Results 71 to 80 of about 2,479 (237)

Design, construction, and operation of an unmanned underwater vehicle [PDF]

, 2009
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.This electronic version was submitted by the student author.
Owens, Dylan
core  

Using acoustic sensor technologies to create a more terrain capable unmanned ground vehicle [PDF]

, 2009
Unmanned Ground Vehicle’s (UGV) have to cope with the most complex range of dynamic and variable obstacles and therefore need to be highly intelligent in order to cope with navigating in such a cluttered environment.
Erbil, Mehmet Ali, Karamanoglu, Mehmet, Odedra, Siddharth, Prior, Stephen D., Shen, Siu-Tsen   +4 more
core   +1 more source

Reinforcement learning‐based finite‐time cross‐media tracking control for a cross‐media vehicle under unknown dynamics and disturbances

IET Control Theory &Applications, Volume 18, Issue 11, Page 1475-1490, July 2024.
A reinforcement learning framework is constructed to handle the unknown dynamics and environmental disturbances and achieve the optimal control performance. Combining the reinforcement learning technique, we develop the reinforcement learning‐based finite‐time control strategy without the singularity issue, which exhibits good robustness and provides ...
Shichong Wu, Lingli Xie, Jun Xian, Fei Liao, Wenhua Wu, Mingqing Lu, Xian Yi   +6 more
wiley   +1 more source

Effectiveness Evaluation of Intelligent UUV Target Recognition and Counter-contermeasure Based on TOPSIS with Weighting Combination

水下无人系统学报
At present, the operational environment for underwater acoustic contermeasure is increasingly complicated. The emphasis on future underwater warfare is mainly focused on the contermeasure and counter-contermeasure of intelligent underwater unmanned ...
Xu WANG, Jinming LI, Zhaoyong MAO, Wenjun DING   +3 more
doaj   +1 more source

Formation control of unmanned underwater vehicles using local sensing means in absence of follower position information

International Journal of Advanced Robotic Systems, 2021
Formation control is one of the essential problems in multi-unmanned underwater vehicle (UUV) coordination. In this article, a practically oriented UUV formation control structure and method are proposed for the problem of large communication in leader ...
Zheping Yan, Da Xu, Tao Chen, Jiajia Zhou   +3 more
doaj   +1 more source

Next generation mine countermeasures for the very shallow water zone in support of amphibious operations [PDF]

, 2012
This report describes system engineering efforts exploring next generation mine countermeasure (MCM) systems to satisfy high priority capability gaps in the Very Shallow Water (VSW) zone in support of amphibious operations.
Brown, Thomas, Damiano, Jonathan, Moore, Ryan, Morgan, Brett, Nguyen, Vincent, Opheim, Thomas, Ringwald, Timothy, Roman, William, Shivraj, Jhala, Turk, John, Ushkevich, Christina, Wampler, Kenneth, Welsh, Paul, Williams, Heather   +13 more
core   +2 more sources

A Soft Robotic Morphing Wing for Unmanned Underwater Vehicles

Advanced Intelligent Systems, Volume 6, Issue 6, June 2024.
This study presents the design and hydrodynamic characterization of a soft wing for implementation on underwater gliders. Through hydraulic actuation, the soft wing deforms and adjusts its lift‐to‐drag ratio, which ranges from −70% to +10% with respect to a rigid wing.
Andrea Giordano, Liam Achenbach, Daniel Lenggenhager, Fabian Wiesemüller, Roger Vonbank, Claudio Mucignat, André Tristany Farinha, Pham Huy Nguyen, Robert Katzschmann, Sophie F Armanini, Ivan Lunati, Sukho Song, Mirko Kovač   +12 more
wiley   +1 more source

Experimental Study and Numerical Simulation of Radiated Noise from Unmanned Underwater Vehicle

Polish Maritime Research
This paper focuses on the research of the radiation noise of underwater unmanned vehicle (UUV), which is one of the most important indicators for evaluating the performance of underwater unmanned equipment.
Zhang Chunyu, Xu Qiang, Yang He, Peng Zilong, Li Jiangqiao, Zhou Jialiang   +5 more
doaj   +1 more source

Does Bistability Improve Swimming Performance in Robotic Fish?

Advanced Intelligent Systems, Volume 6, Issue 6, June 2024.
This study asks whether bistability is a fundamentally useful feature of swimming mechanisms, or simply a tool to overcome actuation limitations. It quantifies the effects of introducing bistability into a simple bioinspired propulsion system with variable morphology.
Tayler Bambrick, Andrew Viquerat, Robert Siddall   +2 more
wiley   +1 more source

Autonomous Underwater Pipe Damage Detection Positioning and Pipe Line Tracking Experiment with Unmanned Underwater Vehicle

Journal of Marine Science and Engineering
Underwater natural gas pipelines constitute critical infrastructure for energy transportation. Any damage or leakage in these pipelines poses serious security risks, directly threatening marine and lake ecosystems, and potentially causing operational ...
Seda Karadeniz Kartal, Recep Fatih Cantekin   +1 more
doaj   +1 more source