Institutt for teknisk kybernetikk
Recent Submissions
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Fish welfare based classification method of ocean current speeds at aquaculture sites
(Journal article; Peer reviewed, 2019)ABSTRACT: A major trend in marine aquaculture is to move production to more exposed sites with occasionally rough ocean current events. However, it is unclear whether fish will thrive in these extreme environments, since ... -
Identification and Classification of Electrical Loads in a Norwegian Household Using Energy Disaggregation Methods of Non-Intrusive Load Monitoring.
(Master thesis, 2019)Formålet med denne avhandlingen er å fastslå fordelene til forbrukerne ved innføring av smart strømmålere. Et eksperiment ble utformet for å samle inn totalt forbruksdata samt individuell apparatdata i et ikke-laboratoriemiljø ... -
The Mode Mixing Problem and its Influence in the Neural Activity Reconstruction
(Journal article; Peer reviewed, 2019)This paper presents and discusses the challenge of mode mixing when using the Empirical Mode Decomposition (EMD) to identify intrinsic modes from EEG signals used for neural activity reconstruction. The standard version ... -
Phasor Estimation based on Modified Recursive Prony
(Chapter, 2018)Synchronized Measurement Technology represented by Phasor Measurement Units (PMUs) is a sophisticated tool for power system monitoring and contributes to a more reliable and secure operation of the power systems. Phasor ... -
Consistent kinematics and dynamics calibration of lightweight redundant industrial manipulators
(Journal article; Peer reviewed, 2018)Absolute accuracy is one of industrial manipulator’s key performance characteristics, which is critical for emerging robotics applications such as laser cutting, riveting, and carbon fiber placement as well as for many ... -
Stabilization of a linear hyperbolic PDE with actuator and sensor dynamics
(Journal article; Peer reviewed, 2018)We consider a scalar 1-D linear hyperbolic partial differential equation (PDE) for which infinite-dimensional backstepping controllers have previously been designed based on boundary actuation and sensing, and incorporate ... -
Control of a Time-Variant 1–D Linear Hyperbolic PDE using Infinite-Dimensional Backstepping
(Journal article; Peer reviewed, 2018)We derive a state-feedback controller for a scalar 1-D linear hyperbolic partial differential equation (PDE) with a spatially-and time-varying interior-domain parameter. The resulting controller ensures convergence to zero ... -
Collision Avoidance and Path Following for Underactuated Marine Vehicles
(Doctoral theses at NTNU;2019:103, Doctoral thesis, 2019)In this thesis we propose and investigate a collision avoidance algorithm for underactuated marine vehicles, both in two and three dimensions. We also investigate the stability properties of a path following algorithm for ... -
Subject Identification from Low-Density EEG-Recordings of Resting-States: A Study of Feature Extraction and Classification
(Journal article; Peer reviewed, 2019)A new concept of low-density electroencephalograms-based (EEG) Subject identification is proposed in this paper. To that aim, EEG recordings of resting-states were analyzed with 3 different classifiers (SVM, k-NN, and naive ... -
Curved Path Following with Deep Reinforcement Learning: Results from Three Vessel Models
(Chapter, 2018)This paper proposes a methodology for solving the curved path following problem for underactuated vehicles under unknown ocean current influence using deep reinforcement learning. Three dynamic models of high complexity ... -
Plant-wide oscillation detection using multivariate empirical mode decomposition
(Journal article; Peer reviewed, 2018)Plant-wide oscillation detection is an important task in the maintenance of large-scale industrial control systems, owing to the fact that in an interactive multi-loop environment oscillation generated in one loop may ... -
Improved oscillation detection via noise-assisted data analysis
(Journal article; Peer reviewed, 2018)Oscillation detection is usually a precursor to more advanced performance monitoring steps such as plant wide oscillation detection and root cause detection. Therefore any false or missed detection can have serious ... -
Boundary Set-Point Regulation of a Linear 2×2 Hyperbolic PDE with Uncertain Bilinear Boundary Condition
(Journal article; Peer reviewed, 2018)We design an adaptive controller for a 2 × 2 linear hyperbolic PDE with uncertain boundary parameters where measurements are taken at both boundaries, while only one boundary is actuated. The uncertainty, which appears in ... -
Detectability of Objects at the Sea Surface in Visible Light and Thermal Camera Images
(Chapter, 2018)In a number of ocean surveillance and remote sensing applications, visible light and thermal cameras are used to detect and identify objects at the sea surface. Knowing beforehand what the camera can detect or not can be ... -
Localization of an Acoustic Fish-Tag using the Time-of-Arrival Measurements: Preliminary results using eXogenous Kalman Filter
(Journal article; Peer reviewed, 2018)This paper addresses the source localization problem of an acoustic fish-tag using the Time-of-Arrival measurement of an acoustic signal, transmitted by the fish-tag. The Time-of-Arrival measurements denote the pseudo-range ... -
Path Planning of Multi-UAS Communication Relay by Decentralized MPC
(Chapter, 2018)When using Autonomous Surface Vehicles (ASV) in marine operations, long distances and/or low power transmissions may severely limit the communication between the ASV and the ground station. One solution to overcome this ... -
Steady and transient inflow dynamics with actuator disk vortex theory
(Journal article; Peer reviewed, 2018)The actuator disk is a well‐known and widely used theoretical tool in wind engineering. This work proposes a new theory based on an actuator surface, capable of treating time‐varying vectorial load distributions and yaw/pitch ... -
Harmonic Transfer-function-based Impedance Modelling of a Three-phase VSC for Asymmetric AC Grids Stability Analysis
(Journal article; Peer reviewed, 2019)Impedance modeling and stability analysis of a grid-VSC system under symmetric ac grids have been extensively discussed in the literature, where the dq domain impedances are usually adopted. As for asymmetric ac grids, ... -
A Dynamic Window-Based Controller for Dynamic Positioning Satisfying Actuator Magnitude Constraints
(Journal article, 2018)This paper considers the use of a simplified dynamic window (DW) algorithm to handle actuator magnitude constraints for a 3 degrees-of-freedom dynamic positioning controller for ships. To accomplish this, we use the ... -
Development of a Dynamic Positioning System for the ReVolt Model Ship
(Journal article; Peer reviewed, 2018)A Dynamic Positioning (DP) control system is developed, implemented and tested for a scale model of DNV GL’s concept ship ReVolt. This model-scale ship is used as a test platform for sensors and control systems used in ...
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