## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 13, Parts 1-2American Society of Mechanical Engineers, 1994 - Arctic regions |

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Page 260

04/19112 z - aris Sun.2 J - axis y - axis x - aris X - axis Space Control ) ( 4 ) is used as HAC and each

04/19112 z - aris Sun.2 J - axis y - axis x - aris X - axis Space Control ) ( 4 ) is used as HAC and each

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

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

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

**modes**and R residual**modes**. No * M 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 | |

27 other sections not shown

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### Common terms and phrases

amplitude analysis applied approach assessment assumed boundary calculated coefficient compared components considered correlation corresponding costs crack curve cylinder damping depth determined developed direction distribution drag dynamic effects energy Engineering equation estimated expressed extreme factor failure fatigue field Figure flow fluid force frequency function given height important increase initial inspection installation integration interaction joints length lift lift force limit linear load mass maximum mean measured Mechanics method modes mooring motion nonlinear obtained offshore operation oscillation parameters peak performed period phase platform potential predicted present pressure probability problem procedure random range ratio relative reliability represent respectively response risk safety shown shows significant simulation solution statistical stress structure surface Table variables velocity wave wind