Results 31 to 40 of about 16,861 (313)

A Novel Thermal Tactile Sensor Based on Micro Thermoelectric Generator for Underwater Flow Direction Perception

Sensors, 2023
Underwater vehicles can operate independently in the exploitation of marine resources. However, water flow disturbance is one of the challenges underwater vehicles must face.
Changxin Liu, Nanxi Chen, Guangyi Xing, Runhe Chen, Tong Shao, Baichuan Shan, Yilin Pan, Minyi Xu   +7 more
doaj   +1 more source

Model predictive control of a hybrid autonomous underwater vehicle with experimental verification [PDF]

, 2014
In this work model predictive control is used to provide transit and hover capabilities for an autonomous underwater vehicle where the description of the system dynamics used include terms measured experimentally.
Bodles, Kenneth, Evans, D.W., Evans, Derek W., Harris, C., Turnock, S.R., Rogers, E., Steenson, L.V., Phillips, A.B., Wang, L., Bodles, K., Furlong, M.E., Wang, Liuping   +11 more
core   +1 more source

Prescribed Performance Formation Tracking Control for Underactuated AUVs under Time-Varying Communication Delays

Journal of Marine Science and Engineering
Achieving formation tracking control of underactuated autonomous underwater vehicles (AUVs) under communication delays presents a significant challenge. To address this challenge, a distributed prescribed performance control protocol based on a real-time
Haitian Zhang, Yanqing Jiang, Rui Gao, Hang Li, Ao Li   +4 more
doaj   +1 more source

Underwater broadband sound insulation with chiral spiral structures

AIP Advances, 2020
Low-frequency noise has been a long-standing issue in the context of a complex underwater environment. While theory related to low-frequency sound insulation in air has been developed, systematic research on underwater sound insulation has not yet been ...
Huilan Wu, Chengpeng Hao, Han Zhang
doaj   +1 more source

Virtual Underwater Datasets for Autonomous Inspections

Journal of Marine Science and Engineering, 2022
Underwater Vehicles have become more sophisticated, driven by the off-shore sector and the scientific community’s rapid advancements in underwater operations.
Ioannis Polymenis, Maryam Haroutunian, Rose Norman, David Trodden   +3 more
doaj   +1 more source

Research on Dynamic Simulation of Underwater Vehicle Manipulator Systems [PDF]

, 2008
Li Q, Zhang Q, Wang X. Research on Dynamic Simulation of Underwater Vehicle Manipulator Systems.
Qifeng Zhang, Zhang, Qifeng, Qiang Li, Li, Qiang ; https://orcid.org/, Wang, Xiaohui, Xiaohui Wang   +5 more
core   +2 more sources

Time-Optimal Trajectory Design for Heading Motion of the Underwater Vehicle

Journal of Marine Science and Engineering, 2023
Underwater vehicles are a powerful tool that can assist oceanologists with measuring the state of oceans on a large scale. The heading control is essential for the underwater vehicle to follow a specific path.
Ngoc-Duc Nguyen, Mai The Vu, Phi Nguyen, Jiafeng Huang, Dong-Wook Jung, Hyunjoon Cho, Phan Huy Nam Anh, Hyeung-Sik Choi   +7 more
doaj   +1 more source

A Side-Scan Sonar Seabed Target Detection Algorithm Based on YOLOv8-RDE

International Journal of Distributed Sensor Networks
Side-scan sonar target detection is crucial in underwater exploration, but traditional algorithms suffer from inaccurate positioning, slow detection, and poor model generalization.
Haoming Ji, Daqi Zhu, Mingzhi Chen
doaj   +1 more source

A Sensor System for the Navigation of an Underwater Vehicle

The International Journal of Robotics Research, 1999
A sensor system for an underwater vehicle is described. The vehicle is equipped with inclinometers, gyroscopes, a magnetometer, a pressure gauge, and a sonar system. The sensor models used for the inclinometers and gyroscopes are straightforward; however, the magnetometer can be corrupted by variations in the earth’s field caused by: external objects ...
Smith, R, Frost, A, Probert, P
openaire   +2 more sources

Sensor-based motion control of autonomous underwater vehicles, part I : Modeling and low-complexity state estimation [PDF]

, 2020
The goal of this chapter is to provide the reader with the appropriate analytical methods, in order to derive a simple yet accurate vehicle model, design a state estimation algorithm that could be easily integrated into the embedded system framework of ...
Karras, G. C., Kyriakopoulos, K. J., Bechlioulis, C. P., Heshmati Alamdari, Shahabodin,, Marantos, P.   +4 more
core   +1 more source