METHOD FOR DETERMINING AT LEAST ONE CONTROL PARAMETER OF A CONTROL ELEMENT IN A WEB TENSION CONTROL CIRCUIT FOR A PROCESSING MACHINE

• US 20100280644A1
• Filed: 04/30/2010
• Published: 11/04/2010
• Est. Priority Date: 04/30/2009
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schultze, Stephan, Schnabel, Holger, Goeb, Mario
• Application Number:
  US12/771,068
• Publication Number:
  US 20100280644A1
• Time in Patent Office: Days
• US Class Current: 700/103
• CPC Class Codes: D21G 9/0045 controlling the calendering or finishing
• CPC Class Codes: G05B 13/024 in which a parameter or coefficient is automatically adjusted to optimise the performance

Abstract

The invention relates to a method for determining at least one controller parameter of a control element in a web tension control circuit for a processing machine for processing a web of material, in particular a shaftless printing press. The at least one controller parameter is determined as a function of at least one parameter characterizing the web of material, at least one parameter characterizing the processing machine, and at least one idle time.

Claims

1. A method for determining at least one controller parameter of a control element in a web tension control circuit for a processing machine for processing a web of material, in particular a shaftless printing press, comprising the method step of:

determining the at least one controller parameter as a function of at least one parameter characterizing the web of material, at least one parameter characterizing the processing machine, and at least one idle time.

2. The method as defined by claim 1, further comprising a processing step of performing regularly or in triggered fashion the step of determining the at least one control parameter.

3. The method as defined by claim 1, wherein the at least one controller parameter is determined as a function of a predeterminable weighting factor.

4. The method as defined by claim 2, wherein the at least one controller parameter is determined as a function of a predeterminable weighting factor.

5. The method as defined by claim 1, wherein a value for at least one parameter characterizing the web of material is extracted from a database.

6. The method as defined by claim 4, wherein a value for at least one parameter characterizing the web of material is extracted from a database.

7. The method as defined by claim 1, wherein a value for at least one parameter characterizing the web of material and/or for at least one parameter characterizing the processing machine is measured, estimated, or determined by means of observation using automatic control technology.

8. The method as defined by claim 6, wherein a value for at least one parameter characterizing the web of material and/or for at least one parameter characterizing the processing machine is measured, estimated, or determined by means of observation using automatic control technology.

9. The method as defined by claim 1, wherein a design criterion for determining the at least one controller parameter is predetermined.

10. The method as defined by claim 8, wherein a design criterion for determining the at least one controller parameter is predetermined.

11. The method as defined by claim 1, wherein the at least one controller parameter is determined as a function of a control deviation and/or a change in set-point and/or a predetermination of a machine status.

12. The method as defined by claim 10, wherein the at least one controller parameter is determined as a function of a control deviation and/or a change in set-point and/or a predetermination of a machine status.

13. The method as defined by claim 1, wherein the at least one controller parameter is determined as a function of at least one constant idle time, which contains a data transmission time of a sensor to a computation unit, a measurement time of a sensor, and/or a computation time of a computation unit.

14. The method as defined by claim 12, wherein the at least one controller parameter is determined as a function of at least one constant idle time, which contains a data transmission time of a sensor to a computation unit, a measurement time of a sensor, and/or a computation time of a computation unit.

15. The method as defined by claim 1, wherein the at least one controller parameter is determined as a function of at least one speed-dependent idle time.

16. The method as defined by claim 13, wherein the at least one controller parameter is determined as a function of at least one speed-dependent idle time.

17. The method as defined by claim 15, wherein the at least one constant idle time and/or the at least one speed-dependent idle time are combined to make a total idle time.

18. The method as defined by claim 16, wherein the at least one constant idle time and/or the at least one speed-dependent idle time are combined to make a total idle time.

19. A computation unit, which is arranged for performing a method as defined by claim 1.

20. A computation unit, which is arranged for performing a method as defined by claim 14.