Blar i Institutt for teknisk kybernetikk på tittel
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A Comparison of Observers for Estimation of the Bottomhole Pressure.
(Master thesis, 2009)New offshore oil recourses that are developed are more difficult to drill and increase the requirements to the technology in the offshore industry. A relatively new technology is Managed Pressure Drilling where a choke ... -
A computational pipeline for quantification of mouse myocardial stiffness parameters
(Journal article; Peer reviewed, 2014)The mouse is an important model for theoretical–experimental cardiac research, and biophysically based whole organ models of the mouse heart are now within reach. However, the passive material properties of mouse myocardium ... -
A computationally efficient model predictive control scheme for space debris rendezvous
(Journal article; Peer reviewed, 2019)We propose a non-linear model predictive scheme for planning fuel efficient maneuvers of small spacecrafts that shall rendezvous space debris. The paper addresses the specific issues of potential limited on-board computational ... -
A Computer Vision Approach for Autonomous Wind Turbine Inspection using a Multicopter
(Master thesis, 2014)This thesis studies the mission of autonomous inspection of a wind turbine using a multicopter. Emphasis was placed on recognition and tracking using image processing methods. The Hough line transform was used to extract ... -
A control framework for biologically inspired underwater swimming manipulators equipped with thrusters
(IFAC Proceedings series;, Journal article; Peer reviewed, 2016)In this paper we present a control framework for a novel biologically inspired underwater swimming manipulator (USM) equipped with thrusters. The framework consists of a kinematic part and a dynamic part. The kinematic ... -
A control framework for snake robot locomotion based on shape control points interconnected by Bézier curves
(Journal article; Peer reviewed, 2012)This paper presents a control framework for shape control of snake robots for the purpose of locomotion. An advantage of the framework is that it allows the macroscopic shape of a snake robot to be controlled explicitly ... -
A control-oriented model of underwater snake robots exposed to currents
(Chapter, 2015)This paper presents a control-oriented model of a neutrally buoyant underwater snake robot that is exposed to a constant irrotational current. The robot is assumed to move in a horizontal, fully submerged plane with a ... -
A Control–Oriented Model of Underwater Snake Robots
(Conference Publications;ROBIO 2014, Chapter, 2014)In this paper we consider swimming underwater snake robots that are fully immersed in water and moving in a virtual horizontal plane. The main objective of the paper is to develop a model that is well suited for control ... -
A crisis-robust modern macroeconomic system - a Control Systems Approach
(Master thesis, 2021)Det finansielle systemet er viktig for koordinering av mennesker, prosjekter og ressurser, og det har derfor en katastrofal virkning når det slutter å fungere i en finanskrise. Som en makroøkonomisk utfordring erkjennes ... -
A Cyber-Physical Systems Approach for Implementing the Receding Horizon Optimal Power Flow in Smart Grids
(Journal article; Peer reviewed, 2017)Two Major challenges in securing reliable Optimal Power Flow (OPF) operations are: (i) fluctuations induced due to renewable generators and energy demand, and (ii) interaction and interoperability among the different ... -
A Data-driven Approach to Grid Impedance : Identification for Impedance-based Stability Analysis under Different Frequency Ranges
(Chapter, 2019)The instability caused by inappropriate damping design of grid-connected converters under specific grid impedance makes the grid impedance estimation a crucial issue. To guide the system controller design toward a stable ... -
A deep learning enabler for non-intrusive reduced order modeling of fluid flows
(Journal article; Peer reviewed, 2019)In this paper, we introduce a modular deep neural network (DNN) framework for data-driven reduced order modeling of dynamical systems relevant to fluid flows. We propose various DNN architectures which numerically predict ... -
A Deep Learning-Based 3D Vision Pipeline for Shape Completion of 3D Objects
(Master thesis, 2019)Enkelt-vis formfullføring omhandler problemet hvor målet er å estimere den komplette geometrien fra delvise observasjoner av objekter, noe som er essensielt i mange applikasjoner innen datasyn og robotikk. Denne oppgaven ... -
A Delay Vector Variance based Approach for Detecting and Isolating the Non-linearity Induced Oscillations in Control Loops
(Journal article, 2017)Non-linear time series analysis based methods are a popular choice for industrial control loop data analysis. In this paper a delay vector variance (DVV) based approach is presented to analyze the source of oscillations ... -
A Distributed Algorithm for Scenario-based Model Predictive Control using Primal Decomposition *
(Journal article; Peer reviewed, 2018)In this paper, we consider the decomposition of scenario-based model predictive control problem. Scenario MPC explicitly considers the concept of recourse by representing the evolution of uncertainty by a discrete scenario ... -
A distributed parameter systems view of control problems in drilling
(Journal article; Peer reviewed, 2015)We give a detailed view of estimation and control problems raised by the drilling process where the distributed nature of the system cannot be ignored. In particular, we focus on the transport phenomena in Managed Pressure ... -
A dither-free extremum-seeking control approach using 1st-order least-squares fits for gradient estimation
(Journal article; Peer reviewed, 2014) -
A dynamic model of the drilling action of percussive tools
(Chapter, 2019)A phenomenological model is proposed to explain the existence of sweet spot in the relationship between the rate of penetration (ROP) and the weight-on-bit (WOB), i.e., the existence of an optimal WOB for which the ROP is ... -
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 ...