Results 211 to 220 of about 177,356 (271)

Stability and performance of underwater gliders

2012 Oceans, 2012
Underwater gliders are efficient mobile sensor platforms that can be deployed for months at a time, traveling thousands of kilometers. As with any vehicle, different applications impose different mission requirements which impact vehicle design. In this paper, we consider a conventional glider configuration and investigate the relationship between ...
null Shuangshuang Fan, A. Wolek, C. A. Woolsey   +2 more
openaire   +1 more source

Buoyancy engine developed for underwater gliders

Advanced Robotics, 2016
A buoyancy engine with a swashplate-type axial piston pump was developed. Its oil extrusion and drawing properties under high hydraulic pressure were evaluated. This buoyancy engine is now installed in an underwater glider that will achieve long-term monitoring of ocean environments up to 2100 m depth in a designated area with lower operational costs ...
Kenichi Asakawa, Kensuke Watari, Hidetoshi Ohuchi, Masahiko Nakamura, Tadahiro Hyakudome, Yasuhisa Ishihara   +5 more
openaire   +1 more source

Stabilization and coordination of underwater gliders

Proceedings of the 41st IEEE Conference on Decision and Control, 2002., 2003
An underwater glider is a buoyancy-driven, fixed-wing underwater vehicle that redistributes internal mass to control attitude. We examine the dynamics of a glider restricted to the vertical plane and derive a feedback law that stabilizes steady glide paths.
P. Bhatta, N.E. Leonard
openaire   +1 more source

Modeling of USM underwater glider (USMUG)

International Conference on Electrical, Control and Computer Engineering 2011 (InECCE), 2011
This paper presents the mathematical model of USMUG. The longitudinal plane motion is developed here. A USMUG is considered and the general kinematic and dynamic model for longitudinal plane is derived. The USMUG is designed to be operated in shallow water applications (no more than 30 meters)[1].
null Maziyah Mat Noh, null Mohd Rizal Arshad, Rosmiwati Mohd Mokhtar   +2 more
openaire   +1 more source

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
openaire   +1 more source

Hydrodynamic analyses of typical underwater gliders

Journal of Hydrodynamics, 2015
Abstract The underwater glider changes its weight and the weight distribution through the battery use, to move up and down and forward in the sea. It enjoys many advantages such as a long endurance, and a long operational range with its unique device.
Ya-jun Chen, Hong-xun Chen, Zheng Ma
openaire   +1 more source

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
openaire   +1 more source

Underwater gliders control strategies: A review

2015 10th Asian Control Conference (ASCC), 2015
Underwater Gliders (UGs) are a type of Autonomous Underwater Vehicle (AUV) that uses buoyancy engines, an energy efficient locomotion, primarily for oceanography. In this paper, control strategies for existing underwater gliders are reviewed. A total of 50 papers indexed by Scopus with keywords control and underwater gliders were reviewed from 1989 to ...
Barkat Ullah, Mark Ovinis, Masri B. Baharom, M. Y. Javaid, S. S. Izhar   +4 more
openaire   +1 more source

Current measurements from autonomous underwater gliders

2008 IEEE/OES 9th Working Conference on Current Measurement Technology, 2008
We consider the potential for making current measurements from gliders, and present data from a deployment in early 2007 of 1000 m Slocum electric gliders in the North West Mediterranean Sea. Three types of current measurement are considered. First, by comparing the difference between successive GPS positions, obtained when the glider surfaces, and ...
Merckelbach, L.M., Briggs, R.D., Smeed, D.A., Griffiths, G.   +3 more
openaire   +2 more sources

Underwater gliders as acoustic receiving platforms

The Journal of the Acoustical Society of America, 2011
Acoustic data were collected on a single hydrophone towed by a Webb Slocum glider deployed by Rutgers University, during the shallow water experiment (SW06), on the continental shelf, of New Jersey. The geometry of the experiment provided for adequate recording of the 224 and 400 Hz tomography sources.
Georges A. Dossot, James H. Miller, Gopu R. Potty, Kristy A. Moore, Scott Glenn, James F. Lynch   +5 more
openaire   +1 more source