... cases. The wave frequency motions of the FPSO are inertia driven and is very little affected by the Proceedings of The Thirteenth (2003) International Offshore and Polar Engineering Conference Honolulu, Hawaii, USA, May 25 30, 2003 Copyright © 2003 by The International Society of Offshore and Polar...

... research are carried out in this paper. The results of the calculation and the model test are compared and analyzed. It is shown that with the decrease of the water depth, the wave frequency motions of the FPSO decrease obviously. The research result is expected to be used in optimizing design of the FPSO...

... away from the measurement area. equation kalman filter module spectrum experiment simulation digital filter wave frequency motion mooring system wave spectrum subsea system thruster frequency motion control theory upstream oil & gas frequency component positioning system...

.... The PID controllers used to date tend to respond to the motion in the wave frequency range (sec Fig. 9). It should be noted that it is impossible to resist the wave frequency motion using thrusters because of the enormous amount of power needed. Our control aim is to suppress the slow drift oscillation...

... equation drag force motion simulation stiffness slow motion frequency motion fast motion simulation upstream oil & gas mooring system slow motion amplitude contribution drag coefficient wave frequency motion coefficient amplitude viscous drag force subsea system artificial...