Closed Loop Electro-Hydraulic Control for Combine Header Floatation and Height 932408
Proportional raise and lower poppet valves used in conjunction with a microcontroller can provide closed loop control of hydraulic cylinder pressure or position. Closed loop control of headers on agricultural harvesters enables more sophisticated functionality than present techniques. Floatation (regulating the header's applied ground force) and stubble height (regulating the header's height) are two strategies which can increase crop yield. These allow for more precise tracking of ground contour variations with the header contacting or following above the ground. Machine productivity is increased by consistent and repeatable operation, reduction of operator interaction and automation of header raise and repositioning at the start of each row.
Citation: Chmielewski, T., Torbett, M., and Bohman, C., "Closed Loop Electro-Hydraulic Control for Combine Header Floatation and Height," SAE Technical Paper 932408, 1993, https://doi.org/10.4271/932408. Download Citation
Author(s):
Thomas A. Chmielewski, Mark K. Torbett, Carl E. Bohman
Pages: 8
Event:
International Off-Highway & Powerplant Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Engine cylinders
Productivity
Valves
Automation
Pressure
Starters and starting
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