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Structural Engineering and Mechanics
  Volume 31, Number 2, January30 2009 , pages 153-162
DOI: https://doi.org/10.12989/sem.2009.31.2.153
 


Application of lattice probabilistic neural network for active response control of offshore structures
Dong Hyawn Kim, Dookie Kim

 
Abstract
    The reduction of the dynamic response of an offshore structure subjected to wind-generated random ocean waves is of extreme significance in the aspects of serviceability, fatigue life and safety of the structure. In this study, a new neuro-control scheme is applied to the vibration control of a fixed offshore platform under random wave loads to examine the applicability of the proposed method. It is called the Lattice Probabilistic Neural Network (LPNN), as it utilizes lattice pattern of state vectors as the training data of PNN. When control results of the LPNN are compared with those of the NN and PNN, LPNN showed better performance in effectively suppressing the structural responses in a shorter computational time.
 
Key Words
    active control; probabilistic neural network; lattice; training pattern; wave load.
 
Address
Dong Hyawn Kim; Department of Ocean System Engineering, Kunsan National University, Kunsan, Jeonbuk 573-701, Korea
Dookie Kim
 

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