Caterpillar Inc.

John Andrew Yeoman

Stephen V Lunzman

Michael Dan Strnad

Kevin Lynn Claytor

Bradford Jay Holt

Clifford E Miller

Sean Johnson

Mitchell J McGowan

Dean J Schlickbernd

Bryan L Fredrickson

A method of controlling the speed of a right front wheel and a left front wheel on a work machine includes receiving a speed command based at least partially on an operator input and monitoring at least one wheel steering angle of at least one front wheel. A first front wheel speed command may be determined based at least partially on the at least one wheel steering angle. In addition, a second front wheel speed command may be determined based at least partially on the at least one wheel steering angle. The first front wheel speed command and the second front wheel speed command may be output to independently control the speed of the right and the left front wheels.

Front-wheel drive steering compensation method and system

A method is provided for controlling an all-wheel-drive vehicle. The method includes providing an aggression signal and determining a desired speed ratio based on the aggression signal. An output speed signal corresponding to the determined desired speed ratio is generated.

Control for an all-wheel-drive vehicle

A system for mitigating hop in a propelled machine is provided. A controller is operable to receive an aggressiveness command based on an operator input. A sensor is operable to measure a parameter indicative of hop and output a hop signal indicative of a magnitude of machine hop, based on the measurement. A manager is operable to reduce an aggressiveness indicated by the aggressiveness command in proportion to the indicated magnitude of machine hop.

Systems and methods for the mitigation of hop

A method for controllably moving a machinery platform of a work machine having an electro-hydraulic system is disclosed. The work machine includes at least one swing motor configured to move the machinery platform . The changing speed of the swing motor is determined. A solenoid actuated valve is controlled in response to the determination. The solenoid actuated valve is configured to responsively produce a relief valve pilot signal . The two-way relief valve is controllably shifted in response to the inputted relief valve pilot signal . At least one of a high pressure by-pass valve and a low pressure by-pass valve is selected in response to the two-way relief valve shifting.

Growing community of inventors

Dunlap, IL, United States of America

John Andrew Yeoman