Blar i ODA Open Digital Archive på forfatter "Alcocer, Alex"
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Achieving Connectivity between Wide Areas Through Self-Organising Robot Swarms using Embodied Evolution
Erik Aaron, Hansen; Nichele, Stefano; Yazidi, Anis; Haugerud, Hårek; Abolpour Mofrad, Asieh; Alcocer, Alex (Chapter; Peer reviewed, 2018)Abruptions to the communication infrastructuremight occur occasionally, where manual intervention by dedi-cated personnel is needed to fix the interruptions, restoring com-munication abilities. However, sometimes this can ... -
A Deep Learning Approach To Dead-Reckoning Navigation For Autonomous Underwater Vehicles With Limited Sensor Payloads
Saksvik, Ivar; Alcocer, Alex; Hassani, Vahid (OCEANS;OCEANS 2021: San Diego – Porto, Conference object, 2022)This paper presents a deep learning approach to aid dead-reckoning (DR) navigation using a limited sensor suite. A Recurrent Neural Network (RNN) was developed to predict the relative horizontal velocities of an Autonomous ... -
Design and Testing of a Composite Pressure Hull for Deep Autonomous Underwater Vehicles.
Elkolali, Moustafa; Alcocer, Alex (IEEE Access;Volume: 10, Peer reviewed; Journal article, 2022-08-16)This paper outlines the design and testing process of the hull of a deep small Autonomous Underwater Vehicle (AUV), rated at 2000m depth. Many existing AUV pressure housings use aluminum or other isotropic traditional ... -
Design and Testing of a Miniature Variable Buoyancy System for Underwater Vehicles
Elkolali, Moustafa; Al-Tawil, Ahmed; Alcocer, Alex (IEEE Access;Volume 10, 2022, Peer reviewed; Journal article, 2022-04-18)Buoyancy-driven underwater vehicles are key tools for obtaining data from the ocean. Underwater gliders and profiling floats, equipped with sensors, provide crucial information on ocean processes and climate changes. The ... -
Development and Control of a Low Cost Solar Powered Autonomous Surface Vessel for Water Quality Investigation and Monitoring
Radicke, Jan-Philip (Master thesis, 2023)This thesis presents an unmanned surface vessel (USV) which was designed with the goal of providing a low-cost, highly accessible, and autonomous platform for water quality inspection and monitoring in coastal areas and ... -
Experiences and Trends in Control Education: A HiOA/USN Perspective
Komulainen, Tiina M.; Alcocer, Alex; Haugen, Finn (Chapter; Peer reviewed; Chapter, 2016)Global trends in higher education including e-learning, massive open online courses, and new teaching methods have positively affected control education. Control course content has evolved due to changes in industrial ... -
Experiences and trends in control education: a HIOA/USN perspective
Komulainen, Tiina M.; Alcocer, Alex; Haugen, Finn (Chapter; Peer reviewed; Chapter, 2016)Global trends in higher education including e-learning, massive open online courses, and new teaching methods have positively affected control education. Control course content has evolved due to changes in industrial ... -
Hydrodynamic parameter optimization for miniature underwater glider wings
Elkolali, Moustafa; Splawski, Wilfried; Carella, Alfredo; Alcocer, Alex (OCEANS;Global Oceans 2020: Singapore – U.S. Gulf Coast, Conference object, 2021)This paper describes the design and optimization of the shape of the wings of “OASYS” research project underwater glider, by maximizing the lift to drag ratio through using computational fluid dynamics. Different wing ... -
A low-cost wave/solar powered unmanned surface vehicle
Elkolali, Moustafa; Al-Tawil, Ahmed; Much, Lennard; Schrader, Ryan; Masset, Olivier; Sayols, Marina; Jenkins, Andrew; Alonso, Sara; Carella, Alfredo; Alcocer, Alex (OCEANS;Global Oceans 2020: Singapore – U.S. Gulf Coast, Conference object, 2021)This paper presents a prototype of a low-cost Unmanned Surface Vehicle (USV) that is operated by wave and solar energy which can be used to minimize the cost of ocean data collection. The current prototype is a compact ... -
Mobile robotic platforms for the acoustic tracking of deep-sea demersal fishery resources
Masmitja, Ivan; Navarro, J.; Gomariz, S.; Aguzzi, J.; Kleft, B.; O'Reilly, T.; Katija, K.; Bouvet, P.J.; Fannjiang, C.; Vigo, M.; Puig, P.; Alcocer, Alex; Vallicrosa, G.; Palomeras, N.; Carreras, M.; Del Rio, J.; Company, J.B. (Science Robotics;Vol. 5, Issue 48, Journal article; Peer reviewed, 2020-11-25)Knowing the displacement capacity and mobility patterns of industrially exploited (i.e., fished) marine resources is key to establishing effective conservation management strategies in human-impacted marine ecosystems. ... -
Mooring design, dynamic analysis, and testing for an autonomous ocean sampling profiler
Crosbie, Louis Robert; Junge, Emma Josefine; Nikki, Jill; Lirio, Jeciel; Holden, Jakop Haugan (Bachelor thesis, 2023)This report concerns a mooring system for an ocean sampling profiler and includes a literature review of the fundamentals of mooring and its applications, a study of the design process along with dynamic simulations, a ... -
Motion control and Wi-Fi threat modelling analysis of small and affordable underwater ROV. (Ethically hacking Chasing Dory and testing/optimizing a simple PID control on a underwater ROV model)
Cyiza, Raymond B. (ACIT;2022, Master thesis, 2022)In this thesis we cover underwater ROVs open Wi-Fi access attacks, threats and vulnerabilities using ethical hacking techniques between passive and active information gathering. The information gathered is then compared ... -
Topics in guidance, navigation & control of underwater gliders
Saksvik, Ivar Bjørgo (ACIT;2022, Master thesis, 2022)This thesis is concerned with the topics of modeling, guidance, navigation, and control of underwater gliders, related to a special class of autonomous underwater vehicles (AUVs). Gliders main source of locomotion is a ... -
Towards Automated 3D reconstruction in SME factories and Digital Twin Model generation
Stensrud, Mathias; Haakstad, Ole Henrik; Sakseid, Olav; Westby, Baard; Alcocer, Alex (2018 18th International Conference on Control, Automation and Systems (ICCAS);, Journal article; Peer reviewed, 2018-12-13)This paper presents preliminary results towards the development of digital twin models for Small to Medium Enterprise (SME) factories in a partially automated and cost-effective manner. In many cases it is desirable to ... -
Unmanned Aerial System for deployment and recovery of research equipment at sea
Zolich, Artur Piotr; Johansen, Tor Arne; Elkolali, Moustafa; Al-Tawil, Ahmed; Alcocer, Alex (Aerial Robotic Systems Physically Interacting with the Environment (AIRPHARO);2021 Aerial Robotic Systems Physically Interacting with the Environment (AIRPHARO), Conference object, 2021-10-26)In this paper we present details of Miniature Underwater Gliders (MUG) deployment and recovery mechanism using a multirotor Unmanned Aerial Vehicle (UAV). The paper discusses details of MUG localization with computer vision, ... -
Verification and validation of ROV simulation using experimental data
Abraham, Jeen Ann (ACIT;2022, Master thesis, 2022)Remotely operated vehicles (ROVs) are used widely in industries such as oil and gas, offshore, and renewable industries for various applications such as inspection, maintenance, and repair of their infrastructure. There ... -
Visual-inertial-pressure SLAM for Low-cost Remotely Operated Vehicles
Tomter, Einar (Master thesis, 2023)In recent years, underwater robots have become cheaper and more readily accessible, allowing smaller companies and even private individuals to conduct their own research and explore the underwater domain. This thesis ...