Browsing Institutt for teknisk kybernetikk by Title
Now showing items 1436-1455 of 3663
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Fremtidige PLS-baserte kontrollanlegg i vannkraftverk
(Bachelor thesis, 2021)Kraftmarkedet og organisatoriske endringer, i tillegg til den akselererende teknologiutviklingen, påvirker hvilke investeringer som Statkraft må vurdere i tiden som kommer. Det lokale kontrollanlegget ved de 346 vannkraftverkene ... -
Frequency Detuning of Parametric Roll Resonance
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:43, Doctoral thesis, 2013) -
Frequency domain analysis of robust demodulators for high-speed atomic force microscopy
(Journal article; Peer reviewed, 2017)A fundamental but often overlooked component in the z-axis feedback loop of the atomic force microscope (AFM) operated in dynamic mode is the demodulator. Its purpose is to obtain a preferably fast and low-noise estimate ... -
Frequency Domain Modelling and Stability Analysis of a DFIG-based Wind Energy Conversion System Under None-compensated AC Grids: Impedance Modelling Effects and Consequences on Stability
(Journal article; Peer reviewed, 2019)Impedance-based frequency domain method is an effective tool for the stability assessment of a doubly-fed induction generator (DFIG) system. Several impedance models have been proposed recently, however, these models are ... -
Frequency Domain Modelling for Assessment of Hilbert and SOGI Based Single-Phase Synchronisation
(Chapter, 2019)Two different single-phase synchronisation schemes based on orthogonal system generation (OSG) are modelled in the linear, time-periodic framework. The frequency adaptive Hilbert phase locked loop (PLL) and the frequency-fixed ... -
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 ...