State Evolution Determination via Degree of Freedom Similarity

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Solution Overview

Problem

Real systems with a large number of degrees of freedom are difficult to calculate due to interacting degrees of freedom, requiring significant computational effort and resources.

Innovation Solution

A method that selects a subset of degrees of freedom based on similarity analysis, reducing the complexity of state evolution determination by considering only those degrees of freedom with similar temporal developments, thereby reducing computational demands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If all degrees of freedom are considered in the calculation, then the accuracy of state evolution determination is improved, but the computational effort and complexity increase significantly

Engineering Contradiction:
Improveaccuracy of state evolution determinationVSAvoidcomputational complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts and selects only the most relevant degrees of freedom for calculation by determining similarity measures between different degrees of freedom. Degrees of freedom with high similarity to the selected one are included in the reduced set, while less similar ones are excluded, thereby reducing computational complexity while maintaining sufficient accuracy.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the complete set of degrees of freedom into a reduced subset based on similarity criteria. By dividing the full set into relevant and irrelevant portions, the method enables efficient computation focusing only on the segmented relevant subset while excluding less relevant degrees of freedom.

Inventive Principle:
Principle #1Segmentation

2Reliability

If all degrees of freedom are considered in the calculation, then the completeness of system characterization is improved, but the computational resources required increase significantly

Engineering Contradiction:
Improvecompleteness of system characterizationVSAvoidcomputational resources
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts and removes less relevant degrees of freedom from the complete set, retaining only those with high similarity to the selected degree of freedom. This extraction reduces the computational resource requirement while maintaining reliable system characterization through the preserved relevant subset.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the parameter of degree of freedom selection from considering all possible degrees to selecting based on similarity thresholds. This parameter change enables computational resource efficiency while maintaining characterization reliability by dynamically adjusting which degrees of freedom are included based on their similarity measures.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If similarity analysis is performed for all degrees of freedom, then the accuracy of degree selection is improved, but the computational effort increases

Engineering Contradiction:
Improveaccuracy of degree of freedom selectionVSAvoidcomputational time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies partial action by performing similarity analysis only for degrees of freedom that are potentially relevant, rather than exhaustively analyzing all degrees. By using a systematic approach to identify and analyze only the necessary subset, the method achieves accurate selection without the full computational burden of complete analysis.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20230237224A1Method and device for determining a state evolution of a real system
Publication Date: 2023.07.27 DEUTSCHES ZENTRUM FÜR LUFT UND RAUMFAHRT E V
  • US20230237224A1 patent drawing
  • US20230237224A1 patent drawing

AI summary

The invention relates to a method for determining a state evolution of a real system with a plurality N of degrees of freedom, comprising the following steps: determining states for each of the plurality N of degrees of freedom up to a time t0, wherein the determining of states for each of the plurality N of degrees of freedom is carried out by measuring corresponding state variables of the real system; selecting a degree of freedom f from the plurality N of degrees of freedom; determining a measure of similarity between the selected degree of freedom f and each other degree of freedom of the plurality N of degrees of freedom of the real system for the determined states; determining a selection M of degrees of freedom from the plurality N of degrees of freedom based on the measure of similarity; and determining the state evolution of measured states for the selected degree of freedom f based on the selection M of degrees of freedom.