An Effective Control System of Thrust and Moment Modulation for a Dynamically Positioned Vessel
作者:
Cho-Chung Liang, Tso-Liang Teng, Wen-Hui Cheng,
期刊:
Marine Geodesy
(Taylor Available online 1999)
卷期:
Volume 22,
issue 4
页码: 211-227
ISSN:0149-0419
年代: 1999
DOI:10.1080/014904199273353
出版商: Informa UK Ltd
关键词: Dynamic Positioning;Energy;Impulse-momentum Principles;Moment;Thrust
数据来源: Taylor
摘要:
Dynamic positioning (DP) is an operation method whereby the position of a surface vessel is maintained in close proximity to a required position in the horizontal plane through the controlled application of forces and moments generated by purposely installed thrusters. When estimating thrust, this kind of conventional control system often uses many acceleration sensors, velocity sensors, environment sensors, and filters. Usually, these sensors have measured electrical errors. To reduce the number of sensors used and to decrease the measurement errors, this article presents an effective control system for estimating thrust and moment commands, which is based on energy and impulsemomentum principles. Donha and Brinati's example is followed to verify the feasibility of the present control system, which performs semisubmersible platform positioning using an LQG controller, and the results are feasible and economical. A simulated coring vessel marine positioning in southern Taiwan is presented, which can estimate the counterthrust and moment commands, and the complex environmental forces and moments are described. The results can provide a valuable control system for dynamically positioned vessels.
点击下载:
PDF (425KB)
返 回