• Development of dynamic safety envelopes for autonomous remotely operated underwater vehicles 

      Hegde, Jeevith; Henriksen, Eirik Hexeberg; Utne, Ingrid Bouwer; Schjølberg, Ingrid (Chapter, 2018)
      This paper describes the implementation of dynamic safety envelopes for Autonomous Remotely Operated Vehicles (AROVs). A safety envelope is defined as a three-dimensional spatial area around the AROV, which forms a virtual ...
    • Development of safety envelopes and subsea traffic rules for autonomous remotely operated vehicles 

      Hegde, Jeevith; Henriksen, Eirik Hexeberg; Utne, Ingrid Bouwer; Schjølberg, Ingrid (Journal article; Peer reviewed, 2019)
      This article presents the process used to develop safety envelopes and subsea traffic rules for autonomous remotely operated vehicles (AROVs) used in subsea inspection, maintenance, and repair (IMR) operations. Preventing ...
    • ROV Control System for Positioning of Subsea Modules 

      Henriksen, Eirik Hexeberg (Master thesis, 2014)
      Installation of deep water Xmas trees for subsea oil production is sometimes done by lowering the tree using one wire. Xmas trees are interfacing with other equip- ment on the seafloor and will therefore need to be positioned, ...
    • System Design for the Next Generation Subsea IMR Vehicles 

      Henriksen, Eirik Hexeberg (Doctoral theses at NTNU;2018:196, Doctoral thesis, 2018)
      This thesis is about how to unlock the full potential of unmanned underwater vehicles to save cost and increase quality in inspection maintenance and repair (IMR) services for subsea petroleum extraction equipment. Today ...
    • Vision Based Localization for Subsea Intervention 

      Henriksen, Eirik Hexeberg; Schjølberg, Ingrid; Gjersvik, Tor Berge (Chapter; Peer reviewed, 2017)
      A vision based underwater localization system using fiducial markers is proposed. The system is implemented as a new control mode in a shared control system for ROVs and tested experimentally in a pool. A high accuracy ...