Blar i NTNU Open på forfatter "Schjølberg, Ingrid"
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High reliability management and control operator risks in autonomous marine systems and operations
Utne, Ingrid Bouwer; Schjølberg, Ingrid; Roe, Emery (Journal article; Peer reviewed, 2019)This paper's objective is to analyze the main real-time risks in operation of autonomous marine systems, which follow from various levels of autonomy (LoA). High reliability management (HRM) is an established framework for ... -
Hybrid fuel-cell auxiliary system for an aquaculture vessel
Burås, Magne (Master thesis, 2018)Emission reduction in shipping and marine operations is important for the future of this planet and its oceans. This thesis looks into the operation of a hybrid fuel-cell power production system on an aquaculture vessel. ... -
Hydrogen in the maritime
Schjølberg, Ingrid; Baumann, Jennifer (Book, 2021)Hydrogen in the maritime is a deliverable under IEA TCP Hydrogen and investigates the use of hydrogen as a fuel in shipping. -
Identification of Hydrodynamic Parameters for Remotely Operated Vehicles
Eidsvik, Ole Alexander (Master thesis, 2015)The hydrodynamic parameters that characterize the behaviour of a general work class Remotely Operated Vehice(ROV) are evaluated. This is done by deriving the equation of motion for an ocean vessel moving in 6 degrees of ... -
Integration of risk in hierarchical path planning of underwater vehicles
Lefebvre, Nicolas; Schjølberg, Ingrid; Utne, Ingrid Bouwer (Journal article; Peer reviewed, 2016)This paper focuses on path planning problems integrating the risk of collision. This challenge is crucial regarding the use of autonomous underwater vehicles (AUVs) for inspection, maintenance and repair operations. The ... -
Intelligent low-cost solutions for underwater intervention using computer vision and machine learning
Skaldebø, Martin Breivik (Doctoral theses at NTNU;2023:27, Doctoral thesis, 2023)This thesis considers intelligent solutions that facilitates for autonomous technology in underwater intervention and navigation. A special focus have been on implementing methods and solutions in inspection, maintenance, ... -
Kinematic Control of Underwater Robotic System
Hugo, Åsmund Pedersen (Master thesis, 2016)Underwater robotic systems can be used for a variety of operations, from reparations of sub-sea installations, to perform inspections and surveys. Such operations will demand robust and fast kinematic control, if they were ... -
Methods and models for analyzing and controlling the safety in operations of autonomous marine systems
Yang, Ruochen (Doctoral theses at NTNU;2023:38, Doctoral thesis, 2023)Autonomous marine systems (AMS), such as autonomous underwater vehicles (AUVs), and unmanned surface vehicles (USVs) have evolved over the past decades. Maritime autonomous surface ships (MASS) are gradually being developed ... -
Mission planner for multiple AUVs: Verification procedures combining simulations and experiment
Schjølberg, Ingrid; Buadu, Stephanie (Journal article; Peer reviewed, 2018)This paper presents a mission control system (MCS) for a cooperative system of LAUVs. The proposed method is part of a system for operating several AUVs on a joint mission. The system is run on software and hardware from ... -
Modelling and simulation of a zero-emission hybrid power plant for a domestic ferry
Balestra, Lorenzo; Schjølberg, Ingrid (Peer reviewed; Journal article, 2021)This paper presents a simulation tool for marine hybrid power-plants equipped with polymer exchange membrane fuel cells and batteries. The virtual model, through the combination of operational data and dynamically modelled ... -
Modular Underwater Robots: Modeling and Docking Control
Nielsen, Mikkel Cornelius (Doctoral theses at NTNU;2018:167, Doctoral thesis, 2018)The objective of this thesis is to investigate the modeling and control of modular underwater robots. This objective is motivated by recent events in the offshore industry, where innovative solutions are needed to cope ... -
Monocular vision-based gripping of objects
Haugaløkken, Bent Oddvar Arnesen; Skaldebø, Martin Breivik; Schjølberg, Ingrid (Peer reviewed; Journal article, 2020)Optics-based systems may provide high spatial and temporal resolution for close range object detection in underwater environments. By using a monocular camera on a low cost underwater vehicle manipulator system, objects ... -
Motion Control Systems for ROVs - Underwater Path-Following for a Videoray Pro 4 ROV
Arnesen, Bent Oddvar (Master thesis, 2016)Remotely operated vehicles (ROVs) are used for an increasing amount of underwater applications, ranging from being hobby-related to having military and scientific interests. ROVs may incorporate automatic control strategies, ... -
Navigation and collision avoidance of underwater vehicles using sonar data
Grefstad, Ørjan; Schjølberg, Ingrid (Journal article; Peer reviewed, 2018)Collision avoidance is one of the main challenges in the field of autonomous underwater vehicles (AUV). In this paper a method for detecting obstacles is proposed, using a single-beam mechanically scanning sonar, including ... -
Navigation and Control of Underwater Robotic Vehicles
Jørgensen, Erlend Kvinge (Doctoral theses at NTNU;2018:86, Doctoral thesis, 2018)The thesis considers navigation and control of underwater robotic vehicles, and is divided into two parts, with more emphasis on Part II. Part I considers stabilization of the end effector of an underwater vehicle-manipulator ... -
Next Generation Subsea Inspection, Maintenance and Repair Operations
Schjølberg, Ingrid; Gjersvik, Tor Berge Stray; Transeth, Aksel Andreas; Utne, Ingrid Bouwer (Peer reviewed; Journal article, 2016)This paper presents the latest developments in the project Next Generation Subsea Inspection, Maintenance and Repair (IMR). Subsea IMR operations are frequently carried out in the offshore oil and gas business. Increased ... -
OMAE2017-61845 Risk Management in Aquaculture: Integrating Sustainability Perspectives
Utne, Ingrid Bouwer; Schjølberg, Ingrid; Holmen, Ingunn Marie; Bar, Eirin Marie Skjøndal (Chapter; Peer reviewed, 2017)The aquaculture industry in Norway produced 1.3 million metric tons of fish in 2014, and further expansion is expected if the main sustainability challenges related to production and operation are mitigated. Major biological, ... -
On the Boundedness Property of the Inertia Matrix and Skew-Symmetric Property of the Coriolis Matrix for Vehicle-Manipulator Systems
From, Pål Johan; Schjølberg, Ingrid; Gravdahl, Jan Tommy; Pettersen, Kristin Ytterstad; Fossen, Thor I. (Journal article; Peer reviewed, 2012)This paper addresses the boundedness property of the inertia matrix and the skew-symmetric property of the Coriolis matrix for vehicle-manipulator systems. These properties are widely used in control theory and Lyapunov-based ... -
On the need for online decision support in FPSO-shuttle tanker collision risk reduction
Vinnem, Jan Erik; Utne, Ingrid Bouwer; Schjølberg, Ingrid (Journal article; Peer reviewed, 2015)More than 100 Floating Production Storage and Off-loading (FPSO) concepts are in operation at the moment worldwide, and due to increasing demand many are currently under construction or being converted from commercial ... -
Operational profiles of ships in Norwegian waters: An activity-based approach to assess the benefits of hybrid and electric propulsion
Jafarzadeh, Sepideh; Schjølberg, Ingrid (Journal article, 2018)Various regulations are imposed on shipping to increase energy efficiency and reduce environmental impacts. Alternative fuels and power systems are among the solutions for compliance with these regulations. The power system ...