Results 81 to 90 of about 50,279 (277)

Navigation of Unmanned Surface Vehicles Using Underwater Geophysical Sensing

IEEE Access, 2020
Underwater geophysical properties can provide useful information for surface navigation, particularly in situations where a global navigation satellite system is unavailable.
Jongdae Jung, Jeonghong Park, Jinwoo Choi, Hyun-Taek Choi   +3 more
doaj   +1 more source

Fuzzy-Logic Based Navigation of Underwater Vehicles

Journal of Intelligent and Robotic Systems, 2004
A fuzzy logic based general purpose modular control architecture is presented for underwater vehicle autonomous navigation, control and collision avoidance. Three levels of fuzzy controllers comprising the sensor fusion module, the collision avoidance module and the motion control module are derived and implemented.
V. Kanakakis(), K. P. Valavanis(), Τσουρβελουδης Νικολαος(http://users.isc.tuc.gr/~ntsourveloudis), Tsourveloudis Nikolaos(http://users.isc.tuc.gr/~ntsourveloudis)   +3 more
openaire   +2 more sources

Improvement of Image Alignment Using Camera Attitude Information [PDF]

, 2001
We discuss a proposed technique for incorporation of information from a variety of sensors in a video imagery processing pipeline. The auxiliary information allows one to simplify computations, effectively reducing the number of independent parameters in
Cutter, Randy G, Jr., Huff, Lloyd C, Rzhanov, Yuri   +2 more
core   +2 more sources

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

Advanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett, Maxwell Hammond, Niloufar Seyfi, Amirreza Fahim Golestaneh, Venanzio Cichella, Caterina Lamuta   +5 more
wiley   +1 more source

A Robust Model Predictive Control Approach for Autonomous Underwater Vehicles Operating in a Constrained workspace

, 2018
This paper presents a novel Nonlinear Model Predictive Control (NMPC) scheme for underwater robotic vehicles operating in a constrained workspace including static obstacles.
Heshmati-alamdari, Shahab, Karras, George C., Kyriakopoulos, Kostas J., Marantos, Panos   +3 more
core   +2 more sources

Magnetic Field Driven Microrobot Based on Hydrogels

Advanced Robotics Research, EarlyView.
Hydrogel‐based magnetic microrobots synergize remote magnetic control with the biocompatibility of flexible hydrogels, emerging as promising tools for minimally invasive biomedicine. This enables remotely controllable, untethered navigation within complex biological microenvironments.
Juncai Song, Yubing Guo
wiley   +1 more source

Unsupervised Learning-Based Optical–Acoustic Fusion Interest Point Detector for AUV Near-Field Exploration of Hydrothermal Areas

Journal of Marine Science and Engineering
The simultaneous localization and mapping (SLAM) technique provides long-term near-seafloor navigation for autonomous underwater vehicles (AUVs). However, the stability of the interest point detector (IPD) remains challenging in the seafloor environment.
Yihui Liu, Yufei Xu, Ziyang Zhang, Lei Wan, Jiyong Li, Yinghao Zhang   +5 more
doaj   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

First AUV and ROV investigation of seismogenic faults in the Alboran Sea (Western Meditarranean) [PDF]

, 2016
In May-June 2015 we carried out the SHAKE cruise on board the RV “Sarmiento de Gamboa” the first in situ investigation using state-of-the-art underwater vehicles, the AUVs “AsterX” and “IdefX” (IFREMER, France) and the ROV “Max Rover” (HCMR, Greece ...
Bartolomé de la Peña, Rafael, Costa, Sergio, Dañobeitia, Juan José, Díez, Susana, Gràcia, Eulàlia, Lo Iacono, Claudio, Perea, Hector, Placaud, Xavier, Rodríguez, Pablo, Smith, Chris, Sánchez, Héctor   +10 more
core  

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source