Browsing Institutt for teknisk kybernetikk by Title
Now showing items 2537-2556 of 3672
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Optimization-based control of diesel-electric ships in dynamic positioning
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:302, Doctoral thesis, 2014)Recent advances in computer hardware and algorithms make it possible to consider more computationally demanding control methods, allowing more effective exploitation of the equipment under control. This thesis explores ... -
Optimization-based motion planning for trawling
(Journal article; Peer reviewed, 2018)This work presents an optimization-based motion planning system for trawling operations. The formulation makes use of simplistic physical descriptions of the vessel and fishing gear together with catch dynamics of sweeping ... -
Optimization-based Planning and Control for Autonomous Surface Vehicles
(Doctoral theses at NTNU;2021:164, Doctoral thesis, 2021)With autonomy offering a number of benefits in robotics applications, such as increased safety, better consistency and reliability, reduced environmental impact and higher efficiency, it is not surprising that the topic ... -
Optimization-based Trajectory Planning and Automatic Docking for Autonomous Ferries
(Doctoral theses at NTNU;2021:79, Doctoral thesis, 2021)This Ph.D. thesis presents developments towards energy-optimized trajectory planning and automatic docking for surface vessels. It comprises eight peer-reviewed research papers, in addition to the introductory chapters ... -
Optimized Allocation of Loads in MMC-based Electric Vehicle Charging Infrastructure
(Chapter, 2020)Utilization of the modular multilevel converter (MMC) topology can enable transformer-less interfacing between electric vehicle (EV) charging infrastructure and the power distribution grid. Such configurations are claimed ... -
Optimized current reference generation for system-level harmonic mitigation in a diesel-electric ship using non-linear model predictive control
(IEEE International Conference on Industrial Technology (ICIT) 2015;, Chapter, 2015)Non-linear optimal control using collocation and multiple shooting is investigated in this paper to generate the current reference signal for the lower level control of an active filter in a marine vessel with diesel-electric ... -
Optimizing Order to Minimize Low-Pass Filter Lag
(Journal article; Peer reviewed, 2018)This paper develops a tool kit for designing low-pass filters to exhibit the smallest possible phase drop. Based solely on the stopband requirements, it is thus possible to find the best order for a filter to be employed ... -
Optimizing separator pressure in a multistage crude oil production plant
(Master thesis, 2009)This thesis contains a steady state simulation model of a multistage crude oil production plant. The unstable reservoir fluid is separated into crude oil and gas in a three stage gas oil separation plant. Peng Robinson ... -
Optimizing Transmit Sequence for Ultrafast Ultrasound Imaging
(Master thesis, 2017)A simulation tool developed for estimating the acoustic properties of different transmit beams and sequences, based on FieldSim and the linear simulator Field2, is presented. For defocused and unfocused beams, some ... -
Optisk positurestimering for bevegelse i 5 frihetsgrader
(Master thesis, 2007)Fjerdingen fremla i 2006 en løsningsmetode for kamerabasert absolutt posisjonering for tre frihetsgrader, ved bruk av et referansemønster. Denne rapporten presenterer en løsningsmetode for fem frihetsgrader med tilsvarende ... -
Orbital Stabilization of Nonlinear Underactuated Systems
(Doctoral theses at NTNU;2022:353, Doctoral thesis, 2022)Orbital stabilization is a particular form of set stabilization, where the control objective is to induce, via time-invariant state-feedback, an asymptotically stable orbit in the resulting closed-loop system. Here an orbit ... -
Oscillation analysis of low-voltage distribution systems with high penetration of photovoltaic generation
(Peer reviewed; Journal article, 2020)The use of renewable power generation brings new challenges related to power quality issues. Furthermore, with the changing power system nature due to the presence of new components such as power electronics in large numbers ... -
OT and IT-architecture -functionality and design for health 4.0
(Master thesis, 2020)Ved datainnsamling må dataene leveres i et format som er lesbart for både menneske og maskin. Med økt datamengde i helse fra forskjellige systemer, er både datakvalitet en viktig parameter for å videreformidle informasjonen Denne ... -
Outdoor Navigation Using Bluetooth Angle-of-Arrival Measurements
(Journal article; Peer reviewed, 2022) -
Outlier Rejection for GNSS-aided Inertial Navigation
(Master thesis, 2017)Motivated by the importance of accurate measurements in navigation-applications, this thesis presents the implementation of an algorithm utilizing the estimated uncertainty from a Kalman filter to determine the quality of ... -
Outline of a System for Integrated Adaptive Ice Tracking and Multi-Agent Path Planning
(Chapter; Peer reviewed, 2017)In polar region operations, drift sea ice positioning and tracking is useful for both scientific and safety reasons. Modeling ice movements has proven difficult, not least due to the lack of information of currents and ... -
Output feedback boundary control of 2x2 semilinear hyperbolic systems
(Journal article; Peer reviewed, 2017)We consider the control and state estimation of a class of 2x2 semilinear hyperbolic systems with actuation and sensing collocated at one boundary. Our approach exploits the dynamics on the characteristic lines of the ... -
Output feedback boundary control of heterodirectional semilinear hyperbolic systems
(Peer reviewed; Journal article, 2020)We solve the problem of stabilizing a general class of 1-d semilinear hyperbolic systems with an arbitrary number of states convecting in each direction and with the actuation and sensing restricted to one boundary. The ... -
Output feedback boundary control of series interconnections of 2 x 2 semilinear hyperbolic systems
(Journal article; Peer reviewed, 2017)In this paper, we present an output feedback controller for systems consisting of n 2 × 2 semilinear hyperbolic systems in series interconnection where actuation and sensing are restricted to one boundary. The output-feedback ... -
Output feedback stochastic nonlinear model predictive control for batch processes
(Journal article; Peer reviewed, 2019)Batch processes play a vital role in the chemical industry, but are difficult to control due to highly nonlinear behaviour and unsteady state operation. Nonlinear model predictive control (NMPC) is therefore one of the few ...