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Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner

Various tools, such as biomedical manipulators, optical aligners, and ultraprecision manufacturing tools, implement nanopositioners that must be dynamically tunable to satisfy the requirements of different working conditions. In this paper, we present the design and analysis of a flexure-based nanop...

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Detalles Bibliográficos
Autores principales: Li, Zeying, Liu, Pengbo, Yan, Peng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7921981/
https://www.ncbi.nlm.nih.gov/pubmed/33669608
http://dx.doi.org/10.3390/mi12020212
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author Li, Zeying
Liu, Pengbo
Yan, Peng
author_facet Li, Zeying
Liu, Pengbo
Yan, Peng
author_sort Li, Zeying
collection PubMed
description Various tools, such as biomedical manipulators, optical aligners, and ultraprecision manufacturing tools, implement nanopositioners that must be dynamically tunable to satisfy the requirements of different working conditions. In this paper, we present the design and analysis of a flexure-based nanopositioner with dynamically tunable characteristics for the implementation of a high-performance servomechanism. The nanopositioner is composed of four flexure beams that are positioned in parallel and symmetric configurations sandwiched between magnetorheological elastomers (MREs). The properties of MREs impart dynamicity to the nanopositioner, allowing the workspace, stiffness, and damping characteristics in particular to be tuned under the action of an external magnetic field. By utilizing elastic beam theory and electromagnetic field coupling analysis, kinetostatic and dynamic models of the proposed nanopositioner were established to predict the variable stiffness property and dynamically tunable characteristics. The models were validated by performing a finite element analysis. Herein, it is shown that the proposed nanopositioner model can actively adjust the trade-offs between the working range, speed, and sustained load capability by changing the magnetic field. The proposed dynamic tuning method offers new insight into the design of flexure-based nanopositioners for real applications.
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spelling pubmed-79219812021-03-03 Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner Li, Zeying Liu, Pengbo Yan, Peng Micromachines (Basel) Article Various tools, such as biomedical manipulators, optical aligners, and ultraprecision manufacturing tools, implement nanopositioners that must be dynamically tunable to satisfy the requirements of different working conditions. In this paper, we present the design and analysis of a flexure-based nanopositioner with dynamically tunable characteristics for the implementation of a high-performance servomechanism. The nanopositioner is composed of four flexure beams that are positioned in parallel and symmetric configurations sandwiched between magnetorheological elastomers (MREs). The properties of MREs impart dynamicity to the nanopositioner, allowing the workspace, stiffness, and damping characteristics in particular to be tuned under the action of an external magnetic field. By utilizing elastic beam theory and electromagnetic field coupling analysis, kinetostatic and dynamic models of the proposed nanopositioner were established to predict the variable stiffness property and dynamically tunable characteristics. The models were validated by performing a finite element analysis. Herein, it is shown that the proposed nanopositioner model can actively adjust the trade-offs between the working range, speed, and sustained load capability by changing the magnetic field. The proposed dynamic tuning method offers new insight into the design of flexure-based nanopositioners for real applications. MDPI 2021-02-19 /pmc/articles/PMC7921981/ /pubmed/33669608 http://dx.doi.org/10.3390/mi12020212 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Zeying
Liu, Pengbo
Yan, Peng
Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner
title Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner
title_full Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner
title_fullStr Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner
title_full_unstemmed Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner
title_short Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner
title_sort design and analysis of a novel flexure-based dynamically tunable nanopositioner
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7921981/
https://www.ncbi.nlm.nih.gov/pubmed/33669608
http://dx.doi.org/10.3390/mi12020212
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