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Frequency Domain Stability Analysis of MMC-Based HVdc for Wind Farm Integration
(Journal article; Peer reviewed, 2016)This paper investigates the stability of offshore wind farms integration through a modular multilevel converter-based high-voltage dc (MMC-HVdc) transmission system. Resonances or instability phenomena have been reported ... -
Frequency Fluctuations in Marine Microgrids: Origins and Identification Tools
(Peer reviewed; Journal article, 2020)Fluctuation of frequency IS arguably the most characteristic feature of marine microgrids. T his concerns both frequency drift during step load change and all quasi-periodic fluctuation due to the impact of various factors ... -
Frequency-Adaptive Energy Control for Grid-Forming MMCs Under Unbalanced Conditions
(Peer reviewed; Journal article, 2023)This paper presents a frequency-adaptive energy control strategy for a Modular Multilevel Converter (MMC) which is suitable for grid-forming operation under unbalanced conditions. The average components of the energy sum ... -
Frequency-dependent deficits in head steadiness in patients with nonspecific neck pain
(Journal article; Peer reviewed, 2019)Motor control impairments are reported in patients with nonspecific neck pain but the particular deficits in underlying regulatory systems are not known. Head steadiness is controlled both by voluntary and reflex systems ... -
Frequency-dependent source and load impedances in power systems based on power electronic converters
(Chapter, 2016)Representations of power systems by frequency dependent impedance equivalents is an emerging technique in dynamic analyses of power systems including power electronic converters. The technique has been applied for decades ... -
From Beginner to Expert: Deep Reinforcement Learning Controller for 3D Path Following and Collision Avoidance by Autonomous Underwater Vehicles
(Master thesis, 2020)Tradisjonelle kybernetiske metoder har mange verktøy og teknikker som kan anvendes for en rekke klasser dynamiske systemer. En forutsetning for å kunne anvende mange av de tradisjonelle metodene, er en pålitelig matematisk ... -
From Eureka to K-Pos: Dynamic Positioning as a Highly Successful and Important Marine Control Technology
(Journal article; Peer reviewed, 2015)Dynamic positioning (DP) started out as an exotic control technology for geological core sampling in deep waters in the early 1960s. The technology gradually became more advanced during the 1970s, especially after it was ... -
From Words to Numbers
(Master thesis, 2020)CubeSat-prosjekter øker i andel, og behovet for pålitelighetsverktøy og data er nøkkelkomponenter for å unngå tidlig tap og oppnå suksesskriteriene for oppdraget. Feiltreeanalyse (FTA) er en mye brukt metode for å analysere ... -
Fuel Optimal Thrust Allocation in Dynamic Positioning
(Journal article, 2013)This paper is focused on the thrust allocation algorithm, which is a part of a Dynamic Positioning (DP) system in marine vessels with diesel-electric power system. In this paper the focus is on using the thrust allocation ... -
Fuel Optimal Thrust Allocation In Dynamic Positioning
(Master thesis, 2013)This thesis gives a short introduction to the Dynamic Positioning(DP) domain and focuses on developing a fuel optimal thrust allocation algorithm for marine DP vessels with a diesel electric power plant. Obtained data is ... -
Fuel-Efficient Control Allocation for Supply Vessels
(Master thesis, 2012)The motivation behind this thesis was to find a control allocation algorithm to reduce the power consumption onboard maritime vessels. As more and more maritime operations starts to go at deeper sea levels the further away ... -
Full Nonlinear System Identification for a Vertical-Takeoff-and-Landing Unmanned Aerial Vehicle
(Master thesis, 2021)I denne masteroppgaven presenteres en ny dynamisk modell for den populære VTOL-droneplattformen FoxTech Babyshark 260 VTOL. På grunn av sitt design er fartøyet i stand til å ta av og lande vertikalt, gjennom å kombinere ... -
Fully Automated Bi-Hormonal Intraperitoneal Artificial Pancreas Using a Two-Layer PID Control Scheme
(Chapter, 2023)Treatment of type 1 diabetes mellitus is significantly improved by using commercially available hybrid closed-loop systems to deliver insulin. These systems, also called artificial pancreas (AP), use the subcutaneous (SC) ... -
A Fully Tunable Low-power Low-noise and High Swing EMG Amplifier with 8.26 PEF
(Chapter, 2020)In this paper, a low-noise low-power bio-potential amplifier for electromyogram (EMG) signals have designed and simulated in a commercially available 0.18 μm CMOS technology. In the first stage, a tunable band low-noise ... -
Functional Testing of Valves: A study of possible improvements that can be achived by Partial Stroke Testing at Statoil Kollsnes
(Master thesis, 2007)Summary and Conclusion Emergency Shutdown (ESD) valves and High Integrity Pressure Protection System (HIPPS) valves are final elements in Safety Instrumented Systems. Proof or functional testing are performed at specific ... -
Functionally Generating Music Structures with Prefix Trees
(Master thesis, 2021)I dette prosjektet ble et nytt system for å generere musikk med fokus på struktur designet og implementert i det funksjonelle språket Haskell. Systemet representerer og genererer musikk med delt struktur på tvers av flerer ... -
Fundamental properties of snake robot locomotion
(Chapter, 2010)This paper presents a set of fundamental properties of the velocity of a snake robot conducting lateral undulation on a planar surface. In particular, the derived properties state that the average forward velocity of the ... -
Fusing Shape and Color for High-Speed Visual Tracking
(Master thesis, 2017)In a computer vision system, one must often assume that the system will encounter objects it has never seen before. A component that is able to track such objects is therefore an integral part of a complete computer vision ... -
Fusion between camera and lidar for autonomous surface vehicles
(Master thesis, 2018)The development of autonomous surface vessels (ASVs) has seen great progress in the last few years, and are on the verge of becoming a reality. Sensing the environment in a reliable way is a key element in making a ship ... -
Fusion of Inertial Navigation and Visual Odometry by Multi-State Constraint Kalman Filter
(Master thesis, 2017)The Multi-State Constraint Kalman Filter for visual-inertial odometry with online estimation of extrinsic and intrinsic camera parameters using the fisheye camera model is presented, and its performance in terms of accuracy ...