relation: https://khub.utp.edu.my/scholars/8012/ title: Identification of transfer functions from surge motion response of a semisubmersible platform using time-varying NARX model creator: Yazid, E. creator: Liew, M.S. creator: Parman, S. creator: Kurian, V.J. description: 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. publisher: Elsevier Ltd date: 2016 type: Article type: PeerReviewed identifier: 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. ISSN 01411187 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947997349&doi=10.1016%2fj.apor.2015.11.001&partnerID=40&md5=9814100203056d741055879a2de0b658 relation: 10.1016/j.apor.2015.11.001 identifier: 10.1016/j.apor.2015.11.001