Numerical continuation in nonlinear experiments using local Gaussian process regression

Control-based continuation (CBC) is a general and systematic method to probe the dynamics of nonlinear experiments. In this paper, CBC is combined with a novel continuation algorithm that is robust to experimental noise and enables the tracking of geometric features of the response surface such as f...

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Vydáno v:Nonlinear dynamics Ročník 98; číslo 4; s. 2811 - 2826
Hlavní autoři: Renson, L., Sieber, J., Barton, D. A. W., Shaw, A. D., Neild, S. A.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Dordrecht Springer Netherlands 01.12.2019
Springer Nature B.V
Témata:
Algorithms
Automotive Engineering
Classical Mechanics
Control
Coupled modes
Data points
Dynamical Systems
Engineering
Gaussian process
Mathematical models
Mechanical Engineering
Nonlinear dynamics
Original Paper
Response surface methodology
Robustness (mathematics)
Vibration
Gaussian process regression
Regression-based continuation
Active data selection
Nonlinear experiment
Control-based continuation
ISSN:0924-090X, 1573-269X
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Shrnutí:Control-based continuation (CBC) is a general and systematic method to probe the dynamics of nonlinear experiments. In this paper, CBC is combined with a novel continuation algorithm that is robust to experimental noise and enables the tracking of geometric features of the response surface such as folds. The method uses Gaussian process regression to create a local model of the response surface on which standard numerical continuation algorithms can be applied. The local model evolves as continuation explores the experimental parameter space, exploiting previously captured data to actively select the next data points to collect such that they maximise the potential information gain about the feature of interest. The method is demonstrated experimentally on a nonlinear structure featuring harmonically coupled modes. Fold points present in the response surface of the system are followed and reveal the presence of an isola, i.e. a branch of periodic responses detached from the main resonance peak.
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ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-019-05118-y