NDLI: Adaptive dynamic positioning control for accommodation vessels with multiple constraints

Content Provider	IET Digital Library
Author	Tu, Fangwen Ge, Shuzhi Sam Choo, Yoo Sang Hang, Chang Chieh
Abstract	In this study, adaptive constrained control with non-linear adaptive filter is proposed for the dynamic positioning of an accommodation vessel (AV) in deep water area. To reduce wear and tear on the thrusters due to the high frequency (HF) wave-induced motion, a non-linear neural network filter is designed to estimate the low frequency motion by filtering out the HF motion in the presence of parametric uncertainties. The proposed filter is able to handle the variation of sea conditions by adaptively adjusting the wave frequency components. Based on the designed filter, an adaptive neural control with input and output constraints is developed to tackle the non-linearities of control signals and guarantee a safe operation. The semi-global uniform boundedness of all the closed-loop signals is investigated through rigorous Lyapunov analysis. A set of simulation studies are conducted on a typical AV model to demonstrate the effectiveness of the proposed filter and control.
Starting Page	329
Ending Page	340
Page Count	12
ISSN	17518644
Volume Number	11
e-ISSN	17518652
Issue Number	Issue 3, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/11/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2016.0766
Journal	IET Control Theory & Applications
Publisher Date	2016-11-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Accommodation Vessels Adaptive Constrained Control Adaptive Control Adaptive Dynamic Positioning Control Adaptive Filter Adaptive Neural Control Closed Loop System Closed-loop Signal Control Signal Nonlinearities Deep Water Area HF Motion High Frequency Wave-induced Motion Lyapunov Analysis Lyapunov Method Marine System Control Marine Vehicle Neurocontrol Neurocontrollers Nonlinear Adaptive Filter Nonlinear Filter Nonlinear Neural Network Filter Parametric Uncertainty Position Control Pressure Vessels Self Adjusting Control System Semiglobal Uniform Boundedness Spatial Variables Control Stability in Control Theory Thrusters Wave Frequency Component Wear Wear And Tear
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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