Abstract
The paper is concerned with the dynamic positioning control of a moored floating platform model. Moorings are used to maintain the position of the platform against quasi-constant external forces induced by current and wind. The control purpose is to suppress the slow drift oscillation due to drifting force in irregular waves using thrusters so that they do not respond to the linear exciting force in the wave frequency range. Control of motions in the wave frequency region has to be ignored because the amplitude of those motions is smaller than that of the slow drift oscillation and enormous thruster power is needed to control them. The problem was formulated in the framework of H∞ control, was solved using the LMI (linear matrix inequalities) Control Toolbox on Matlab. Model experiments in oblique incident waves were carried out and some successful results are shown.
| Original language | English |
|---|---|
| Pages | 641-648 |
| Number of pages | 8 |
| Publication status | Published - Jan 1 1997 |
| Event | Proceedings of the 1997 7th International Offshore and Polar Engineering Conference. Part 3 (of 4) - Honolulu, HI, USA Duration: May 25 1997 → May 30 1997 |
Other
| Other | Proceedings of the 1997 7th International Offshore and Polar Engineering Conference. Part 3 (of 4) |
|---|---|
| City | Honolulu, HI, USA |
| Period | 5/25/97 → 5/30/97 |
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All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Ocean Engineering
- Mechanical Engineering
Cite this
Control system design and model experiments on thruster assisted mooring system. / Nakamura, Masahiko; Kajiwara, Hiroyuki; Koterayama, Wataru; Hyakudome, Tadahiro.
1997. 641-648 Paper presented at Proceedings of the 1997 7th International Offshore and Polar Engineering Conference. Part 3 (of 4), Honolulu, HI, USA, .Research output: Contribution to conference › Paper
}
TY - CONF
T1 - Control system design and model experiments on thruster assisted mooring system
AU - Nakamura, Masahiko
AU - Kajiwara, Hiroyuki
AU - Koterayama, Wataru
AU - Hyakudome, Tadahiro
PY - 1997/1/1
Y1 - 1997/1/1
N2 - The paper is concerned with the dynamic positioning control of a moored floating platform model. Moorings are used to maintain the position of the platform against quasi-constant external forces induced by current and wind. The control purpose is to suppress the slow drift oscillation due to drifting force in irregular waves using thrusters so that they do not respond to the linear exciting force in the wave frequency range. Control of motions in the wave frequency region has to be ignored because the amplitude of those motions is smaller than that of the slow drift oscillation and enormous thruster power is needed to control them. The problem was formulated in the framework of H∞ control, was solved using the LMI (linear matrix inequalities) Control Toolbox on Matlab. Model experiments in oblique incident waves were carried out and some successful results are shown.
AB - The paper is concerned with the dynamic positioning control of a moored floating platform model. Moorings are used to maintain the position of the platform against quasi-constant external forces induced by current and wind. The control purpose is to suppress the slow drift oscillation due to drifting force in irregular waves using thrusters so that they do not respond to the linear exciting force in the wave frequency range. Control of motions in the wave frequency region has to be ignored because the amplitude of those motions is smaller than that of the slow drift oscillation and enormous thruster power is needed to control them. The problem was formulated in the framework of H∞ control, was solved using the LMI (linear matrix inequalities) Control Toolbox on Matlab. Model experiments in oblique incident waves were carried out and some successful results are shown.
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M3 - Paper
AN - SCOPUS:0030645098
SP - 641
EP - 648
ER -