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  1. 防災科研関係論文

Nonlinear signal-based control with an error feedback action for nonlinear substructuring control

https://nied-repo.bosai.go.jp/records/4297
https://nied-repo.bosai.go.jp/records/4297
57fc9b6c-866c-405b-9021-13a938ebd557
Item type researchmap(1)
公開日 2025-06-09
タイトル
言語 en
タイトル Nonlinear signal-based control with an error feedback action for nonlinear substructuring control
言語
言語 eng
著者 Ryuta Enokida

× Ryuta Enokida

en Ryuta Enokida

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Koichi Kajiwara

× Koichi Kajiwara

en Koichi Kajiwara

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抄録
内容記述タイプ Other
内容記述 A nonlinear signal-based control (NSBC) method utilises the 'nonlinear signal' that is obtained from the outputs of a controlled system and its linear model under the same input signal. Although this method has been examined in numerical simulations of nonlinear systems, its application in physical experiments has not been studied. In this paper, we study an application of NSBC in physical experiments and incorporate an error feedback action into the method to minimise the error and enhance the feasibility in practice. Focusing on NSBC in substructure testing methods, we propose nonlinear sub structuring control (NLSC), that is a more general form of linear substructuring control (LSC) developed for dynamical substructured systems.In this study, we experimentally and numerically verified the proposed NLSC via substructuring tests on a rubber bearing used in base-isolated structures. In the examinations, NLSC succeeded in gaining accurate results despite significant nonlinear hysteresis and unknown parameters in the substructures. The nonlinear signal feedback action in NLSC was found to be notably effective in minimising the error caused by nonlinearity or unknown properties in the controlled system. In addition, the error feedback action in NLSC was found to be essential for maintaining stability. A stability analysis based on the Nyquist criterion, which is used particularly for linear systems, was also found to be efficient for predicting the instability conditions of substructuring tests with NLSC and useful for the error feedback controller design. (C) 2016 The Authors. Published by Elsevier Ltd.
言語 en
書誌情報 en : JOURNAL OF SOUND AND VIBRATION

巻 386, p. 21-37, 発行日 2017-01
出版者
言語 en
出版者 ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
ISSN
収録物識別子タイプ EISSN
収録物識別子 1095-8568
DOI
関連識別子 10.1016/j.jsv.2016.09.023
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