Research on Active Heave Compensation for Offshore Rig
Lin Wang, Shuguang Liu · Chinese Control Conference · 2012
Drilling on ocean and drilling on land are very different, the water movement between the drilling platforms and seabed. Therefore, we use the heave compensation system to reduce the relative motion of the drill pipe and the seabed, improve efficiency and safety. This article describes how the winch drum compensation system works. The speed compensation system lack of accurate mathematical model and it has the characteristics of nonlinearity and time varying We choose the parameter self-adjustable fuzzy-PI algorithm here, because it do not need to establish the mathematical model. The results of experiment show that this controller can make the compensation speed be automatically-controlled efficiently, and has a higher control accuracy, better disturbance-resisting ability.