US 11,944,035 B2
System and method for controlling harvesting implement height of an agricultural harvester based on error signal frequency components
Cory Douglas Hunt, Millersville, PA (US); and Jethro Martin, Ephrata, PA (US)
Assigned to CNH Industrial America LLC, New Holland, PA (US)
Filed by CNH Industrial America LLC, New Holland, PA (US)
Filed on May 5, 2021, as Appl. No. 17/308,654.
Prior Publication US 2022/0354056 A1, Nov. 10, 2022
Int. Cl. A01D 41/14 (2006.01); A01D 41/127 (2006.01)
CPC A01D 41/141 (2013.01) [A01D 41/1274 (2013.01); A01D 41/145 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for controlling harvesting implement height of an agricultural harvester, the system comprising:
first and second actuators configured to adjust first and second operating parameters associated with a height or an orientation of the harvesting implement relative to a field surface, respectively;
a sensor configured to capture data indicative of the height of the harvesting implement relative to the field surface; and
a computing system communicatively coupled to the sensor, the computing system configured to:
monitor the height of the harvesting implement relative to the field surface based on the data captured by the sensor;
determine an implement height error signal by comparing the monitored height of the harvesting implement to a predetermined target height;
divide the determined implement height error signal into a first frequency portion and a second frequency portion, the second frequency portion having a greater frequency than the first frequency portion;
control an operation of the first actuator based on the first frequency portion of the implement height error signal; and
control an operation of the second actuator based on the second frequency portion of the implement height error signal.