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Paper Abstract and Keywords
Presentation 2022-11-25 15:40
A study on Participation factor for nonlinear dynamical systems based on Koopman mode decomposition
Kenji Takamichi (Osaka Prefecture Univ.), Yoshihiko Susuki (Kyoto Univ.), Marcos Netto (NREL), Atsushi Ishigame (Osaka Prefecture Univ.) NLP2022-79
Abstract (in Japanese) (See Japanese page) 
(in English) The so-called participation factor analysis has been used to evaluate the relative contribution between state vari- ables and modes in linear time invariant systems. In this report, we consider its generalization that is applicable to nonlinear systems using the Koopman Mode Decomposition (KMD). Our approach is based on how the time response of an autonomous system is sensitive to the infinitesimal change of one state variable, and is related to the Lyapunov exponent and the theory of phase-amplitude reduction. By calculating the KMD-based participation factor for a solvable limit-cycling system, we compare the relevance and differences between our approach and the traditional concepts.
Keyword (in Japanese) (See Japanese page) 
(in English) Koopman operator / nonlinear system / participation factor / phase-amplitude reduction / Lyapunov exponent / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 280, NLP2022-79, pp. 103-108, Nov. 2022.
Paper # NLP2022-79 
Date of Issue 2022-11-17 (NLP) 
ISSN Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee NLP  
Conference Date 2022-11-24 - 2022-11-25 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To NLP 
Conference Code 2022-11-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on Participation factor for nonlinear dynamical systems based on Koopman mode decomposition 
Sub Title (in English)  
Keyword(1) Koopman operator  
Keyword(2) nonlinear system  
Keyword(3) participation factor  
Keyword(4) phase-amplitude reduction  
Keyword(5) Lyapunov exponent  
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1st Author's Name Kenji Takamichi  
1st Author's Affiliation Osaka Prefecture University (Osaka Prefecture Univ.)
2nd Author's Name Yoshihiko Susuki  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Marcos Netto  
3rd Author's Affiliation National Renewable Energy Laboratory (NREL)
4th Author's Name Atsushi Ishigame  
4th Author's Affiliation Osaka Prefecture University (Osaka Prefecture Univ.)
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Speaker Author-1 
Date Time 2022-11-25 15:40:00 
Presentation Time 25 minutes 
Registration for NLP 
Paper # NLP2022-79 
Volume (vol) vol.122 
Number (no) no.280 
Page pp.103-108 
#Pages
Date of Issue 2022-11-17 (NLP) 


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