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Identification of transfer functions from surge motion response of a semisubmersible platform using time-varying NARX model

Yazid, E. and Liew, M.S. and Parman, S. and Kurian, V.J. (2016) Identification of transfer functions from surge motion response of a semisubmersible platform using time-varying NARX model. Applied Ocean Research, 54 . pp. 53-66.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

Identification of transfer functions from surge motion response of a semisubmersible platform from model test data is presented in this paper. The identification is carried out by estimating the time-varying model coefficients of a time-varying NARX (TVNARX) model. The coefficients are estimated using proposed method, named artificial bee colony-based Kalman smoother (ABC-KS). System input-output data for identification process are wave height and surge motion from a scaled 1:100 model of a prototype semisubmersible. The applicability of proposed method is assessed numerically and experimentally under unidirectional long-crested random waves. The results show that the linear and quadratic frequency response functions as well as the wave and low frequency responses of a semisubmersible platform can be well identified either in time or frequency domains. The evolution of the nonlinear wave-structure interactions also can be revealed with respect to measured time duration. © 2015 Elsevier Ltd.

Item Type:Article
Impact Factor:cited By 3
Uncontrolled Keywords:Frequency response; Optimization; Semisubmersibles, Artificial bee colonies; Frequency domains; Frequency response functions; Identification process; Input-output data; Low-frequency response; Surge motions; Time-varying models, Transfer functions, experimental study; numerical model; offshore application; random wave; semisubmersible platform; structural response; transfer function; wave-structure interaction, Apoidea
ID Code:25732
Deposited By: Ms Sharifah Fahimah Saiyed Yeop
Deposited On:27 Aug 2021 13:04
Last Modified:27 Aug 2021 13:04

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