Results 81 to 90 of about 50,488 (298)

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

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Oceanus. [PDF]

, 1984
v. 28, no.
Woods Hole Oceanographic Institution.
core   +4 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

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

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

Real-time Magnetometer Disturbance Estimation via Online Nonlinear Programming

, 2019
Magnetometer is a significant sensor for integrated navigation. However, it suffers from many kinds of unknown dynamic magnetic disturbances. We study the problem of online estimating such disturbances via a nonlinear optimization aided by intermediate ...
Wu, Jin
core   +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

From Machinery to Biology: A Review on Mapless Autonomous Underwater Navigation

Journal of Marine Science and Engineering
Autonomous navigation in unknown; map-free environments is a core requirement for advanced robotics. While significant breakthroughs have been achieved in terrestrial scenarios, extending this capability to the unstructured, dynamic, and harsh underwater
Wenxi Zhu, Weicheng Cui
doaj   +1 more source