Lekas, S.A., Drummond, R., Grant, P.S. et al. (1 more author) (2022) Closed-loop control of dielectric permittivity for 3D-printed radio-frequency devices. In: 6th IEEE Conference on Control Technology and Applications (CCTA). IEEE Conference on Control Technology and Applications (CCTA), 23-25 Aug 2022, Trieste, Italy. Institute of Electrical and Electronics Engineers , pp. 932-937. ISBN 978-1-6654-7338-5
Abstract
Additive manufacturing (AM) offers significant advantages over traditional manufacturing methods for the fabrication of radio-frequency (RF) devices due to lower production costs, flexibility to produce complex geometries, and ability to vary the internal composition of a part. Because AM processes are typically run without any online feedback control, printed parts may be compromised by defects. This paper proposes a feedback control algorithm to enable closed-loop control of a graded-index (GRIN) RF lens produced using a Fused Filament Fabrication printer. As a GRIN lens relies on spatially-varying permittivity, differing densities were printed on a layer-by-layer basis, thus changing the permittivity through the lens depth. The control system used a split ring resonator to measure the permittivity of printed material, and the control action was applied by updating the printed infill density in each layer. The results indicate the controller could detect and adjust for errors, demonstrating the potential of closed-loop control for precise fabrication of high value-added RF devices.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Authors. Except as otherwise noted, this author-accepted version of a proceedings paper published in 2022 IEEE Conference on Control Technology and Applications (CCTA) is made available under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Funding Information: | Funder Grant number UK Research and Innovation EP/T012412/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 16 Sep 2022 13:03 |
Last Modified: | 21 Jun 2023 10:05 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/CCTA49430.2022.9966176 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:190812 |