Now showing items 21-40 of 336

    • A Multi-Modal Approach for Hand Motion Classification Using Surface EMG and Accelerometers 

      Fougner, Anders Lyngvi; Scheme, Erik; Chan, Adrian D. C.; Englehart, Kevin; Stavdahl, Øyvind (IEEE Engineering in Medicine and Biology Society. Conference Proceedings;6091054, Conference object; Journal article; Peer reviewed, 2011)
      For decades, electromyography (EMG) has been used for diagnostics, upper-limb prosthesis control, and recently even for more general human-machine interfaces. Current commercial upper limb prostheses usually have only two ...
    • A Screw-less Solution for Snake-like Robot Assembly and Sensor Integration 

      Li, Guoyuan; Verdru, Peter; Li, Wei; Zhang, Houxiang; Gomez, Juan Gonzalez (Chapter; Conference object, 2017)
      Assembly or repair of snake-like robots are often time consuming and low efficiency. This paper presents a novel approach for module improvement that can efficiently integrate sensors, micro-controllers and batteries into ...
    • A simplified model of planar snake robot locomotion 

      Liljeback, Pål; Pettersen, Kristin Ytterstad; Stavdahl, Øyvind; Gravdahl, Jan Tommy (Conference object, 2010)
      This paper presents a model of the kinematics and dynamics of a planar, wheelless snake robot aimed at control design and stability analysis purposes. The proposed model is significantly less complex than existing models ...
    • A snake robot with a contact force measurement system for obstacle-aided locomotion 

      Liljeback, Pål; Pettersen, Kristin Ytterstad; Stavdahl, Øyvind (Conference object, 2010)
      A snake robot can traverse cluttered and irregular environments by using irregularities around its body as push-points to aid the propulsion. This is denoted obstacle-aided locomotion and requires the snake robot to have ...
    • A strategy for robust precision control of an endbody being towed by an orbiting UAV 

      Merz, Mariann; Johansen, Tor Arne (Chapter; Conference object, 2017)
      This paper presents a strategy for end-body positioning maneuvers using a towed cablebody system where a fixed wing Unmanned Aerial Vehicle (UAV) is stabilized in a circular orbit. High precision maneuvers such as object ...
    • A Survey on Network Resiliency Methodologies against Weather-based Disruptions 

      Kmiecik, Wojciech; Rak, Jacek; Medeiros, Carmo; Heegaard, Poul Einar; Mas Machuca, Carmen; André, Joao; Jorge, Luisa; Musumeci, Francesco; Voyiatzis, Artemios; Pasic, Alija; Tornatore, Massimo; Travanca, Rui; Furdek, Marija; Hmaity, Ali; Simpson, Steven; Babarczi, Peter; Martins, Lucia; Følstad, Eirik Larsen; Braun, Torsten (Chapter; Conference object; Peer reviewed, 2016)
      Due to the increasing dependence on network ser- vices of our society, research has recently been concentrating on enhancing traditional protection strategies to withstand large- scale failures, as in case of disaster ...
    • A Systems approach to Environmental Engineering: Collaboration between University, Research Centre and Industry 

      Fet, Annik M; Asbjørnsen, Odd A; Brattebø, Helge; Angelfoss, Alfred (Conference object, 1996)
      University and college education of engineers and technicians face a sever dilemma. On the one hand is there a strong need and demand from society to enforce interdisciplinarity and systems thinking to master the intricate ...
    • A systems approach to extended producer responsibility: Economic efficiency and environmental effectiveness for packaging in plastic industry in Norway 

      Røine, Kjetil; Asbjørnsen, Odd Andreas; Brattebø, Helge (Conference object, 1998)
      This paper will, through a theoretical discussion of efficiency and effectiveness, present a model for a recovery system. The plastic packaging recovery system in Norway is described, and despite the lack of empirical data, ...
    • A Tension-based Position Estimation Approach for Moored Marine Vessels 

      Ren, Zhengru; Skjetne, Roger; Kjerstad, Øivind Kåre (10th IFAC Conference on Manoeuvring and Control of Marine Craft;MCMC 2015, Conference object; Journal article; Peer reviewed, 2015)
      This paper presents a novel idea on a tension-based localization approach as a redundancy measure to handle the situation when the position reference (posref) signals are not available or significant GNSS drifts occur, ...
    • A Uniformly Semiglobally Exponentially Stable Nonlinear Observer for GNSS- and Camera-Aided Inertial Navigation 

      Fusini, Lorenzo; Fossen, Thor I.; Johansen, Tor Arne (Conference object; Journal article; Peer reviewed, 2014)
      In this paper a nonlinear observer for estimation of position, velocity, acceleration, attitude and gyro bias of an Unmanned Aerial Vehicle (UAV) is proposed. The sensor suite consists of an Inertial Measurement Unit (IMU), ...
    • A Wall-Function Approach for Direct Precipitation/Crystallization Fouling in CFD Modelling 

      Johnsen, Sverre Gullikstad; Johansen, Stein Tore; Wittgens, Bernd (Conference object; Lecture; Peer reviewed, 2015)
      The main objective of this paper is to present a generic modelling framework, for the diffusive mass transport through the turbulent, reactive boundary layer of multi-component fluid mixtures that ...
    • Achieving "Good Enough" Software Security: The Role of Objectivity 

      Tøndel, Inger Anne; Cruzes, Daniela Soares; Jaatun, Martin Gilje (Chapter; Conference object, 2020)
      Today's software development projects need to consider security as one of the qualities the software should possess. However, overspending on security will imply that the software will become more expensive and often also ...
    • Achieving dependability in software-defined networking - a perspective 

      Helvik, Bjarne Emil; Heegaard, Poul Einar; Mendiratta, Veena (Chapter; Conference object; Peer reviewed, 2015)
      In this paper we take a closer look at the operationof software defined networking (SDN) in intra-domain networks.The focus is on the dependability issues related to interworking ofSDN controllers, network OS (NOS), and ...
    • Acoustic multipole sources from the Boltzmann equation 

      Viggen, Erlend Magnus (Chapter; Conference object; Peer reviewed, 2013)
      By adding a particle source term in the Boltzmann equation of kinetic theory, it is possible to represent particles appearing and disappearing throughout the fluid with a specified distribution of particle velocities. By ...
    • Active camera control with obstacle avoidance for remote operations with industrial manipulators: Implementation and experimental results 

      Bjerkeng, Magnus; Transeth, Aksel Andreas; Pettersen, Kristin Ytterstad; Kyrkjebø, Erik; Fjerdingen, Sigrud Aksnes (Conference object, 2011)
      Remote controlled robots on offshore oil and gas platforms can potentially reduce costs and improve environment, health and safety issues. A key to successful remote control is to provide onshore operators with a sufficient ...
    • Actuarial senescence in a long-lived orchid challenges our current understanding of ageing 

      Dahlgren, Johan P.; Colchero, Fernando; Jones, Owen R.; Øien, Dag Inge; Moen, Asbjørn; Sletvold, Nina (Conference object; Journal article, 2016)
      The dominant evolutionary theory of actuarial senescence—an increase in death rate with advancing age—is based on the concept of a germ cell line that is separated from the somatic cells early in life. However, such a ...
    • An approach towards the design of robust arctic maritime transport systems 

      Bergström, Martin Vilhelm; Ehlers, Sören; Erikstad, Stein Ove (Maritime-Port Technology and Development;, Book; Chapter; Conference object; Peer reviewed, 2014)
      This paper describes a simulation-based approach towards the design of robust arctic maritime transport systems that are adaptable to uncertain future ice conditions. It makes it possible to simulate the performance of ...
    • An Augmented Lagrangian Method for Optimal Control of Continuous Time DAE Systems 

      Aguiar, Marco Aurelio Schmitz de; Camponogara, Eduardo; Foss, Bjarne Anton (Conference object; Journal article; Peer reviewed, 2016)
      This works presents an algorithm for solving optimal control problems (OCP) of differential algebraic equations (DAE) based on the augmented Lagrangian method. The algorithm relaxes the algebraic equations and solves a ...
    • An exact penalty-function approach to proactive fault-tolerant economic MPC 

      Knudsen, Brage Rugstad; Brusevold, Jon Håman; Foss, Bjarne Anton (Chapter; Conference object; Peer reviewed, 2017)
      This paper presents a fault-tolerant economic model predictive control scheme for proactive handling of incipient actuator faults. The scheme applies an L1 exact penalty function with a set of switching rules in order to ...
    • Analysis of underwater snake robot locomotion based on a control-oriented model 

      Kohl, Anna M.; Pettersen, Kristin Ytterstad; Kelasidi, Eleni; Gravdahl, Jan Tommy (Proceedings of the 2015 IEEE Conference on Robotics and Biomimetics;, Journal article; Conference object; Peer reviewed, 2015)
      This paper presents an analysis of planar underwater snake robot locomotion in the presence of ocean currents. The robot is assumed to be neutrally buoyant and move fully submerged with a planar sinusoidal gait and limited ...