Professor Cetin has been awarded his third patent.

United States Patent 6,459,976 was granted on October 1, 2002.

The title is “Method and System for Controlling Steady-state Speed of Hydraulic Cylinders in an Electrohydraulic System.”

Abstract:

A method and system for controlling the steady-state speed of a cylinder in an electrohydraulic system having multiple cylinders includes a plurality of levers for controlling each of the cylinders. A controller, in communication with the levers and the hydraulic cylinders, has a limited number of parameters defining at least one desired relationship between steady-state speed and lever position for each of the cylinders stored therein. The controller further determines a current desired relationship for each of the cylinders from the associated at least one desired relationships. Upon detecting movement of the lever, the controller determines a current position of the lever associated with one of the cylinders and then controls the steady-state speed of the associated cylinder based on the limited number of parameters defining the current desired relationship and the position of the lever

Inventors are Chen; Chenyao; Anwar; Sohel; Ingram; Richard G.; Bates; Kent C.; Cetin; Sabri; Pinsopon; Unnat.

The Assignee is Caterpillar Inc.

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