## Proceedings of the ... International Conference on Offshore Mechanics and Arctic EngineeringAmerican Society of Mechanical Engineers, 1994 - Arctic regions |

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Page 260

01139112 z - aris SIIN - Z y - axis y - axis x - axis x - axis Space Control ) ( 4 ) is used as HAC and each

01139112 z - aris SIIN - Z y - axis y - axis x - axis x - axis Space Control ) ( 4 ) is used as HAC and each

**mode**is ... DVFB ( Direct Velocity Feedback Control ) ( 5 ) is used as LAC and damping of the all**modes**are augmented .Page 261

Sensor Actuator Sensor Actuator Sensor Actuator 11 12 13 14 15 where subscript C shows controlled

Sensor Actuator Sensor Actuator Sensor Actuator 11 12 13 14 15 where subscript C shows controlled

**modes**and R residual**modes**. Nc XM matrix Bc and NR * M matrix BR are given by dividing ØT PL . Number of controlled**modes**Nc must be ...Page 411

The number of

The number of

**modes**required for the modal superposition are generally selected based on the modal mass participation factor . However , a rig model with very stiff substructure and skid base will have difficulty in satisfying this ...### What people are saying - Write a review

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### Contents

OCEAN WAVES AND ENERGY | 1 |

Load Control Method and Its Realization on an OWC Wave Power Converter | 19 |

Nonlinearity in CrestTrough Statistics of Bretschneider Seas | 27 |

Copyright | |

17 other sections not shown

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### Common terms and phrases

amplitude analysis applied approach approximately assumed body boundary buoy calculated Circular coefficient compared components considered correlation corresponding curve cylinder damping derived determined developed direction distribution domain drag drift dynamic effects energy Engineering equation experiments expressed field Figure flow fluid frequency function given height horizontal hydrodynamic increase installation interaction Journal length lift coefficient lift force linear load mass maximum mean measured Mechanics method modes mooring motion nonlinear noted obtained Offshore operation oscillation peak period phase pipe platform potential predicted present pressure problem production random range ratio relative represent respectively response Reynolds number risk second-order shedding shown shows simulation solution spectrum structure surface Table Technology tests theory tower turbulence values velocity vertical vibration vortex water depth wave wind