Method of Operating an Agricultural Baler

Patent metadata

Field	Value
Publication number	US-2016165802-A1
Application number	US-201414907725-A
Country	US
Kind code	A1
Filing date	Jul 17, 2014
Priority date	Jul 31, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

A method and system for operating an agricultural baler, that includes measuring at least one physical input parameter associated with a compression profile of crop material in a bale chamber of the baler; analyzing the compression profile of the crop material, dependent upon the measured at least one physical input parameter; and adjusting at least one physical output parameter of the baler which affects the compression profile of the crop material in the bale chamber.

First claim

1 . A method of operating an agricultural baler, comprising the steps of:
Measuring with a sensor at least one physical input parameter associated with a compression profile of crop material in a bale chamber of the baler; analyzing the compression profile of the crop material with a controller, dependent upon the measured at least one physical input parameter; and adjusting at least one physical output parameter of the baler using a controller which affects the compression profile of the crop material in the bale chamber.

2 . The method of operating an agricultural baler of claim 1 , wherein each said physical input parameter is directly associated with the bale chamber.

3 . The method of operating an agricultural baler of claim 2 , wherein each said physical input parameter comprises one of:
a force on a plunger which reciprocates within the bale chamber; a position of the plunger within the main bale chamber; a position of at least one structural component defining the bale chamber; and a deformation of the crop material along a length of the bale chamber.

4 . The method of operating an agricultural baler of claim 3 , wherein said at least one physical input parameter includes the force on the plunger and the position of the plunger, which are correlated to each other.

5 . The method of operating an agricultural baler of claim 4 , wherein the position of the plunger is determined by measuring a rotation of a flywheel associated with the plunger, and a dead point associated with a change in direction of the plunger.

6 . The method of operating an agricultural baler of claim 3 , wherein said at least one structural component defining the bale chamber includes a pair of side doors and a top door.

7 . The method of operating an agricultural baler of claim 3 , wherein at least one length wheel located within the bale chamber is used to measure the deformation of the crop material along the length of the bale chamber.

8 . The method of operating an agricultural baler of claim 7 , wherein each length wheel is located in a floor of the bale chamber.

9 . The method of operating an agricultural baler of claim 1 , wherein each said physical output parameter is directly associated with the bale chamber.

10 . The method of operating an agricultural baler of claim 9 , wherein each said physical output parameter comprises one of:
a position of one or more side walls associated with the bale chamber; a fixed length of the bale chamber; and a cross-sectional shape of the bale chamber.

11 . The method of operating an agricultural baler of claim 1 , wherein the step of analyzing the compression profile includes:
performing a compression analysis of the crop material within the bale chamber; and performing a relaxation analysis of the crop material within the bale chamber.

12 . The method of operating an agricultural baler of claim 11 , wherein the compression analysis utilizes the mathematical expression:

σ
x

=

K
0

(



b




c


(

ρ

ρ
0

-
1

)

-
1



)

b
c

where:
σ x =uniaxial stress;
K 0 =crop parameter identifying material behavior;
b c =crop parameter identifying material behavior;
ρ 0 =initial density; and
ρ=resulting density.

13 . The method of operating an agricultural baler of claim 11 , wherein the relaxation analysis utilizes the mathematical expression:

F
0


t

F
0

-

F


(
t
)

=

k
1

+

k
2


t

where:
F 0 is the force at the beginning of the relaxation;
t is time; and
k1 and k2 are empirical parameters.

14 . The method of operating an agricultural baler of claim 1 , including repeating the steps of measuring, analyzing and adjusting in a feedback loop to optimize performance of the baler.

15 . The method of operating an agricultural baler of claim 14 , wherein the optimization is carried out with respect to energy consumption of the baler and the compression profile of the crop material.

16 . An agricultural baler control system, comprising
a sensor configured for measuring at least one physical input parameter associated with a compression profile of crop material in a bale chamber of the baler; a controller connected to the sensor, the controller configured for analyzing the compression profile of the crop material, dependent upon the measured at least one physical input parameter; and wherein the controller is configured to adjust at least one physical output parameter of the baler which affects the compression profile of the crop material in the bale chamber.

Assignees

• Cnh Ind America Llc

Inventors

• Verhaeghe Didier
• Coen Tom
• Nona Kenny

Classifications

• A01F15/0825 Primary

  Regulating or controlling density or shape of the bale · CPC title

• B30B9/3007

  Control arrangements · CPC title

• A01F15/042

  Plungers · CPC title

• G01L5/0038

  applying a pushing force · CPC title

• A01F15/00

  Baling presses for straw, hay or the like · CPC title