Title :
Feedforward and feedback control for nonlinear systems of offshore platforms
Author :
Liang, Yan-Jun ; Tang, Gong-You ; Zhang, Cheng-Ming
Author_Institution :
Coll. of Inf. Sci. & Eng., Ocean Univ. of China, Qingdao, China
Abstract :
The vibration control problem of offshore jacket platforms is studied. The model of lumped masses offshore platforms with nonlinear interactions of the pile-soil affected by the wave load disturbances is established. The wave load disturbances are estimated by using the Morison equation. Based on the successive approximation approach, we propose a feedforward and feedback vibration control scheme for the nonlinear offshore jacket platforms. Numerical simulations illustrate the effectiveness of the proposed approach.
Keywords :
approximation theory; feedback; feedforward; nonlinear control systems; offshore installations; power generation control; vibration control; Morison equation; approximation approach; feedforward-feedback control; lumped masses offshore platforms; nonlinear interactions; nonlinear systems; numerical simulations; offshore jacket platforms; vibration control problem; wave load disturbances; Damping; Earthquakes; Feedback control; Ice; Nonlinear equations; Nonlinear systems; Optimal control; Shock absorbers; Steel; Vibration control; Feedforward and feedback Control; Nonlinear systems; Offshore platforms;
Conference_Titel :
Control and Decision Conference (CCDC), 2010 Chinese
Conference_Location :
Xuzhou
Print_ISBN :
978-1-4244-5181-4
Electronic_ISBN :
978-1-4244-5182-1
DOI :
10.1109/CCDC.2010.5498071
