| 主权项 |
1. A system for applying downforce to an agricultural implement having multiple row units, comprising:
a first actuator, said first actuator disposed to apply force to a first row unit, said first actuator including a first down chamber and a first lift chamber, pressure in said first down chamber tending to oppose pressure in said first lift chamber; a second actuator, said second actuator disposed to apply force to a second row unit, said second actuator including a second down chamber and a second lift chamber, pressure in said second down chamber tending to oppose pressure in said second lift chamber; a first downpressure control device in fluid communication with said first down chamber for controlling pressure in said first down chamber; a second downpressure control device in fluid communication with said second down chamber for controlling pressure in said second down chamber; a lift pressure control device in fluid communication with said first lift chamber and said second lift chamber for controlling pressure in said first lift chamber and said second lift chamber; and processing circuitry in electrical communication with said first downforce control device, said second downforce control device, and said lift pressure control device, said processing circuitry configured to modify an operating state of said first downforce control device, said second downforce control device, and said lift control device. |
