eprintid: 8012 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/80/12 datestamp: 2023-11-09 16:19:51 lastmod: 2023-11-09 16:19:51 status_changed: 2023-11-09 16:10:57 type: article metadata_visibility: show creators_name: Yazid, E. creators_name: Liew, M.S. creators_name: Parman, S. creators_name: Kurian, V.J. title: Identification of transfer functions from surge motion response of a semisubmersible platform using time-varying NARX model ispublished: pub 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 note: cited By 3 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. date: 2016 publisher: Elsevier Ltd official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947997349&doi=10.1016%2fj.apor.2015.11.001&partnerID=40&md5=9814100203056d741055879a2de0b658 id_number: 10.1016/j.apor.2015.11.001 full_text_status: none publication: Applied Ocean Research volume: 54 pagerange: 53-66 refereed: TRUE issn: 01411187 citation: 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