H∞ control of slow drift oscillation of moored floating platform with thrusters

Tadahiro Hyakudome, Masahiko Nakamura, Hiroyuki Kajiwara, Wataru Koterayama

Research output: Contribution to conferencePaper

Abstract

The paper is concerned with a H control of the slow drift oscillation of a moored floating platform (catenary shaped mooring chains were used). Slow drift oscillation appears as a result of resonance between the mooring system and the drifting force and the amplitude is very large, but it can be counteracted by thrusters because of its small exciting force. Our aim is to suppress slow drift oscillation using thruster activities that are not affected by wave frequency motion. The H controller was designed using a simplified linear mathematical model obtained from nonlinear motion equations of a floating platform and mooring chains. Model tests were carried out and some successful experimental results were obtained. Moreover the simulated results were in good agreement with experimental ones.

Original languageEnglish
Pages338-345
Number of pages8
Publication statusPublished - Jan 1 1998
EventProceedings of the 1998 8th International Offshore and Polar Engineering Conference. Part 2 (of 4) - Montreal, Can
Duration: May 24 1998May 29 1998

Other

OtherProceedings of the 1998 8th International Offshore and Polar Engineering Conference. Part 2 (of 4)
CityMontreal, Can
Period5/24/985/29/98

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All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

Cite this

Hyakudome, T., Nakamura, M., Kajiwara, H., & Koterayama, W. (1998). H∞ control of slow drift oscillation of moored floating platform with thrusters. 338-345. Paper presented at Proceedings of the 1998 8th International Offshore and Polar Engineering Conference. Part 2 (of 4), Montreal, Can, .