richard John Gotto

Chris J Schaub

Leah F Beaver

Eric J Bisick

Todd F Velde

Christopher R Benson

Daniel M Kassen

Bradley C Dauderman

Jeffery Dobchuk

Blake A Stork

Nathan A Volkert

A system and method are provided for automatically implementing a commanded change in elevation of a ground profile being created by a work vehicle such as a dozer using a slope control system of the work vehicle. A controller calculates an adjusted target value of a mainfall slope and an adjustment distance sufficient to achieve the desired change in elevation and then controls the mainfall slope of the work vehicle to the adjusted target value as the work vehicle advances by the adjustment distance. Then the mainfall slope is automatically returned to its original value.

Elevation increment-decrement with slope control

A mobile work machine includes a first grade control system that receives a an external reference position signal from a geographic positioning system, and generates blade control signals to control an orientation of a blade in grading a worksite. The mobile work machine also includes a second grade control system that uses blade mainfall and cross slope as well as chassis (or mainframe) mainfall and cross slope to control the orientation of the blade relative to the frame of the work machine to create a planar grade of a desired mainfall and cross slope. When functionality of the first grade control system is interrupted, the mobile work machine automatically switches to using the second grade control system to perform the grading operation, until the interruption to the functionality of the first grade control system is restored.

Mobile grading machine with improved grading control system

A system and method for compensating reduced track speed because of engine droop for a work machine is disclosed. The system may comprise a frame, an attachment coupled to the frame, a ground-engaging mechanism adapted to support the frame, an engine, a motor, a track speed sensor, an engine speed sensor, and a controller. The engine may drive the ground-engaging mechanism and attachment. The engine may be coupled through a variable speed transmission to the ground-engaging mechanism and the attachment. They variable speed transmission may include a hydrostatic circuit. The controller may be adapted to send an increased transmission command signal based on a drop in the engine speed signal when the work machine engages an increased load. The increased transmission command signal may increase a motor speed to cause an increase in track speed to compensate at least a portion of the reduced track speed from the engine speed droop.

Track speed compensation for engine speed droop

Systems and methods are provided for inhibiting the bridging of a work vehicle. A method adjusts a position of an implement of a work vehicle to inhibit a bridging of the work vehicle. The method includes: receiving, by a processor associated with the work vehicle, a chassis pitch angle associated with a chassis of the work vehicle from the Grade Control System; determining, by the processor, whether the chassis pitch angle is greater than a predefined threshold; receiving, by the processor, a current height of the implement relative to a grade from the Grade Control System; determining, by the processor, an offset to move the implement to a height above the grade based on the current height of the implement; and outputting, by the processor, the offset to the Grade Control System to move the implement to inhibit the bridging of the work vehicle.

Work vehicle anti-bridging system and method

Control grip

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Asbury, IA, United States of America

Carl J Koenig