Fast Design of Multilayered Shields Using Surrogate Model and Space Mapping

Hongcai Chen, Yang Zhang, Yaping Du, Qingsha S. Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Designing an efficient shield using simulation requires an expansive computational cost due to large ratio of width to thickness. This paper presents a two-level surrogate based optimization process to efficiently design multilayered shields. The method first exploits space-filling sampling to obtain a global optimal start point. The coarse model is then adopted to be the first-level surrogate. Two-dimensional (2-D) simulation is selected as the coarse model to avoid the time consuming high-fidelity 3-D calculation. Sequential design is followed where response surface approximation (RSA) is applied to construct the surrogate of the coarse model. The evaluation time of the RSA is negligible and it is the second-level surrogate. Finally, the optimum design found by the surrogate is refined using space mapping technique to give an approximation of the location of the optimum design of the original problem. By taking advantages of both surrogate modeling and space mapping, the proposed approach can significantly improve the efficiency of the design process. The method is applied to optimize a double shield and a U-shaped double shield to show its efficiency.

Original languageEnglish
Article number8742534
Pages (from-to)698-706
Number of pages9
JournalIEEE Transactions on Electromagnetic Compatibility
Volume62
Issue number3
DOIs
Publication statusPublished - Jun 2020

Keywords

  • Fast design
  • multilayered shield
  • optimization
  • response surface approximation (RSA)
  • space mapping
  • surrogate

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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