Robust optimal design of low frequency metamaterials considering the fabrication imperfections and parameter fluctuations
ISSN: 0332-1649
Article publication date: 19 May 2022
Issue publication date: 12 January 2023
Abstract
Purpose
The purpose of this paper is to develop a robust optimization methodology for metamaterial (MM) unit designs to minimize the effect of manufacturing and operational uncertainties.
Design/methodology/approach
A new robustness quantification function, applicable to both convex and nonconvex relationships between the mean and the standard deviation, is introduced. A distance-based local radial basis function network surrogate model is proposed to substitute the global radial basis function network to reduce the heavy computational cost without any scarification on the solution accuracy.
Findings
The optimized results of a prototype MM unit demonstrate the feasibility and merit of the proposed methodology. The proposed methodology outperforms the existing ones in both performance and robust parameters in the design of a prototype MM unit.
Originality/value
It provides a robust optimization methodology for MM units when considering the imperfections in fabrications and fluctuations in operation and environment conditions in engineering applications.
Keywords
Citation
Li, Y., Sun, D. and Yang, S. (2023), "Robust optimal design of low frequency metamaterials considering the fabrication imperfections and parameter fluctuations", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 42 No. 1, pp. 14-25. https://doi.org/10.1108/COMPEL-01-2022-0034
Publisher
:Emerald Publishing Limited
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