Portable Dynamic Positioning Control System on A Barge in Short-Crested Waves Using the Neural Network Algorithm  

作　　者：FANG Ming-chung LEE Zi-yi 

机构地区：[1]Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University

出　　处：《China Ocean Engineering》2013年第4期469-480,共12页中国海洋工程（英文版）

基　　金：financially supported by the Science Council Taiwan (Grant No. NSC-96-2221-E006-329-MY3);partly supported by the Research Center of Ocean Environment and Technology NCKU

摘　　要：This paper develops a nonlinear mathematical model to simulate the dynamic motion behavior of the barge equipped with the portable outboard Dynamic Positioning （DP） system in short-crested waves. The self-tuning Proportional- Derivative （PD） controller based on the neural network algorithm is applied to control the thrusters for optimal adjustment of the barge position in waves. In addition to the wave, the current, the wind and the nonlinear drift force are also considered in the calculations. The time domain simulations for the six-degree-of-freedom motions of the barge with the DP system are solved by the 4th order Runge-Kutta method which can compromise the efficiency and the accuracy of the simulations. The technique of the portable alternative DP system developed here can serve as a practical tool to assist those ships without being equipped with the DP facility while the dynamic positioning missions are needed.This paper develops a nonlinear mathematical model to simulate the dynamic motion behavior of the barge equipped with the portable outboard Dynamic Positioning （DP） system in short-crested waves. The self-tuning Proportional- Derivative （PD） controller based on the neural network algorithm is applied to control the thrusters for optimal adjustment of the barge position in waves. In addition to the wave, the current, the wind and the nonlinear drift force are also considered in the calculations. The time domain simulations for the six-degree-of-freedom motions of the barge with the DP system are solved by the 4th order Runge-Kutta method which can compromise the efficiency and the accuracy of the simulations. The technique of the portable alternative DP system developed here can serve as a practical tool to assist those ships without being equipped with the DP facility while the dynamic positioning missions are needed.

关 键 词：neural network PD controller dynamic positioning short-crested wave 

分 类 号：U665[交通运输工程—船舶及航道工程]