Method for creation of model

A technology of models and model parameters, applied in the field of establishing physical models of real systems, can solve problems such as unreliability and inaccuracy, and achieve the effect of saving time

Pending Publication Date: 2019-06-18
ROBERT BOSCH GMBH
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  • Description
  • Claims
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Problems solved by technology

Because not all possible combinations of input parameters can be measured, there is always an unreliability or inaccuracy of points that are not measured, but can be adjusted for in the model

Method used

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Embodiment Construction

[0024] The invention is schematically illustrated with the aid of the embodiments in the drawings and is described in detail below with reference to the drawings.

[0025] in figure 1 In, the flow of the method for modeling a physical system according to the prior art is shown in a flowchart. In the first step 10, start to build the physical model. In the next step 12, parameterization of the model parameters from the data sheet 14 or similar documents is performed.

[0026] In the next step 16, the unknown model parameters are estimated. In parallel with this, a real system measurement is performed in step 20. With the help of the measured values, optimization of unknown model parameters is performed in step 22. Next (block 24) the unknown model parameters are determined, but only at the locations that were actually measured. A good agreement of the physical model with the measurement is obtained and may not agree very well at locations that are not measured (block 26).

[0027...

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Abstract

Methods for creating a physical model of a real physical system as well as an arrangement for carrying out the method are presented. The physical model is determined by model parameters, some of whichare known and some of which are unknown. A data-based system is trained on the basis of measurements on the real physical system, and the data-based model is used to determine at least one of the unknown model parameters.

Description

Technical field [0001] The present invention relates to a method for building a physical model of a real system and a device for performing the method. Background technique [0002] In the development of technical systems, models that can be used to simulate the behavior of these systems are used. Here, mathematical models use mathematical language to describe, for example, technical or physical systems. The method used to build this model is called modeling. Determine the model parameters that describe the behavior of the model during modeling. [0003] Here, a distinction is made between the so-called white box model and the black box model. The white box model can be observed in the white box model, which involves mathematical equations that describe the behavior and state of the system based on known physical and / or chemical relationships. With the aid of these equations, the behavior of the system can also be reproduced with meaningful intermediate parameters. [0004] In c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06N7/01
Inventor F.施特赖歇特H.马克特T.克鲁泽V.英霍夫M.约翰纳贝尔U.舒尔迈斯特T.胡贝尔R.迪纳E.克洛彭堡M.雷格
Owner ROBERT BOSCH GMBH
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