• Calculation of Critical Fault Recovery Time for Nonlinear Systems Based on Region of Attraction Analysis 

      Tabatabaeipour, S. Mojtaba; Blanke, Mogens (Journal article; Peer reviewed, 2014)
      In safety critical systems, the control system is composed of a core control system with a fault detection and isolation scheme together with a repair or a recovery strategy. The time that it takes to detect, isolate, and ...
    • Calibrating range measurements of lidars using fixed landmarks in unknown positions 

      Alhashimi, Anas; Magnusson, Martin; Knorn, Steffi; Varagnolo, Damiano (Peer reviewed; Journal article, 2021)
      We consider the problem of calibrating range measurements of a Light Detection and Ranging (lidar) sensor that is dealing with the sensor nonlinearity and heteroskedastic, range-dependent, measurement error. We solved the ...
    • Calibrating Robotic Systems: The Case Study Of The Butterfly Robot 

      Tønnessen, Tor Arve (Master thesis, 2021)
      "Sommerfugl" - roboten er et referansesystem for uttesting av unlineære reguleringsmetoder og algoritmer for bevegelsesplanlegging, og dens dynamikk er komplisert. Grunnet dynamikkens kompleksitet, er det nødvendig med ...
    • Camera-aided Inertial Navigation for Unmanned Aerial Vehicles using Non-linear Observers 

      Fusini, Lorenzo (Doctoral theses at NTNU;2017:225, Doctoral thesis, 2017)
      The objective of this thesis is to investigate solutions for a robust autonomous navigation system for a fixed-wing UAV. Robustness requires the ability to detect faults in the system and to compensate for the consequent ...
    • Camera-assisted AUV navigation in fish cages 

      Strand, Eirik (Master thesis, 2017)
      The usage of Remotely Operated Vehicles (ROVs) for inspection of marine structures such as fish nets is today an essential part of the growing offshore industry. In fish farms, the ROV operator has to spend most of the ...
    • Camera-Based Integrated Indoor Positioning 

      Vintervold, Ylva Stokke (Master thesis, 2013)
      This thesis is motivated by the use of unmanned aerial vehicles for obtaining measurements of the scene in a system for estimation of ice properties. Such systems are needed to ensure safety when conducting marine operations ...
    • Campaign-based modeling for degradation evolution in batch processes using a multiway partial least squares approach 

      Wu, Ouyang; Bouaswaig, Ala; Imsland, Lars Struen; Schneider, Stefan; Roth, Matthias; Moreno Leira, Fernando (Journal article; Peer reviewed, 2019)
      In the process industry, various types of degradation occur in processing plants, resulting in significant economic losses. Modeling of degradation is important because it provides quantitative insights for consideration ...
    • Cancellation of Movement Artifacts in GlucoseSensor Data 

      Nøstbakken, Roar Tordahl (Master thesis, 2017)
      The BioMKR wearable device developed by Prediktor Medical is aiming to be the first non-invasive continuous glucose monitoring device on the consumer market. The data gathered by the device, however, contains movement ...
    • Carbon Nanomaterial-Based Wing Temperature Control System for In-Flight Anti-Icing and De-Icing of Unmanned Aerial Vehicles 

      Sørensen, Kim Lynge; Strand Helland, Andreas; Johansen, Tor Arne (Conference object; Journal article; Peer reviewed, 2015-03)
      Structural changes due to ice accretion are common causes for unmanned aerial vehicle incidents in Arctic regions. For fixed wing unmanned aerial vehicles (UAVs) the leading edge of airfoil surfaces is one of the primary ...
    • Cartesian thrust allocation algorithm with variable direction thrusters, turn rate limits and singularity avoidance 

      Veksler, Aleksander Vladimirovitsj; Johansen, Tor Arne; Borrelli, Francesco; Realfsen, Bjørnar (Proceedings of the IEEE Conference on Control Applications;2014, Conference object, 2014)
      The literature on thrust allocation algorithms that is currently available usually focuses on solving only a few of the many facets of the thrust allocation problem at a time. This paper presents a unified thrust allocation ...
    • Cascade Attitude Observer for the SLAM filtering problem 

      Bjørne, Elias; Johansen, Tor Arne; Brekke, Edmund Førland (Journal article; Peer reviewed, 2017)
      This article presents an attitude observer that exploits both bearing and range measurements from landmarks, in addition to reference vectors such as magnetometer and accelerometer. It is a gyro bias observer in cascade ...
    • Case study research: the Butterfly Robot 

      Lund, Oskar Rømyhr (Master thesis, 2018)
      Robots that can only manipulate objects by grasping are very restricted and limited in their actions. Nevertheless, manipulation by grasping remains a common feature for robots, as it is the easiest way to always maintain ...
    • Case study research: the ”Butterfly” robot 

      Edlund, Mikal (Master thesis, 2019)
      For at roboter skal ha en sjanse til a komme nær mennesket når det gjelder manipulering av objekter, ma de benytte seg av mer enn bare å gripe for å manipulere objekter. Dette er der utvikling av ikke-gripende manipulering ...
    • Cautious MPC-based control with Machine Learning 

      Langåker, Helge-Andre (Master thesis, 2018)
      Using Gaussian processes as a nonparametric regression model together with model predictive control has the recent years showed promising results by utilizing the expected uncertainty that follows the GP. By utilizing the ...
    • Cautious optimization - based with Machine Learning 

      Bargen, Robin von (Master thesis, 2020)
      Model Predictive Control (MPC) algoritmer har blitt en utbredt teknikk innen industriell kontrol. I de senere årene har MPC drevne kontrollere utvidet sitt virkeomr åde og er å finne innen stadig nye forskningsfelt, som ...
    • Centralised versus Decentralised Control Reconfiguration for Collaborating Underwater Robots 

      Furno, Lidia; Nielsen, Mikkel Cornelius; Blanke, Mogens (Journal article, 2015)
      The present paper introduces an approach to fault-tolerant reconfiguration for collaborating underwater robots. Fault-tolerant reconfiguration is obtained using the virtual actuator approach, Steffen (2005). The paper ...
    • Centrifugal Compressor Load Sharing with the use of MPC 

      Øvervåg, Thomas Ferstad (Master thesis, 2013)
      The work presented in this thesis examines the possibilities of having compressors running in an optimal manner which can result in energy savings. This research looks at how a compressor operates and the problems which ...
    • Centrifugal Compressor Load Sharing with the use of MPC 

      Overvåg, Thomas Ferstad (Master thesis, 2013)
      The work presented in this thesis examines the possibilities of having compressors running in an optimal manner which can result in energy savings. This research looks at how a compressor operates and the problems which ...
    • CFD Simulations of Heave-Induced Pressure Oscillations in a Drilling System 

      Os, Martin Treu (Master thesis, 2015)
      Managed pressure drilling is an advanced collection of techniques to enhance annular pressure control. During offshore drilling, the heave motion of the rig causes large surge and swab pressure variations down the hole. ...
    • Characteristic current flow through a stocked conical sea-cage with permeable lice shielding skirt 

      Jonsdottir, Kristbjørg Edda; Pascal, Klebert; Volent, Zsolt; Alfredsen, Jo Arve (Peer reviewed; Journal article, 2021)
      The characteristic current flow field around a 55 m deep full-scale stocked conical Atlantic salmon sea-cage equipped with a 10 m permeable skirt was studied experimentally using acoustic Doppler velocimeters and profilers. ...