Paper Abstract and Keywords |
Presentation |
2018-03-13 13:50
Demodulation method of chaotic vortex detection signal of vortex flow meter
-- Synchronize chaotic application in coupled van der Pol equation -- Masataka Iwai NLP2017-107 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In a vortex flowmeter which widely used in industrial plants, nonlinear phenomena such as frequency entrainments, jump phenomena and chaos may occur due to fluid pulsation by a rotating machine such as a pump,
and may cause an unexpected damage. In this report, we show that a coupled van der Pol equation system can be used as a filter for the chaos generated by the vortex detection signal of the vortex flowmeter and can be demodulated to the correct frequency by frequency entrainments. For the vortex detection signal of the vortex flowmeter model represented by the van der Pol equation, we show that the correct frequency of the vortex detection signal can be demodulated by obtaining the adjustment parameter condition of the coupled van der Pol equation using the describing functions. We simulate the proposed method of the model and apply this method for the vortex detection signal data of the actual vortex flowmeter. We show that the chaotic vortex detection signal can be demodulated to the correct frequency. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Vortex flowmeter / Chaos / Frequency entrainment / Describing function / Van der Pol equation / / / |
Reference Info. |
IEICE Tech. Rep., vol. 117, no. 505, NLP2017-107, pp. 31-35, March 2018. |
Paper # |
NLP2017-107 |
Date of Issue |
2018-03-06 (NLP) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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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NLP2017-107 |
Conference Information |
Committee |
MSS NLP |
Conference Date |
2018-03-12 - 2018-03-14 |
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(See Japanese page) |
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Paper Information |
Registration To |
NLP |
Conference Code |
2018-03-MSS-NLP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Demodulation method of chaotic vortex detection signal of vortex flow meter |
Sub Title (in English) |
Synchronize chaotic application in coupled van der Pol equation |
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Vortex flowmeter |
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Chaos |
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Frequency entrainment |
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Describing function |
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Van der Pol equation |
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Masataka Iwai |
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Speaker |
Author-1 |
Date Time |
2018-03-13 13:50:00 |
Presentation Time |
25 minutes |
Registration for |
NLP |
Paper # |
NLP2017-107 |
Volume (vol) |
vol.117 |
Number (no) |
no.505 |
Page |
pp.31-35 |
#Pages |
5 |
Date of Issue |
2018-03-06 (NLP) |
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