Results 71 to 80 of about 9,838 (286)

Design and Modeling of an Experimental ROV with Six Degrees of Freedom

Drones, 2021
With the development of underwater technology, it is important to develop a wide range of autonomous and remotely operated underwater vehicles for various tasks.
Aleksey Kabanov, Vadim Kramar, Igor Ermakov   +2 more
doaj   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

Fault-Tolerant Model Predictive Control for Autonomous Underwater Vehicles Considering Unknown Disturbances

Journal of Marine Science and Engineering
This paper presents a fault-tolerant model predictive control approach for cross-rudder autonomous underwater vehicles to achieve heading control, considering rudder stuck faults and unknown disturbances.
Yimin Chen, Shaowen Hao, Jian Gao, Jiarun Wang, Le Li   +4 more
doaj   +1 more source

The Nurturing of Seagliders by the National Oceanographic Partnership Program [PDF]

Oceanography, 2009
The National Oceanographic Partnership Program provided critical support to the development of Seaglider long-range autonomous underwater vehicles. This support enabled: (1) development and integration of chemical and biological sensors, (2) transition ...
Charles C. Eriksen, Mary Jane Perry
doaj  

Control and guidance systems for the navigation of a biomimetic autonomous underwater vehicle [PDF]

, 2011
The field of Autonomous Underwater Vehicles (AUVs) has increased dramatically in size and scope over the past three decades. Application areas for AUVs are numerous and varied, from deep sea exploration, to pipeline surveillance to mine clearing.
Tonello, Alberto
core  

Sensor-based motion control of autonomous underwater vehicles, part II : Robust motion control strategies

, 2020
The first section of this chapter presents an NMPC strategy for underwater robotic vehicles operating under various constraints. The purpose of the controller is to guide the vehicle towards specific way -points.
Kyriakopoulos, K. J.,, Heshmati Alamdari, Shahabodin,, Karras, G. C.,, Marantos, P.,, Bechlioulis, C. P.,   +4 more
core   +1 more source

A Markov Chain state transition approach to establishing critical phases for AUV reliability [PDF]

, 2011
The deployment of complex autonomous underwater platforms for marine science comprises a series of sequential steps. Each step is critical to the success of the mission. In this paper we present a state transition approach, in the form of a Markov chain,
Griffiths, Gwyn, Gwyn Griffiths, Mario Paulo Brito, Brito, Mario   +3 more
core   +1 more source

Astrocytic Phenotypic Switching in Posterior Piriform Cortex Orchestrates Bone Cancer Pain–Depression Comorbidity via Purinergic–Noradrenergic Signaling

Advanced Science, EarlyView.
Bone cancer pain and depression share a common origin: astrocytic A2‐to‐A1 transition in the posterior piriform cortex. This phenotypic shift disrupts the ATP–adenosine–A2AR–norepinephrine axis, simultaneously driving nociceptive and affective dysfunction.
Jiang‐Ping Liu, Jun‐Han Zhang, Zhi‐Xuan Tan, Wei‐Bing Yan, Ya‐Ru Yuan, Yao Liu, Bing‐Di Wei, Meng‐Qi Ding, Zhuo‐Min Fu, Ying Liu, An‐Qi Wang, Lin Ma, Yong‐Hong Li, Er‐Qing Chai, Chao‐Jun Wei   +14 more
wiley   +1 more source

Navigation Control and Signal Processing Methods for Multiple Autonomous Unmanned Systems

Applied Sciences
Autonomous underwater vehicles (AUVs) have been widely deployed in numerous underwater applications, such as biological monitoring, oceanographic surveys, and military underwater surveillance [...]
Haoqian Huang, Bing Wang, Yuan Yang
doaj   +1 more source

Underwater Docking Approach and Homing to Enable Persistent Operation

Frontiers in Robotics and AI, 2021
One of the main limiting factors in deployment of marine robots is the issue of energy sustainability. This is particularly challenging for traditional propeller-driven autonomous underwater vehicles which operate using energy intensive thrusters.
Brian R. Page, Reeve Lambert, Jalil Chavez‐Galaviz, Nina Mahmoudian   +3 more
doaj   +1 more source