Zobrazeno 1 - 10
of 12
pro vyhledávání: '"James Millan"'
Publikováno v:
Day 2 Tue, November 06, 2018.
This paper describes the results of model tests carried out in ice and open water conditions to evaluate performance of the United States Coast Guard (USCG) Heavy Polar Icebreaker (HPIB) indicative design. The resistance, propulsion and manoeuvring p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f51e9250f123362f21dc56f914046cc
https://doi.org/10.4043/29106-ms
https://doi.org/10.4043/29106-ms
Autor:
David Millan, Shameem Islam, Jeffrey Brown, Jungyong Wang, Michael Lau, Robert Gash, James Millan Ocean
The stationkeeping performance prediction of a Dynamic Positioning (DP) vessel greatly depends on the accurate modelling of the ice forces, which in turn depends on managed ice field characteristics (ice concentration, floe thickness, floe size, ice
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa7575fd53463c487f03b8ca6e0108a2
https://nrc-publications.canada.ca/eng/view/object/?id=ee5c51f2-34cd-4017-b144-2a645403aee0
https://nrc-publications.canada.ca/eng/view/object/?id=ee5c51f2-34cd-4017-b144-2a645403aee0
The objective of this paper is to present an update of various research activities of a multi-year research and development project aiming at developing dynamic positioning (DP) system technologies specifically for ice-rich environments. Since the be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bd74121e5becd033e0d89e92c5b6eab
https://nrc-publications.canada.ca/eng/view/object/?id=f9024e34-0ea9-4c8d-bf16-a3e4917bc1ff
https://nrc-publications.canada.ca/eng/view/object/?id=f9024e34-0ea9-4c8d-bf16-a3e4917bc1ff
Stationkeeping in managed ice using dynamic positioning (DP) control system has been an area of great interest over the past few years. The stationkeeping performance of a DP vessel depends on the modelling accuracy of the ice forces, which in turn d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::083feb328b8255ae84a14e61d8a9a059
https://doi.org/10.4043/27430-ms
https://doi.org/10.4043/27430-ms
Autor:
Siu O’Young, James Millan
Publikováno v:
Control Engineering Practice. 16:1004-1021
This paper describes a technique that automates the synthesis of supervisory controllers for plants that have a mixture of discrete and continuous dynamics, that is, plants with hybrid dynamics. The control technique utilizes embedded simulations to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::612326b259ee845e322e0398baea06be
https://doi.org/10.1016/j.conengprac.2007.11.007
https://doi.org/10.1016/j.conengprac.2007.11.007
Autor:
James Millan, Siu O’Young
Publikováno v:
ADHS
This paper describes a technique for synthesizing controllers for hybrid plants. Our modeling framework allows for the efficient online construction of limited lookahead discrete abstractions of the nonlinear continuous dynamics of the plant model. D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e76368f2a5d34a7a4a0bf603b26aa357
https://doi.org/10.3182/20060607-3-it-3902.00073
https://doi.org/10.3182/20060607-3-it-3902.00073
Publikováno v:
2014 Oceans - St. John's.
A pilot project was launched to monitor vessel performance and to explore ways to reduce fuel consumption. A prototype Vessel Performance Monitoring and Analysis System (VPMAS) was used to collect information over a three week period. The project obj
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26c2a81fd1061718dbbfcd818d6bd02a
https://doi.org/10.1109/oceans.2014.7003300
https://doi.org/10.1109/oceans.2014.7003300
Publikováno v:
Day 2 Tue, July 29, 2014.
Numerical simulations are carried out to examine the interaction of a managed ice cover with a drillship. Station keeping is maintained using a mooring system and Thruster-Assisted Mooring. The ice model is based on solving the momentum and constitut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e4a2e2f46c3e29d0a09bed3f171b4b6
https://doi.org/10.5957/icetech-2014-137
https://doi.org/10.5957/icetech-2014-137
Publikováno v:
Volume 5: Ocean Engineering.
This paper presents a numerical station-keeping simulation in waves (regular and irregular waves) for a simplified FPSO with two DP systems. The main difference of the simulation with these two DP systems was that the first DP system (called MOT DP i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c9e40626d3699b1bd2422520d976dda
https://doi.org/10.1115/omae2013-10067
https://doi.org/10.1115/omae2013-10067
Publikováno v:
Volume 1: Offshore Technology.
Utilization of Dynamic Positioning (DP) systems for offshore exploration and production of hydrocarbons is increasing due to the need to exploit deeper water depths, where mooring becomes less feasible. In conducting analysis or predictions for DP Sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70f7efdd6b03819a5281e82098090407
https://doi.org/10.1115/omae2012-84069
https://doi.org/10.1115/omae2012-84069