Results 271 to 280 of about 149,676 (343)

Autonomous underwater vehicle path planning based on actor-multi-critic reinforcement learning

J. Syst. Control. Eng., 2020
The environmental adaptability of autonomous underwater vehicles is always a problem for its path planning. Although reinforcement learning can improve the environmental adaptability, the slow convergence of reinforcement learning is caused by multi ...
Zhuo Wang, Shiwei Zhang, Xiaoning Feng, Yancheng Sui   +3 more
semanticscholar   +1 more source

Avoidance of underwater cliffs for autonomous underwater vehicles

IEEE/RSJ International Conference on Intelligent Robots and System, 2003
This paper introduces a method aiming to allow underactuated autonomous underwater vehicles navigating in an unknown environment to avoid underwater cliffs. Three electro-acoustic transducers situated in the front part of the vehicle provide bathymetric data.
Creuze, Vincent, Jouvencel, Bruno
openaire   +2 more sources

Launch and Recovery of an Autonomous Underwater Vehicle From a Station-Keeping Unmanned Surface Vehicle

IEEE Journal of Oceanic Engineering, 2019
In-water tests of automated launch and recovery (L&R) of a Hydroid REMUS 100 autonomous underwater vehicle (AUV) from a station-keeping 16-ft wave adaptive modular vehicle unmanned surface vehicle (USV) have been conducted to determine the feasibility of
E. Sarda, M. Dhanak
semanticscholar   +1 more source

Disturbance Observer-Based Fuzzy Adapted S-Surface Controller for Spatial Trajectory Tracking of Autonomous Underwater Vehicle

IEEE Transactions on Intelligent Vehicles, 2019
A new adaptive robust control scheme combining the disturbance-observer-based control (DOBC) with fuzzy adapted S-Surface control is proposed for trajectory tracking control of autonomous underwater vehicle.
G. Lakhekar, L. Waghmare, R. Roy
semanticscholar   +1 more source

An autonomous underwater vehicle for competition

2012 First National Conference for Engineering Sciences (FNCES 2012), 2012
The research of this paper was derived from the small autonomous underwater vehicle (AUV)Raider well performed in the 15th International Underwater Vehicle Competition (IAUVC),San Diego. In order to improve the performance of underwater vehicle, the control system of performance motion played an important role on autonomous underwater vehicles stable ...
Hai Tian, Bo Hu, Can Yu Liu, Guo Chao Xie, Hui Min Luo   +4 more
openaire   +1 more source

Multiple Autonomous Underwater Vehicle Cooperative Localization in Anchor-Free Environments

IEEE Journal of Oceanic Engineering, 2019
The localization of autonomous underwater vehicles (AUVs) in anchor-free environments has always been a difficult problem due to the lack of global positioning systems and absolute references.
Yichen Li, Yiyin Wang, Wenbin Yu, X. Guan   +3 more
semanticscholar   +1 more source

Autonomous Underwater Vehicle Navigation

2016
This chapter surveys the problem of navigation for autonomous underwater vehicles (AUV s). Navigation is critical for the safety and effectiveness of AUV missions. The unavailability of global positioning system (GPS ) underwater makes AUV navigation a challenging research problem.
John J. Leonard, Alexander Bahr
openaire   +1 more source

Autonomous Underwater Vehicle Control

2019 Innovations in Power and Advanced Computing Technologies (i-PACT), 2019
Earth, the third planet from the sun is the only planet on which life is known to exist. Seventy percent of the earth is covered by oceans. These oceans have been playing a very crucial role in transporting of goods even before the road. At the same time it cannot be ignored the possibilities of the negative role of the oceans- a very serious threat to
openaire   +1 more source

From autonomous underwater vehicles (AUVs) to supervised underwater vehicles (SUVs)

Oceans '97. MTS/IEEE Conference Proceedings, 2002
The past fifteen years have seen the development of a new family of unmanned underwater vehicles without umbilical. Initially, those vehicles were operated in the direct vicinity of the mother-ship. With the increase in range and reliability, users are now willing to operate without support vessels.
H. Thomas, E. Petit
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Autonomous Underwater Vehicles (auvs)

2001
Pelagic Open ocean environment. A marine sediment with that fraction derived from the continents indicating deposition from a dilute suspension distributed throughout deep-sea water. Phyllosilicate Layered or sheet silicate mineral, formed by sharing three of the four oxygens in neighboring silicon tetrahedra.
openaire   +1 more source