Browsing NTNU Open by Author "Gravdahl, Jan Tommy"

Now showing items 61-80 of 306

    • Compressor Surge Control Design Using Linear Matrix Inequality Approach 

      Uddin, Nur; Gravdahl, Jan Tommy (Chapter, 2017)
      A novel design for active compressor surge control system (ASCS) using linear matrix inequality (LMI) approach is presented and including a case study on piston-actuated active compressor surge control system (PAASCS). The ...

    • Compressor Surge Control Using Lyapunov Neural Networks 

      Neverlien, Åse; Moe, Signe; Gravdahl, Jan Tommy (Peer reviewed; Journal article, 2020)
      In this paper surge control in a compression system using a close-coupled valve (CCV) is proposed. The control design is based on Lyapunov control theory in combination with neural networks (NNs) and focuses on minimization ...

    • A Constrained Control Allocation and Tuning Scheme for Hybrid Actuators in Spacecraft Attitude Control 

      Grøtte, Mariusz Eivind; Gravdahl, Jan Tommy; Johansen, Tor Arne (Peer reviewed; Journal article, 2023)
      Agile rotational maneuvers of spacecraft requires careful execution since its actuators may not be able to produce the demanded torques, causing the state trajectories to deviate and a desired attitude would not be guaranteed. ...

    • Control and Development of a Wearable Semi-Active Tremor Suppression Device 

      Khan, Shahrukh (Master thesis, 2019)
      Skjelvinger er en av de bevegelsesforstyrrelsene med høyest prevalens. De er definert som ufrivillig, rytmisk skjelving av kroppsdeler, som for eksempel i hender. De mest typiske formene for skjelvinger er essensiell tremor ...

    • Control in Atomic Force Microscopy: A Fractional Order Approach 

      Moltumyr, Andreas Hanssen (Master thesis, 2019)
      Denne avhandlingen er viet til undersøkelsen av fraksjonell-ordens kontroll innen nanoposisjonering. Hovedmålet har vært å teste og finne ut om teorien bak fraksjonell kalkulus kan bli brukt til å forbedre følging av ...

    • Control-oriented model of a generating set comprising a diesel engine and a synchronous generator 

      Tuffaha, Mutaz; Gravdahl, Jan Tommy (Peer reviewed; Journal article, 2015)
      A generating set (Genset) comprises a prime mover such as a Diesel Engine, and a synchronous generator. The most important controllers of such systems are the speed governor to regulate the engine or shaft speed and the ...

    • Controllability analysis of planar snake robots influenced by viscous ground friction 

      Liljeback, Pål; Pettersen, Kristin Ytterstad; Stavdahl, Øyvind; Gravdahl, Jan Tommy (Chapter, 2009)
      This paper investigates the controllability properties of planar snake robots influenced by viscous ground friction forces. The paper provides three contributions: 1) A partially feedback linearized model of a planar snake ...

    • Controllability and Stability Analysis of Planar Snake Robot Locomotion 

      Liljeback, Pål; Pettersen, Kristin Ytterstad; Stavdahl, Øyvind; Gravdahl, Jan Tommy (Journal article; Peer reviewed, 2011)
      This paper contributes to the understanding of snake robot locomotion by employing nonlinear system analysis tools for investigating fundamental properties of snake robot dynamics. The paper has five contributions: 1) a ...

    • Controller design for the Kongsberg Protector remote weapon station 

      Bordvik, Øystein (Master thesis, 2009)
      This thesis is about controller design for the Kongsberg Protector remote weapon station. The Kongsberg Protector RWS is a vehicle-mounted weapon station designed for carrying machine guns and automatic grenade launchers. ...

    • Convex Neural Network-Based Cost Modifications for Learning Model Predictive Control 

      Seel, Katrine; Kordabad, Arash Bahari; Gros, Sebastien; Gravdahl, Jan Tommy (Peer reviewed; Journal article, 2022)
      Developing model predictive control (MPC) schemes can be challenging for systems where an accurate model is not available, or too costly to develop. With the increasing availability of data and tools to treat them, ...

    • Damping and Tracking Control Schemes for Nanopositioning 

      Eielsen, Arnfinn Aas; Vagia, Marialena; Gravdahl, Jan Tommy; Pettersen, Kristin Ytterstad (Journal article; Peer reviewed, 2013)
      Fast and accurate tracking of reference trajectories is highly desirable in many nanopositioning applications, including scanning probe microscopy. Performance in common positioning stage designs is limited by the presence ...

    • Data-Driven Dynamical Modeling in the Face of Data Limitations 

      Lundby, Erlend Torje Berg (Doctoral theses at NTNU;2023:206, Doctoral thesis, 2023)
      Data-driven modeling has experienced an enormous increase in popularity recent years due to the ever-growing data abundance, access to cheap computational resources and great advances in algorithms and methodology. This ...

    • Deep learning assisted physics-based modeling of aluminum extraction process 

      Robinson, Haakon; Lundby, Erlend Torje Berg; Rasheed, Adil; Gravdahl, Jan Tommy (Peer reviewed; Journal article, 2023)
      Modeling complex physical processes such as the extraction of aluminum is mainly done using pure physics-based models derived from first principles. However, the accuracy of these models can often suffer due to a partial ...

    • Deep Learning for Autonomous Navigation in Crop Fields 

      Vasbotten, Henrik (Master thesis, 2020)
      Abstract will be available on 2023-01-27

    • Design and control of precision drop-on-demand herbicide application in agricultural robotics 

      Urdal, Frode; Utstumo, Trygve; Vatne, Jan Kåre; Ellingsen, Simen Andreas Ådnøy; Gravdahl, Jan Tommy (Chapter, 2014)
      Drop-on-demand weed control is a field of research within Precision Agriculture, where the herbicide application is controlled down to individual droplets. This paper focuses on the fluid dynamics and electronics design ...

    • Design and Implementation of Attitude Control for 3-axes Magnetic Coil Stabilization of a Spacecraft 

      Tudor, Zdenko (Master thesis, 2011)
      Spacecrafts, especially satellites, play an ever greater rolein our daily lives as we increasingly depend on the services they provide,which in turn, more often than not, critically depend on maintainingcorrect payload ...

    • Design of a nonlinear damping control scheme for nanopositioning 

      Vagia, Marialena; Eielsen, Arnfinn Aas; Gravdahl, Jan Tommy; Pettersen, Kristin Ytterstad (Journal article; Peer reviewed, 2013)
      The application of a nonlinear control law for vibration damping on a typical nanopositioning system is investigated. The nonlinear control law is an augmentation of the linear integral force feedback scheme, where the ...

    • Design of a Precision Spray Matrix - Valve Matrix Control for Microspraying in Precision Agriculture 

      Urdal, Frode (Master thesis, 2014)
      Drop-on-demand weed control is a field of research within precision agriculture. The herbicide application is controlled down to individual droplets. In this master thesis the precision spray matrix for an autonomous field ...

    • Design of Attitude Control System of a Double CubeSat 

      Bråthen, Gaute (Master thesis, 2013)
      The NTNU Test Satellite, NUTS, is a satellite being build in a student CubeSat project at the Norwegian University of Science and Technology. The project was started in September 2010 as a part of the Norwegian student ...

    • Design of Attitude Control System of a Double CubeSat 

      Bråthen, Gaute (Master thesis, 2013)
      The NTNU Test Satellite, NUTS, is a satellite being build in a student CubeSat project at the Norwegian University of Science and Technology. The project was started in September 2010 as a part of the Norwegian student ...