Agricultural baler with controlled wrapping material brake
A wrapping assembly includes: a material roll configured to hold a roll of wrapping material; a duckbill assembly including a duckbill carrying a duckbill roll and configured to draw material from a roll of wrapping material held by the material roll; a duckbill actuator coupled to the duckbill to move the duckbill between an insert position and a home position; a variable brake associated with the material roll and configured to apply a variable braking force to the material roll; and a controller operatively coupled to the duckbill actuator and the brake. The controller is configured to: determine an averaged electric current draw of the duckbill actuator during a sampling period is below a defined value and responsively output a brake increase signal so the brake increases applied braking force to the material roll by a defined amount.
1. A wrapping assembly for an agricultural baler, comprising:
a material roll configured to hold a roll of wrapping material;
a duckbill assembly comprising a duckbill carrying at least one duckbill roll and configured to draw material from a roll of wrapping material held by the material roll, the duckbill being movable between an insert position and a home position;
a duckbill actuator coupled to the duckbill and configured to move the duckbill between the insert position and the home position;
a variable brake associated with the material roll and configured to apply a variable braking force to the material roll; and
a controller operatively coupled to the duckbill actuator and the brake, the controller being configured to:
determine an averaged electric current draw of the duckbill actuator during a sampling period is below a defined value; and
output a brake increase signal so the brake increases applied braking force to the material roll by a defined amount when the averaged electric current draw is below the defined value,
determine a second averaged electric current draw of the duckbill actuator during a second sampling period is below the defined value; and
output a second brake increase signal so the brake increases the applied braking force to the material roll by a second defined amount when the second averaged electric current draw is below the defined value.
2. The wrapping assembly of claim 1 , wherein the sampling period occurs as the duckbill actuator moves the duckbill from the insert position to the home position.
3. The wrapping assembly of claim 1 , wherein the sampling period defines at least one of a defined time interval, a time period during a defined position change of the duckbill, or a defined position range of the duckbill actuator.
4. The wrapping assembly of claim 1 , wherein the brake is an electric brake.
5. The wrapping assembly of claim 4 , wherein the controller is configured to adjust the applied braking force from the brake through pulse-width modulation, the output brake increase signal being output to the brake by the controller.
6. The wrapping assembly of claim 1 , wherein the defined amount is no more than 3% of the applied braking force.
7. The wrapping assembly of claim 1 , wherein the second defined amount is no more than 3% of the applied braking force.
8. An agricultural baler, comprising:
a chassis;
a baling chamber carried by the chassis; and
a wrapping assembly carried by the chassis, the wrapping assembly comprising:
a material roll configured to hold a roll of wrapping material;
a duckbill assembly comprising a duckbill carrying at least one duckbill roll and configured to draw material from a roll of wrapping material held by the material roll, the duckbill being movable between an insert position and a home position;
a duckbill actuator coupled to the duckbill and configured to move the duckbill between the insert position and the home position;
a variable brake associated with the material roll and configured to apply a variable braking force to the material roll; and
a controller operatively coupled to the duckbill actuator and the brake, the controller being configured to:
determine an averaged electric current draw of the duckbill actuator during a sampling period is below a defined value; and
output a brake increase signal so the brake increases applied braking force to the material roll by a defined amount when the averaged electric current draw is below the defined value;
determine a second averaged electric current draw of the duckbill actuator during a second sampling period is below the defined value; and
output a second brake increase signal so the brake increases the applied braking force to the material roll by a second defined amount when the second averaged electric current draw is below the defined value.
9. The agricultural baler of claim 8 , wherein the sampling period occurs as the duckbill actuator moves the duckbill from the insert position to the home position.
10. The agricultural baler of claim 8 , wherein the sampling period defines at least one of a defined time interval, a time period during a defined position change of the duckbill, or a defined position range of the duckbill actuator.
11. The agricultural baler of claim 8 , wherein the brake is an electric brake.
12. The agricultural baler of claim 11 , wherein the controller is configured to adjust the applied braking force from the brake through pulse-width modulation, the output brake increase signal being output to the brake by the controller.
13. The agricultural baler of claim 8 , wherein the defined amount is no more than 3% of the applied braking force.
14. The agricultural baler of claim 8 , wherein the second defined amount is no more than 3% of the applied braking force.