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

Tadahiro Hyakudome, Masahiko Nakamura, Hiroyuki Kajiwara, Wataru Koterayama

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

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
Title of host publicationProceedings of the International Offshore and Polar Engineering Conference
EditorsJ.S. Chung, R. Frederking, H. Saeki, H. Moshagen
PublisherISOPE
Pages338-345
Number of pages8
Volume1
Publication statusPublished - 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

Fingerprint

Mooring
Equations of motion
Mathematical models
Controllers

All Science Journal Classification (ASJC) codes

  • Ocean Engineering

Cite this

Hyakudome, T., Nakamura, M., Kajiwara, H., & Koterayama, W. (1998). H∞ control of slow drift oscillation of moored floating platform with thrusters. In J. S. Chung, R. Frederking, H. Saeki, & H. Moshagen (Eds.), Proceedings of the International Offshore and Polar Engineering Conference (Vol. 1, pp. 338-345). ISOPE.

H∞ control of slow drift oscillation of moored floating platform with thrusters. / Hyakudome, Tadahiro; Nakamura, Masahiko; Kajiwara, Hiroyuki; Koterayama, Wataru.

Proceedings of the International Offshore and Polar Engineering Conference. ed. / J.S. Chung; R. Frederking; H. Saeki; H. Moshagen. Vol. 1 ISOPE, 1998. p. 338-345.

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

Hyakudome, T, Nakamura, M, Kajiwara, H & Koterayama, W 1998, H∞ control of slow drift oscillation of moored floating platform with thrusters. in JS Chung, R Frederking, H Saeki & H Moshagen (eds), Proceedings of the International Offshore and Polar Engineering Conference. vol. 1, ISOPE, pp. 338-345, Proceedings of the 1998 8th International Offshore and Polar Engineering Conference. Part 2 (of 4), Montreal, Can, 5/24/98.
Hyakudome T, Nakamura M, Kajiwara H, Koterayama W. H∞ control of slow drift oscillation of moored floating platform with thrusters. In Chung JS, Frederking R, Saeki H, Moshagen H, editors, Proceedings of the International Offshore and Polar Engineering Conference. Vol. 1. ISOPE. 1998. p. 338-345
Hyakudome, Tadahiro ; Nakamura, Masahiko ; Kajiwara, Hiroyuki ; Koterayama, Wataru. / H∞ control of slow drift oscillation of moored floating platform with thrusters. Proceedings of the International Offshore and Polar Engineering Conference. editor / J.S. Chung ; R. Frederking ; H. Saeki ; H. Moshagen. Vol. 1 ISOPE, 1998. pp. 338-345
@inproceedings{91b380f4cd1240ec97fb3be0c9f9ad20,
title = "H∞ control of slow drift oscillation of moored floating platform with thrusters",
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.",
author = "Tadahiro Hyakudome and Masahiko Nakamura and Hiroyuki Kajiwara and Wataru Koterayama",
year = "1998",
language = "English",
volume = "1",
pages = "338--345",
editor = "J.S. Chung and R. Frederking and H. Saeki and H. Moshagen",
booktitle = "Proceedings of the International Offshore and Polar Engineering Conference",
publisher = "ISOPE",

}

TY - GEN

T1 - H∞ control of slow drift oscillation of moored floating platform with thrusters

AU - Hyakudome, Tadahiro

AU - Nakamura, Masahiko

AU - Kajiwara, Hiroyuki

AU - Koterayama, Wataru

PY - 1998

Y1 - 1998

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0031642031&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031642031&partnerID=8YFLogxK

M3 - Conference contribution

VL - 1

SP - 338

EP - 345

BT - Proceedings of the International Offshore and Polar Engineering Conference

A2 - Chung, J.S.

A2 - Frederking, R.

A2 - Saeki, H.

A2 - Moshagen, H.

PB - ISOPE

ER -