Browsing NTNU Open by Author "Værnø, Svenn Are Tutturen"
Now showing items 1-8 of 8
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AMOS DP Research Cruise 2016: Academic full-scale testing of experimental dynamic positioning control algorithms onboard R/V Gunnerus
Skjetne, Roger; Sørensen, Mikkel Eske Nørgaard; Breivik, Morten; Værnø, Svenn Are Tutturen; Brodtkorb, Astrid H.; Sørensen, Asgeir Johan; Kjerstad, Øivind Kåre; Calabrò, Vincenzo; Vinje, Bjørn Ole (Chapter; Peer reviewed, 2017)In order to validate relevant dynamic positioning (DP) control algorithms in a realistic environment, a full-scale DP test campaign, the AMOS DP Research Cruise 2016 (ADPRC’16), was organized in a collaboration between the ... -
An Output Feedback Controller with Improved Transient Response of Marine Vessels in Dynamic Positioning
Skjetne, Roger; Sørensen, Asgeir Johan; Værnø, Svenn Are Tutturen; Brodtkorb, Astrid H. (Journal article; Peer reviewed, 2016)An output feedback controller for dynamic positioning (DP) of marine surface vessels is developed. The proposed algorithm has good performance during transients as well as good steady state performance. The method achieves ... -
Compensation of bias loads in dynamic positioning of marine surface vessels
Værnø, Svenn Are Tutturen; Brodtkorb, Astrid H.; Skjetne, Roger (Journal article; Peer reviewed, 2019)This paper investigates different methods for compensating the mean and slowly varying environmental loads, and unmodeled dynamics (bias loads) in dynamic positioning of marine vessels. Four different methods are compared; ... -
Hybrid Control to Improve Transient Response of Integral Action in Dynamic Positioning of Marine Vessels
Værnø, Svenn Are Tutturen; Skjetne, Roger (Journal article, 2015)A hybrid control approach for integral action in the PID control law for dynamically positioned marine vessels is considered. The proposed method is essentially a resetting of the integration gain when the control ... -
Hybrid controller concept for dynamic positioning of marine vessels with experimental results
Brodtkorb, Astrid H.; Værnø, Svenn Are Tutturen; Teel, Andrew R.; Sørensen, Asgeir Johan; Skjetne, Roger (Journal article; Peer reviewed, 2018)The next generation marine control systems will, as a step towards increased autonomy, have more automatic functionality in order to cope with a set of complex operations in unknown, challenging and varying environments ... -
Hybrid observer for improved transient performance of a marine vessel in dynamic positioning
Brodtkorb, Astrid H.; Værnø, Svenn Are Tutturen; Teel, Andrew R.; Sørensen, Asgeir Johan; Skjetne, Roger (Journal article; Peer reviewed, 2016)Dynamic positioning (DP) systems are used on marine vessels for automatic station keeping and tracking operations solely by use of thrusters. Observers are key components of DP systems, and two main types are proposed in ... -
Time-Varying Model-Based Observer for Marine Surface Vessels in Dynamic Positioning
Værnø, Svenn Are Tutturen; Brodtkorb, Astrid H.; Skjetne, Roger; Vincenzo, Calabro (Journal article; Peer reviewed, 2017)This paper deals with the problem of transient events in model-based observers for dynamic positioning of marine surface vessels. Traditionally, model-based observers experience a deterioration of performance during ... -
Transient Performance in Dynamic Positioning of Ships: Investigation of Residual Load Models and Control Methods for Effective Compensation
Værnø, Svenn Are Tutturen (Doctoral theses at NTNU;2020:355, Doctoral thesis, 2020)This thesis concerns how the dynamic positioning (DP) control system can better handle transient events, where the loads experienced by the vessel change significantly over a short time frame. The material is intended for ...