| CPC A01D 41/1276 (2013.01) [A01D 41/1273 (2013.01); A01D 41/1277 (2013.01); A01F 12/444 (2013.01); A01F 12/48 (2013.01); A01F 12/446 (2013.01)] | 13 Claims |
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1. A cleaning subsystem of an agricultural harvester, the cleaning subsystem comprising:
a sieve that separates material other than grain from grain in the agricultural harvester;
a cleaning fan that generates air flow through an air duct, the air duct having an upper surface and a lower surface, the air duct defining an airflow path;
a flap having a first end, a second end, and a height extending between the first end and the second end, the height extending along a majority of a distance between the upper surface of the air duct and the lower surface of the air duct, the flap being rotatable about an axis of rotation to redirect the airflow path;
an actuator coupled to the flap and configured to control rotation of the flap about the axis of rotation;
a crop distribution profile detector configured to determine a crop distribution across the sieve and generate a crop distribution signal indicative of the crop distribution;
a flap angle processing system configured to:
receive the crop distribution signal, and
generate a target flap angle indicative of a target flap position of the flap about the axis of rotation based on the crop distribution signal; and
a control signal generator configured to generate an actuator control signal to control the actuator to move the flap to the target flap position indicated by the target flap angle.
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