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Design of an Electric X-mas Tree Gate Valve Actuator
(Master thesis, 2007)
The increasing need for more energy in the world is making the oil companies search for hydrocarbons in deeper water and with longer distances between the well and platform(step-out) never experienced before. Current systems ...
3D AUV Collision Avoidance
(Master thesis, 2007)
An underlying requirement for any Autonomous Underwater Vehicle (AUV) is to navigate through unknown or partly unknown environments while performing certain user specified tasks. The loss of an AUV due to collision is ...
Numerical Modelling and Model Reduction of Heat Flow in Robotic Welding
(Master thesis, 2007)
The project includes a numerical model of heat flow in robotic welding. The modelling is done in finite element method, and afterwards exported to Matlab where the model will be linearized and model reduced. The ultimate ...
Modeling and Simulation of Anti-slug Control in Hydro Experimental Multiphase Flow Loop
(Master thesis, 2007)
Handling slug flow is a matter of necessity in the oil and gas industry. Large slugs cause problems at the production platform by overfilling the first stage separator leading to poor separation and pressure increase, which ...
Modeling and Simulation of an Active Hydraulic Heave Compensation System for Offshore Cranes
(Master thesis, 2007)
This thesis deals with the mathematical modeling of hydraulic heave compensation systems. When performing operations such as launch and recovery of remote operated vehicles and lowering subsea installation parts to the sea ...
Advanced leak detection in oil and gas pipelines using a nonlinear observer and OLGA models
(Master thesis, 2007)
An adaptive Luenberger-type observer with the purpose of locating and quantifying leakages is presented. The observer only needs measurements of velocity and temperature at the inlet and pressure at the outlet to function. ...
Discrete-Time Backstepping Design Applied to Position Tracking Control of an Electro-Pneumatic Clutch Actuator
(Master thesis, 2007)
This thesis investigates different methods of backstepping controller design for an electro-pneumatic clutch actuator used in heavy duty trucks. The first part of the thesis is a literature study, where the subject is ...
Pipeline Liquid Control using Nonlinear MPC and OLGA: Optimal Utilization of Available Liquid Buffer Volume during Pipeline Transients
(Master thesis, 2007)
Pipelines with multiphase flow will exhibit large and highly nonlinear liquid rates during transients caused by changes in production rate. This requires either a large separator (slug catcher) downstream, capable of ...
Controller design for an unmanned surface vessel: Design of a heading autopilot and way-point navigation system for an underactuated USV.
(Master thesis, 2007)
Design of a heading autopilot and way-point navigation system an underactuated USV.
Verification and extension of a linear model of a rotary converter
(Master thesis, 2007)
In this work, a verification and extension of a linear rotary converter model is done in Matlab®/Simulink. The existing model was developed by Thomas Høyvik Garten in his master thesis “Linear Model of Rotary Converter in ...