Title :
Constant Tension Control of the Anchor Chain of the Windlass under Sea Wind
Author :
Niu, Wangqiang ; Chu, Jianxin ; Gu, Wei
Author_Institution :
Marine Technol. & Control Eng. Key Lab. of Minist. of Commun., Shanghai Maritime Univ., Shanghai
Abstract :
The constant tension control of the anchor chain is important for the safety of the moored ships. The key component of the anchor windlass system is the induction motor which is a multi-variables, coupled nonlinear system, and is difficult to control. To surmount this problem, the inverse system method is introduced to linearize the induction motor into a decoupled linear system, and accordingly linear controllers are designed to complete the control task. The simulation results show this framework is able to keep the anchor chain at desired tension under sea wind.
Keywords :
anchors; control system synthesis; induction motors; linear systems; linearisation techniques; multivariable control systems; nonlinear control systems; ships; anchor windlass system; constant anchor chain tension control; coupled nonlinear system; decoupled linear system; induction motor; inverse system method; linear controller design; linearization; moored ship safety; multivariable system; windlass under sea wind; Automatic control; Communication system control; Control systems; Couplings; Induction motors; Marine safety; Marine technology; Marine vehicles; Nonlinear control systems; Nonlinear systems; Anchor windlass; Constant tension control; Induction motor; Inverse system; Sea wind simulation;
Conference_Titel :
Education Technology and Training, 2008. and 2008 International Workshop on Geoscience and Remote Sensing. ETT and GRS 2008. International Workshop on
Conference_Location :
Shanghai
Print_ISBN :
978-0-7695-3563-0
DOI :
10.1109/ETTandGRS.2008.291
