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Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS

Double-crystal monochromators (DCMs) are one of the most critical optical devices in beamlines at synchrotron sources, directly affecting the quality of the beam energy and position. As the performance of synchrotron light sources continues to improve, higher demands are placed on the stability of D...

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Autores principales: Bai, Yang, Gong, Xuepeng, Lu, Qipeng, Song, Yuan, Zhu, Wanqian, Xue, Song, Wang, Dazhuang, Peng, Zhongqi, Zhang, Zhen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10000807/
https://www.ncbi.nlm.nih.gov/pubmed/36891844
http://dx.doi.org/10.1107/S1600577523000528
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author Bai, Yang
Gong, Xuepeng
Lu, Qipeng
Song, Yuan
Zhu, Wanqian
Xue, Song
Wang, Dazhuang
Peng, Zhongqi
Zhang, Zhen
author_facet Bai, Yang
Gong, Xuepeng
Lu, Qipeng
Song, Yuan
Zhu, Wanqian
Xue, Song
Wang, Dazhuang
Peng, Zhongqi
Zhang, Zhen
author_sort Bai, Yang
collection PubMed
description Double-crystal monochromators (DCMs) are one of the most critical optical devices in beamlines at synchrotron sources, directly affecting the quality of the beam energy and position. As the performance of synchrotron light sources continues to improve, higher demands are placed on the stability of DCMs. This paper proposes a novel adaptive vibration control method combining variational modal decomposition (VMD) and filter-x normalized least mean squares (FxNLMS), ensuring DCM stability under random engineering disturbance. Firstly, the sample entropy of the vibration signal is selected as the fitness function, and the number of modal components k and the penalty factor α are optimized by a genetic algorithm. Subsequently, the vibration signal is decomposed into band frequencies that do not overlap with each other. Eventually, each band signal is individually governed by the FxNLMS controller. Numerical results have demonstrated that the proposed adaptive vibration control method has high convergence accuracy and excellent vibration suppression performance. Furthermore, the effectiveness of the vibration control method has been verified with actual measured vibration signals of the DCM.
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spelling pubmed-100008072023-03-11 Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS Bai, Yang Gong, Xuepeng Lu, Qipeng Song, Yuan Zhu, Wanqian Xue, Song Wang, Dazhuang Peng, Zhongqi Zhang, Zhen J Synchrotron Radiat Research Papers Double-crystal monochromators (DCMs) are one of the most critical optical devices in beamlines at synchrotron sources, directly affecting the quality of the beam energy and position. As the performance of synchrotron light sources continues to improve, higher demands are placed on the stability of DCMs. This paper proposes a novel adaptive vibration control method combining variational modal decomposition (VMD) and filter-x normalized least mean squares (FxNLMS), ensuring DCM stability under random engineering disturbance. Firstly, the sample entropy of the vibration signal is selected as the fitness function, and the number of modal components k and the penalty factor α are optimized by a genetic algorithm. Subsequently, the vibration signal is decomposed into band frequencies that do not overlap with each other. Eventually, each band signal is individually governed by the FxNLMS controller. Numerical results have demonstrated that the proposed adaptive vibration control method has high convergence accuracy and excellent vibration suppression performance. Furthermore, the effectiveness of the vibration control method has been verified with actual measured vibration signals of the DCM. International Union of Crystallography 2023-02-20 /pmc/articles/PMC10000807/ /pubmed/36891844 http://dx.doi.org/10.1107/S1600577523000528 Text en © Yang Bai et al. 2023 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Bai, Yang
Gong, Xuepeng
Lu, Qipeng
Song, Yuan
Zhu, Wanqian
Xue, Song
Wang, Dazhuang
Peng, Zhongqi
Zhang, Zhen
Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS
title Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS
title_full Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS
title_fullStr Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS
title_full_unstemmed Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS
title_short Adaptive vibration control method for double-crystal monochromator base on VMD and FxNLMS
title_sort adaptive vibration control method for double-crystal monochromator base on vmd and fxnlms
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10000807/
https://www.ncbi.nlm.nih.gov/pubmed/36891844
http://dx.doi.org/10.1107/S1600577523000528
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