Structural Stabilization for Offshore Platforms Using a Fin Shaped Damper-Mass with a Rule-Based Control Strategy

Mina Malek Azari, Jose Victorio Salazar Luces, Yasuhisa Hirata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Floating offshore structures such as wind turbines and maritime surveillance platforms experience pitch vibrations caused by wind and wave induced forces which affect their reliability, safety, and efficiency significantly. This paper presents a novel semi-active control system for the pitch stabilization of an offshore platform. We propose a semi-active control system, by which the hydrodynamic forces raised by the motion of a fin-shaped submerged damper mass are utilized to adjust its damping ratio. In this regard first, the grey relational analysis is applied to optimally tune the mass ratio of a passive submerged structural stabilization system. The performance of the stabilization system is then studied in frequency domain for different angles of attacks of the fin damper mass. A rule-based control strategy, where the tuned passive stabilization system changes to a semi-active stabilization system is introduced. In the proposed rule-based control strategy the angle of attack of the fin damper mass is controlled by a scheduler with regards to the collected wave frequency. Based on the obtained results, while the optimally tuned passive stabilization system suppresses the pitch vibration of the offshore platform up to 48.77%, in the proposed semi-active system, the suppression rate rises up to 64.79%.

Original languageEnglish
Title of host publication2020 IEEE International Conference on Mechatronics and Automation, ICMA 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages905-911
Number of pages7
ISBN (Electronic)9781728164151
DOIs
Publication statusPublished - 2020 Oct 13
Event17th IEEE International Conference on Mechatronics and Automation, ICMA 2020 - Beijing, China
Duration: 2020 Oct 132020 Oct 16

Publication series

Name2020 IEEE International Conference on Mechatronics and Automation, ICMA 2020

Conference

Conference17th IEEE International Conference on Mechatronics and Automation, ICMA 2020
CountryChina
CityBeijing
Period20/10/1320/10/16

Keywords

  • fin
  • offshore
  • pitch
  • Stabilization
  • vibration

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization

Fingerprint Dive into the research topics of 'Structural Stabilization for Offshore Platforms Using a Fin Shaped Damper-Mass with a Rule-Based Control Strategy'. Together they form a unique fingerprint.

Cite this