Results 181 to 190 of about 137,065 (217)

Motion Simulation of an Underwater Glider

2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics, 2015
Underwater glider is a new type of autonomous underwater vehicle driven by gravity. In order to study the relationship between the motion parameters and control variable of the underwater glider, solve the fluctuation problem of pitching angle and attack angle in the process of attitude changing, simulation via the software Mat lab is performed based ...
Yu Ma, Xiao-Wei Liu, Ping Ou
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The autonomous underwater glider "Spray"

IEEE Journal of Oceanic Engineering, 2001
A small (50-kg, 2-m long) underwater vehicle with operating speeds of 20-30 cm/s and ranges up to 6000 km has been developed and field tested. The vehicle is essentially an autonomous profiling float that uses a buoyancy engine to cycle vertically and wings to glide horizontally while moving up and down.
J. Sherman, R.E. Davis, W.B. Owens, J. Valdes   +3 more
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Underwater Gliders for Ocean Research

Marine Technology Society Journal, 2004
Underwater gliders are autonomous vehicles that profile vertically by controlling buoyancy and move horizontally on wings. Gliders are reviewed, from their conception by Henry Stommel as an extension of autonomous profiling floats, through their development in three models, and including their first deployments singly and in numbers.
Daniel L. Rudnick, Russ E. Davis, Charles C. Eriksen, David M. Fratantoni, Mary Jane Perry   +4 more
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Ocean Research Enabled by Underwater Gliders

Annual Review of Marine Science, 2016
Underwater gliders are autonomous underwater vehicles that profile vertically by changing their buoyancy and use wings to move horizontally. Gliders are useful for sustained observation at relatively fine horizontal scales, especially to connect the coastal and open ocean. In this review, research topics are grouped by time and length scales.
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Design of a kind of underwater glider

2015 12th IEEE International Conference on Electronic Measurement & Instruments (ICEMI), 2015
Underwater glider, as a combination product of buoy technology and underwater vehicle, has broad application prospect in marine scientific research, environmental monitoring, resource exploration and military reconnaissance etc, because of the advantages of low-noise, long range, long duration and cost-efficiency.
null Liu Xiaowei, null Ma Yu, null Ou Ping   +2 more
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Dynamics of underwater gliders in currents

Ocean Engineering, 2014
Although underwater vehicles often operate in time-varying, nonuniform currents, the effect of flow gradients on vehicle dynamics is typically ignored in motion models used for control and estimation. Forces and moments due to a nonuniform flow field are strongest when apparent mass effects are important and flight paths are most sensitive to these ...
Shuangshuang Fan, Craig A. Woolsey
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Discrete Decentralized Supervisory Control for Underwater Glider

Sixth International Conference on Intelligent Systems Design and Applications, 2006
In order to independently undertake complex missions in unstructured and unknown undersea environment, artificial intelligence techniques are needed to provide underwater glider with ability of active autonomy. Based on the RW (Ramadge & Wonham) supervisory control theory of discrete event dynamic system (DEDS), a three-level intelligence control ...
Yu Zhang 0030, Liang Zhang, Tiejun Zhao
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Surrogate Models for Shape Optimization of Underwater Glider

2009 International Conference on Computer Modeling and Simulation, 2009
Design of experiments and surrogate models method facilitating much of today’s engineering design and optimization. In this paper we systematically compare several experimental design types and surrogate modeling techniques in terms of their capability to generate accurate approximations for the shape optimization of underwater gliders.
Haitao Gu, Lin Yang, Zhiqiang Hu, Jiancheng Yu   +3 more
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Design and Analysis of a Novel Underwater Glider - RoBuoy

2018 IEEE International Conference on Robotics and Automation (ICRA), 2018
Underwater gliders are special class of autonomous underwater vehicles (AUVs) proven to be power efficient with better range and endurance compared to the conventional underwater robots. Most of the existing underwater gliders use ‘change of mass’ based variable buoyancy (VB) method in which the overall system architecture and construction are complex.
Thiyagarajan Ranganathan, Sundaravalli Aravazhi, Sambit Mishra, Asokan Thondiyath   +3 more
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Research on the Hierarchical Supervisory Control of Underwater Glider

2006 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2006
An underwater glider is a buoyancy-propelled and fixed-wing vehicle with attitude controlled completely by means of internal mass redistribution. In order to independently accomplish complex missions in unstructured and unknown oceanic environment, intelligent control system is needed to provide the underwater glider with the ability of active autonomy.
Yu Zhang, Jiaping Tian, Donghai Su, Shijie Wang   +3 more
openaire   +2 more sources