The railway catenary is suspended to its supports with droppers, clamps and oth-er fittings. These lumped-masses are made light and small to minimize disturbances. The mass-es cannot be completely removed but can be adjusted ...

The local dropper defect is the most common fault in the early service stage of the overhead contact line (OCL) system. The plastic deformation and loose of a dropper may cause the variation of the contact line height, ...

Pervasive gaming is a reality‑based gaming genre originating from alternative theatrical forms in which the performance becomes a part of the players⠒ everyday life. In recent years much research has been done on pervasive ...

This thesis discusses the theoretical aspects of the unscented Kalman filter (UKF) and nonlinear model predictive control (NMPC) and try to evaluate their practical value in a dynamic positioning (DP) system. A nonlinear ...

This master seeks to prove that it is possible to control a small autonomous surface vehicle with a dynamic positioning controller, using simple controls and thrust algorithm. This should be done without using observers ...

The thesis seeks to prove that it is possible to implement dynamic positioning on small autonomous surface vessels by means of simple control and thrust allocation algorithms. Doing so without the need for observers and ...

This thesis investigates the performance of high-level hybrid dynamic positioning (DP) algorithms in extreme environmental conditions. A vessel in DP uses the thrusters as the sole means of keeping position in wind, waves ...

This thesis is a collection of papers focusing on various aspects of dynamic positioning of marine vessels in ice. Most emphasis is put on the dynamic broken, or managed, sea-ice environment where pioneering operations ...

For en offshore-arbeidstaker i olje- og gassindustrien er helikoptertransporten til installasjonen den aktiviteten knyttet til den høyeste risikoen. Et alternativ til personelltransport ved hjelp av helikopter er å bruke ...

A dynamic positioning (DP) system on a diesel-electric ship applies electric power to keep the positioning and heading of the ship subject to dynamic disturbances due to the winds, waves and other external forces using ...