Deere + Company

Andrew Wayne Kelly

Scott Joseph Breiner

Brent Allen Smith

Martin Lavern Ruhter

Scott C Johnson

David Joseph Klas

Nicholas Edward Bollweg

Andrew Joseph Hageman

Craig Ronald Timmerman

James Robert Fullmer

Derek Lehmann

Brent A Smith

Andrew J Hageman

In accordance with one embodiment, a method of controlling a braking of a rotor of an electric motor comprises operating an electric motor in a first mode at an inefficient operating point or inefficient operating curve of a quadrature-axis current versus a direct-axis current such that the braking of the electric motor occurs at a rate based on a rate proportional to or less than the total available power losses in the motor, the inverter, or both. The electric motor is operated in the first mode until the observed rotor speed of the electric motor is less than or equal to a threshold speed; thereafter a multi-phase short circuit can be applied.

Method and system for controlling braking of an electric motor

There is here disclosed an excavation machine having an automatic controlled excavation implement that adjusts the excavation implement to maximize the earth moved in accordance with vehicle operating parameters, and finished terrain parameters.

Automated blade with load management control

A method for controlling an engine in a work machine includes determining a base engine operating limit; determining a hydraulic system load on the engine; calculating a modification value for the base engine operating limit; generating a modified engine operating limit based on the modification value and the base engine operating limit; generating an engine control signal based on the modified engine operating limit; and transmitting the engine control signal to operate the engine at the modified engine operating limit to thereby supply additional power from the engine to the drive train to at least partially compensate for the hydraulic system load.

Work machine, control system and method for controlling an engine in a work machine

A drive system for a work vehicle comprises a control unit adapted to: monitor output of a speed ratio setting input device for a speed ratio setting request signal and output of a drive-request input device for a FWD-only request signal, determine from the speed ratio setting request signal if a requested speed ratio setting represented thereby is one of at least one predetermined speed ratio setting among a plurality of speed ratio settings possible for the work vehicle upon receipt of the FWD-only request signal, and, if so, output at least one control signal engaging a FWD-only mode enabling FWD operation of the work vehicle but disabling RWD operation of the work vehicle. An associated method is disclosed.

Vehicular drive system with FWD-only mode and associated method

A differential lock control system for controlling a differential lock of a work vehicle is adapted to determine if the work vehicle is oriented to travel in a generally straight direction, and, if the work vehicle is so oriented, automatically command activation of the differential lock. An associated method is disclosed.

Differential lock control system and associated method

A work vehicle having a supporting frame and ground engaging wheels is provided with a work implement mounted to the rear portion of the work vehicle. The work implement is designed to drag a body behind the vehicle. The operations of the work vehicle is controlled from an operators cab mounted to the supporting frame. The operators cab is provided with a ROPS for protecting the operator. The ROPS is provided with four vertically extending supporting posts, left and right front supporting posts, and left and right rear supporting posts. An operators seat is located in the operators cab and is arranged diagonally to the longitudinal centerline of the vehicle. The operators seat faces both to the front and to the right side. The right rear corner post is provided with at least one operator control that is in the line of sight of the operator when seated in the operators seat.

Mounting controls on right rear corner post of operators cab

A vehicle is provided with an operators cab having a heating system. The vehicle is powered by an internal combustion engine that is a source of heated fluid. Heated fluid from the engine is directed to a supply line where it is carried to a heat exchanger in communication with the interior of the operators cab. A valve having an electrical actuator regulates the flow of heated fluid through the supply line to the heat exchanger. A non-linear potentiometer controls the actuator so that the heat output of the heat exchanger is linear with respect to the operation of the control knob. The non-linear potentiometer drives the actuator so that the valve is opened at an increasing rate until it its fully opened.

Growing community of inventors

Sherrill, IA, United States of America

Andrew Wayne Kelly