• A Step-wise Feature Selection Scheme for a Prognostics and Health Management System in Autonomous Ferry Crossing Operation 

      Cheng, Xu; Ellefsen, Andre; Li, Guoyuan; Holmeset, Finn Tore; Chen, Shengyong; Zhang, Houxiang (Chapter, 2019)
      Developing a reliable algorithm to detect faults automatically within critical components in autonomous ferries is essential for safe and cost-beneficial maritime operations. Autonomous ferries are equipped with hundreds ...
    • Automatic Fault Detection for Marine Diesel Engine Degradation in Autonomous Ferry Crossing Operation 

      Ellefsen, Andre; Cheng, Xu; Holmeset, Finn Tore; Ushakov, Sergey; Æsøy, Vilmar; Zhang, Houxiang (IEEE International Conference on Mechatronics and Automation;, Chapter, 2019)
      The maritime industry generally anticipates having semi-autonomous ferries in commercial use on the west coast of Norway by the end of this decade. In order to schedule maintenance operations of critical components in a ...
    • Coupling of dynamic reaction forces of a heavy load crane and ship motion responses in waves 

      Chu, Yingguang; Li, Guoyuan; Hatledal, Lars Ivar; Holmeset, Finn Tore; Zhang, Houxiang (Peer reviewed; Journal article, 2021)
      The conventional approach to dynamic analysis of ship motion response with shipboard operation equipment is usually done by establishing combined equations of motion of the multi-body system. The weakness of such methods ...
    • Dynamiske posisjonerings- og integrerte automasjonssystemer som beslutningsstøtte. 

      Holmeset, Finn Tore; Tomren, Jo Even (Master thesis, 2018)
      Oppgavens hovedmål er å se på hvordan datateknologi har utviklet seg de siste årene og finne ut om denne gir beslutningsstøtte for operatører av sikkerhetskritiske systemer. Undersøkelse av empiri fra to slike systemer ...
    • Fault Detection with LSTM-Based Variational Autoencoder for Maritime Components 

      Han, Peihua; Ellefsen, Andre; Li, Guoyuan; Holmeset, Finn Tore; Zhang, Houxiang (Journal article; Peer reviewed, 2021)
      Maintenance routines on ships today follow either a reactive maintenance (RM) or preventive maintenance (PvM) approach. RM can be regarded as post-failure repair, which might create large costs. PvM uses predetermined ...
    • LNG - Drift av skip 

      Aarsund, Harald Marius Kristiansen; Aandal, Reidar-Eugen Ramberg; Andersen, Hans-Kristian Solheim (Bachelor thesis, 2016)
      LNG som drivstoff til sjøs er i ett økende marked med flere nybygg under veis, men det å finne informasjon om sluttbrukers vurdering av systemet er vanskelig. Formålet med denne oppgaven, er å etablere sluttbrukers syn på ...
    • Online Fault Detection in Autonomous Ferries: Using fault-type in-dependent spectral anomaly detection 

      Ellefsen, Andre; Han, Peihua; Cheng, Xu; Holmeset, Finn Tore; Æsøy, Vilmar; Zhang, Houxiang (Peer reviewed; Journal article, 2020)
      Enthusiasm for ship autonomy is flourishing in the maritime industry. In this context, data-driven Prognostics and Health Management (PHM) systems have emerged as the optimal way to improve operational reliability and ...