Results 171 to 180 of about 1,847 (222)
Quantifying coastal freshwater extremes during unprecedented rainfall using long timeseries multi-platform salinity observations. [PDF]
Nat CommunMalan N +3 more
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An Electro-Magnetic Log (EML) Integrated Navigation Algorithm Based on Hidden Markov Model (HMM) and Cross-Noise Linear Kalman Filter. [PDF]
Sensors (Basel)Zhang H +6 more
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IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
Underwater gliders are buoyancy-driven devices; they alternately reduce and expand displaced volume to dive and climb through the ocean. Gliders carry wings and control their pitch attitude to effectuate a horizontal speed component through the ocean. They turn by rolling their wings or by use of a rudder.
Eric O. Rogers +4 more
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Underwater gliders are buoyancy-driven devices; they alternately reduce and expand displaced volume to dive and climb through the ocean. Gliders carry wings and control their pitch attitude to effectuate a horizontal speed component through the ocean. They turn by rolling their wings or by use of a rudder.
Eric O. Rogers +4 more
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Underwater glider motion control
2008 47th IEEE Conference on Decision and Control, 2008This paper describes an underwater glider motion control system intended to enhance locomotive efficiency by reducing the energy expended by vehicle guidance. In previous work, the authors derived an approximate analytical expression for steady turning motion by applying regular perturbation theory to a realistic vehicle model.
Nina Mahmoudian, Craig A. Woolsey
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Stabilization and coordination of underwater gliders
Proceedings of the 41st IEEE Conference on Decision and Control, 2002., 2003An 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.
Pradeep Bhatta, Naomi Ehrich Leonard
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Steering control for underwater gliders
Frontiers of Information Technology & Electronic Engineering, 2017Steering control for an autonomous underwater glider (AUG) is very challenging due to its changing dynamic characteristics such as payload and shape. A good choice to solve this problem is online system identification via in-field trials to capture current dynamic characteristics for control law reconfiguration. Hence, an online polynomial estimator is
You Liu +3 more
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Developing an underwater glider for educational purposes
2013 IEEE International Conference on Robotics and Automation, 2013Buoyancy-driven underwater gliders (UGs) have proven to be quite effective for long-range, long-term oceanographic sampling. However, current off-the-shelf UGs are large, heavy, expensive, and difficult to modify, both in hardware and software, which prevents their frequent use for lake observations and limits researchers' ability to perform multi ...
Byrel Mitchell +2 more
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Buoyancy engine developed for underwater gliders
Advanced Robotics, 2016A 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 +5 more
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Negotiation of the Multi-underwater Glider System
First International Conference on Innovative Computing, Information and Control - Volume I (ICICIC'06), 2006This paper presents the theoretical development of the negotiation of a multi-underwater glider problem, where glider is called agent. Negotiation is a key point in multi-agent (multi-underwater glider) system, which aims to accomplish cooperation and coordination.
Shaoxuan Ren, Yu Zhang, Changzheng Chen
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Lagrangian Modelling of an Underwater Wave Glider
Ship Technology Research, 2012AbstractThis paper introduces a control-oriented modelling approach for a hybrid autonomous underwater vehicle, the Underwater Wave Glider. The vehicle can accomplish both surface and underwater tasks by changing its shape: it can operate as a wave glider at the sea surface, exploiting wave and solar energy to recharge the onboard batteries, and switch
CAITI, ANDREA +4 more
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