Dynamic positioning test for removable of ocean observation platform

Dynamic positioning test for removable of ocean observation platform A removable ocean observation platform for horizontal plane dynamic positioning test under the disturbance of ocean currents was completed successfully in the deep-water pool at Harbin Engineering University. The control system for the surge, sway, and yaw is designed according to the characteristics of the observation platform. Sigmoid (S) plane control is used to resist ocean current disturbances by the improved adaptive term. The target heading is chosen based on the theory of weather optimal positioning control (WOPC) such that when the platform maintains the target heading, the energy consumption of the propulsion system is minimal. A fixed-output time control approach is proposed for the platform heading control to avoid the effect of thruster dead zone. Then, a grouping strategy based on the analysis of the main disturbance is introduced for thrust allocation. The effectiveness of the proposed control scheme and thrust allocation method is illustrated by pool trials. Several effective suggestions are proposed for the design of dynamic positioning systems and the positioning control of the removable ocean observation platform. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ocean Engineering Elsevier

Dynamic positioning test for removable of ocean observation platform

Loading next page...
 
/lp/elsevier/dynamic-positioning-test-for-removable-of-ocean-observation-platform-XnTag4h2Vp
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0029-8018
eISSN
1873-5258
D.O.I.
10.1016/j.oceaneng.2018.01.079
Publisher site
See Article on Publisher Site

Abstract

A removable ocean observation platform for horizontal plane dynamic positioning test under the disturbance of ocean currents was completed successfully in the deep-water pool at Harbin Engineering University. The control system for the surge, sway, and yaw is designed according to the characteristics of the observation platform. Sigmoid (S) plane control is used to resist ocean current disturbances by the improved adaptive term. The target heading is chosen based on the theory of weather optimal positioning control (WOPC) such that when the platform maintains the target heading, the energy consumption of the propulsion system is minimal. A fixed-output time control approach is proposed for the platform heading control to avoid the effect of thruster dead zone. Then, a grouping strategy based on the analysis of the main disturbance is introduced for thrust allocation. The effectiveness of the proposed control scheme and thrust allocation method is illustrated by pool trials. Several effective suggestions are proposed for the design of dynamic positioning systems and the positioning control of the removable ocean observation platform.

Journal

Ocean EngineeringElsevier

Published: Apr 1, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off