Results 21 to 30 of about 8,349,502 (172)
A robust design methodology suitable for application to one-off products [PDF]
, 1998 Robust design is an activity of fundamental importance when designing large, complex, one-off engineering products. Work is described which is concerned with the application of the theory of design of experiments and stochastic optimization methods to ...
Whitfield, R.I. +3 more
core +4 more sources
Numerical simulation of seakeeping performance of a trimaran small waterplane area center hull
Zhongguo Jianchuan Yanjiu, 2020 [Objectives] Compared with trimarans, the trimaran small waterplane area center hull (TriSWACH)has a larger underwater ship and the waterline surface is greatly reduced,therefore,the seakeeping law of ordinary trimaran is not completely applicable to ...
ZHANG Mingxia, LU Pengcheng, WANG Zhihao
doaj +1 more source
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 Navigation control system is an important navigation building of inland‐river in China. Because of its special semiclosed structure, when the efficiency of the mutation control system is low, the ship system cannot identify the ship, which may endanger the life safety of the crew and cause water traffic accidents.
Ji Qi +5 more
wiley +1 more source
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 The ongoing development of deep‐sea resources has contributed toward the widespread use of dynamic positioning (DP) systems that can operate in arbitrary sea areas without the limitation of operating water depth compared to mooring systems. The second‐order slowly varying forces can be compensated by DP feedback control.
Changde Liu +8 more
wiley +1 more source
Journal of Marine Science and Engineering, 2022 Bow shape has been recognized as an important factor influencing the seakeeping performance and added resistance of ships. This paper presents a numerical comparative study on added resistance and seakeeping of model ships with ‘X-bow’ and a wave ...
Shuling Chen +3 more
doaj +1 more source
IET Control Theory &Applications, Volume 15, Issue 16, Page 2067-2080, November 2021., 2021 Abstract In order to tackle the marine practical constraints, for example the actuator faults, the dead‐zone input, an improved composite adaptive neural control algorithm is proposed for dynamic positioning vehicles in presence of the unknown external disturbances. In the algorithm, the robust neural damping technique is employed to remodel the system
Guoqing Zhang +3 more
wiley +1 more source
Comparative analysis of seakeeping methods: numerical, software simulation and experimental study
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, 2023 The current study case presents a comprehensive comparison of seakeeping analysis methods, utilizing the seakeeping numerical analysis based on Lewis’s form description of a hull, Ansys Aqwa, and experimental data obtained from the towing tank of the ...
Dumitru Silviu Perijoc +1 more
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Seakeeping index as generalized indicator of ship seakeeping performance
Transactions of the Krylov State Research Centre, 2021 Object and purpose of research. This paper discusses the possibility of a ship design process that would consider seakeeping performance to the greatest extent possible. The purpose of this study was to work out a numerical indicator, an index, reflecting all the seakeeping properties relevant for suitability of given ship to its intended operational ...
openaire +1 more source
Research on Ship Meteorological Route Based on A‐Star Algorithm
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 Ship meteorological navigation is based on hydrometeorological data of a certain time scale, considering the ship’s motion characteristics and its own characteristics. First, we provide the best route for the ship and then use real‐time local weather information to correct the route during the ship’s navigation.
Ge Chen, Tao Wu, Zheng Zhou, Xianyong Li
wiley +1 more source
Journal of Marine Science and Engineering, 2021 The present study aims to reduce the pitch motion of an assault amphibious vehicle system in seaways by waterjet impeller revolution rate control. A series of seakeeping tests were performed in a towing tank with a 1/4.5-scale model.
Daehan Lee +6 more
doaj +1 more source