# US 12,222,711 B2 · Method for determining model parameters of a production model of a film extrusion line

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- Number: US 12,222,711 B2
- Document ID: US12222711B2
- Status: Granted
- Kind: B2
- Application number: 17/768,869
- Filed: 2020-10-08
- Published: 2024-03-21
- Granted: 2025-02-11
- Earliest claimed: 2019-10-14
- Assignees: Windmoller & Holscher
- Applicants: Windmöller & Hölscher KG
- Inventors: Martin Backmann; Markus Bussmann; Melanie Schuh; Lennart Ederleh
- Web page: https://patentgrep.com/patent/US12222711B2

## CPC

- G05B 19/41885: {characterised by modeling, simulation of the manufacturing system}
- G05B 13/042: {in which a parameter or coefficient is automatically adjusted to optimise the performance}
- Y02P 90/02: Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A method for a model-based determination of model parameters (MP) of a production model (PM) of a film extrusion line, comprising: detecting of at least two model parameters (MP) in the form of input parameters (EP) of the production model (PM) for detecting a production situation of the film extrusion line and/or in the form of output parameters (AP) of the production model (PM) for detecting a film product situation of the film extrusion line, forming a parameter relationship between the acquired model parameters (MP) by means of the production model (PM), determining at least one further model parameter (MP) in the form of a non-detected input parameter (EP) and/or a non-detected output parameter (AP) of the production model (PM).

## Claims

### Claim 1

A method for automating a control or a regulation of a film extrusion line, comprising:
detecting at least two model parameters which are:
(a) input parameters of a production model for detecting a production situation of the film extrusion line, or
(b) output parameters of the production model for detecting a film product situation of the film extrusion line,
forming a parameter relationship between the at least two model parameters through the production model,
determining, based on the parameter relationship, at least one further model parameter in a form of a non-detected input parameter or a non-detected output parameter of the production model,
automating a control or a regulation of the film extrusion line using the at least one further model parameter,
wherein the model parameters in the form of input parameters are at least one of the following: raw material parameters, recipe parameters, plant parameters, machine parameters, and film parameters.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the model parameters in the form of input parameters are at least one of the following:
economic parameters
process parameters
secondary parameters
productivity parameters.

### Claim 3 (depends on 1)

The method according to claim 1, wherein model parameters in the form of output parameters are at least one of the following:
film parameters
usage parameters
further processing parameters.

### Claim 4 (depends on 1)

The method according to claim 1, wherein at least the model parameters in the form of the input parameters are recorded as an input list or the model parameters in the form of the output parameters are recorded as an output list of the production model.

### Claim 5 (depends on 1)

The method according to claim 1, wherein a neural network of the production model is used at least in forming the parameter relationship between the detected model parameters or in determining the non-detected model parameters.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the formation of the parameter relationships via the production model is bidirectional.

### Claim 7 (depends on 6)

The method according to claim 6, wherein the formation of the parameter relationships via the production model is multidirectional.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the detected model parameters are at least partially prioritized.

### Claim 9 (depends on 8)

The method according to claim 8, wherein the detected model parameters are at least partially prioritized as a function of the non-detected model parameters to be determined.

### Claim 10 (depends on 1)

The method according to claim 1, wherein at least in part external parameters from an external plant are used as model parameters in the form of input parameters, wherein the external parameters being normalized to the production model before the parameter relationship is formed.

### Claim 11 (depends on 1)

The method of claim 1, further comprising:
capturing model parameters in the form of input parameters of the production model,
capturing associated model parameters in the form of output parameters of the production model,
determining a parameter relationship between the acquired input parameters and the acquired output parameters,
saving the determined parameter relationship in the production model.

### Claim 12 (depends on 11)

The method according to claim 11, wherein the steps are carried out repeatedly in the ongoing production process of the film extrusion line.

### Claim 13 (depends on 12)

The method according to claim 12, wherein the steps are carried out repeatedly at least partially, in the ongoing production process of the film extrusion line.

### Claim 14 (depends on 11)

The method according to claim 11, wherein already existing historical data are used for the steps of acquisition.

### Claim 15 (depends on 11)

The method according to claim 11, wherein parameter relationships already saved in the production model are at least partially overwritten or changed.

### Claim 16 (depends on 11)

The method according to claim 11, wherein the step of storing in a general production model is performed to form a specific production model.

### Claim 17 (depends on 11)

The method according to claim 11, wherein for the at least two model parameters are acquired using at least one of:
laboratory values
feedback from customers
feedback from users.

### Claim 18 (depends on 11)

A computer program product comprising instructions which, when the program is executed on a computer, cause the computer to perform the steps of a method having the features of claim 11.

### Claim 19 (depends on 1)

A computer program product comprising instructions which, when the program is executed on a computer, cause the computer to perform the steps of a method having the features of claim 1.