Combine head position control system with float override

Details Combine head position control system with float override Combine head position control system with float override

A - Human Necessities

01

D

A01D 41/12 (2006.01) A01B 63/02 (2006.01) A01D 41/14 (2006.01)

Patent

CA 2145486

An electronic control system for controlling the position of a combine harvesting head operable over a surface is disclosed herein. The position is normally controlled based upon the monitored position of the head. However, the position is controlled based upon the force or pressure at which the surface is supporting the implement if this force exceeds a predetermined limit. Thus, the system provides for float control override of position control. In particular, a hydraulic positioning assembly positions the head relative to the combined based upon control signals produced by a digital control circuit. The digital control circuit monitors digital signals representative of the head position and the force at which the surface is supporting the head, and compares these signals with digital setpoint data. Based upon the comparison, the control circuit produces control signals for causing the positioning assembly to raise or lower the harvesting head relative to the surface based upon force when the force limit is exceeded and based upon position when the force is below the force limit.

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