Results 31 to 40 of about 7,210 (250)

An autonomous dynamic collision avoidance control method for unmanned surface vehicle in unknown ocean environment

International Journal of Advanced Robotic Systems, 2019
There are many unknown obstacles in the sea, so the autonomous navigation of unmanned surface vehicle needs to avoid them as soon as possible even under the condition of low control ability of the controller.
Yunsheng Fan, Xiaojie Sun, Guofeng Wang
doaj   +1 more source

Proposed Efficient Design for Unmanned Surface Vehicles

CoRR, 2020
Recently worldwide interest is growing toward commercial, military or scientific Unmanned Surface Vehicle (USV) and hence there is required to develop their guidance, navigation, and control (GNC) systems. Real USVs are a relatively new advent, so the drawbacks of each model will be modified during the time.
Pouyan Asgharian, Zati Hakim Azizul
openaire   +2 more sources

Path‐following algorithms and experiments for an unmanned surface vehicle [PDF]

Journal of Field Robotics, 2009
AbstractThis paper addresses the problem of path following in two‐dimensional space for underactuated unmanned surface vehicles (USVs), defining a set of guidance laws at the kinematic level. The proposed nonlinear Lyapunov‐based control law yields convergence of the path‐following error coordinates to zero.
Marco Bibuli, Gabriele Bruzzone, Massimo Caccia, Lionel Lapierre   +3 more
openaire   +2 more sources

BINOCULAR VISUAL ENVIRONMENT PERCEPTION TECHNOLOGY FOR UNMANNED SURFACE VEHICLE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Binocular vision system is an essential way for target localization in many fields, which has been widely used as payload of unmanned surface vehicles (USV). High resolution cameras, which can provide richer information, are utilized more often on a USV.
Y. Wang, M. Peng, Z. Liu, W. Wan, K. Di, C. Hu, C. Hu, L. Liu, T. Lv, C. Yang   +9 more
doaj   +1 more source

Control of an Unmanned Surface Vehicle With Uncertain Displacement and Drag [PDF]

IEEE Journal of Oceanic Engineering, 2017
Experimental testing of an unmanned surface vehicle (USV) has been performed to evaluate the performance of two low-level controllers when displacement and drag properties are time-varying and uncertain. The USV is a 4.3 meter long, 150 kilogram wave adaptive modular vessel (WAM-V) with an inflatable twin hull configuration and waterjet propulsion ...
Wilhelm B. Klinger, Ivan R. Bertaska, Karl D. von Ellenrieder, M. R. Dhanak   +3 more
openaire   +2 more sources

Collision avoidance planning for unmanned surface vehicle based on eccentric expansion

International Journal of Advanced Robotic Systems, 2019
The International Regulations for Preventing Collisions at Sea (COLREGS) specify certain navigation rules for ships at risk for collision. Theoretically, the safety of unmanned surface vehicles and traffic boats would be guaranteed when they comply with ...
Lifei Song, Zhuo Chen, Zaopeng Dong, Zuquan Xiang, Yunsheng Mao, Yiran Su, Kai Hu   +6 more
doaj   +1 more source

An Unmanned Vessel Path Planning Method for Floating-Waste Cleaning Based on an Improved Ant Colony Algorithm

Journal of Marine Science and Engineering
Efficient cleaning of floating waste using an intelligent unmanned surface vehicle is an important development trend in inland water governance. Path planning is the core of the decision-making module for unmanned surface vehicle waste cleaning and is ...
Yong Li, Changjun Tang, Sen Yan, Ruichen Wang, Dongxu Gao   +4 more
doaj   +1 more source

Operative Unmanned Surface Vessels (USVs): A Review of Market-Ready Solutions

Automation
Unmanned Surface Vehicles (USVs) have emerged as key enablers of autonomous maritime operations, offering innovative solutions across multiple industries, including defense, oceanography, offshore energy, and logistics.
Emerson Martins de Andrade, Joel Sena Sales, Antonio Carlos Fernandes   +2 more
doaj   +1 more source

Prototype Design and Experimental Evaluation of Autonomous Collaborative Communication System for Emerging Maritime Use Cases

Sensors, 2021
Automated systems have been seamlessly integrated into several industries as part of their industrial automation processes. Employing automated systems, such as autonomous vehicles, allows industries to increase productivity, benefit from a wide range of
Jiri Pokorny, Khanh Ma, Salwa Saafi, Jakub Frolka, Jose Villa, Mikhail Gerasimenko, Yevgeni Koucheryavy, Jiri Hosek   +7 more
doaj   +1 more source

Mechanisms of Degradation in Li‐Ion Batteries Under Low Temperature Exposures

Advanced Functional Materials, EarlyView.
Low‐temperature exposures, or freeze‐thaw cycles, are observed to significantly accelerate the degradation of Li‐ion batteries. A combination of electrolyte phase separation and mechanochemical stress leads to reversible and irreversible performance losses.
Mihir Ojha, Shervin Alaei, Jayanth Ramamurthy, Luke P. Lounsbury, Md Mahdi Ul Ishtiaque, Stuart Leland, Niraj P. Atale, Sourav Das, Siddhartha Pathak, Pranav Shrotriya, Steve W. Martin, Todd A. Kingston, Cary L. Pint   +12 more
wiley   +1 more source