Proceedings of the ... International Conference on Offshore Mechanics and Arctic EngineeringAmerican Society of Mechanical Engineers, 1994 - Arctic regions |
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Page 260
01119112 z - aris SUD.2 y - axis y - axis x - axis 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 .
01119112 z - aris SUD.2 y - axis y - axis x - axis 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 Sensor Actuator 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 $ T PL . Number of controlled modes Nc must be ...
Sensor Actuator Sensor Actuator Sensor Actuator 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 $ T PL . Number of controlled modes Nc must be ...
Page 411
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 ...
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 ...
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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 | |
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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 tests theory tower turbulence values velocity vertical vibration vortex water depth wave wind