Patent ID: 6167685
Filing Date: 2001-01-02
Classification: A01D

Abstract:
A header speed control system for controlling the speed of a header in a windrower to a set point speed, said windrower header being capable of alternately carrying a disk cutter or a reel cutter, said system including: indicator means for indicating whether said header is carrying a disk cutter or a reel cutter; an engine driving a power source to produce a power output for driving said header; an engine speed sensor for sensing engine speed and producing an engine speed signal; a header speed sensor for sensing the speed of the header and producing a header speed signal, and, a controller responsive to said indicater means, said engine speed signal and said header speed signal for developing a control signal to control said power output of said power source, said controller including first means producing, as said control signal, an output signal having a first value to control said power source so that said header is driven at a first set point speed when said engine speed is greater than a threshold value, and second means producing, as said control signal, an output signal having a second value to control said power source so that said header is driven at a second set point speed when said engine speed is less than said threshold value and said indicator means indicates that said header is carrying a disk cutter.