Hybrid Control to Improve Transient Response of Integral Action in Dynamic Positioning of Marine Vessels
Journal article
Permanent lenke
http://hdl.handle.net/11250/2374415Utgivelsesdato
2015Metadata
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- Institutt for marin teknikk [3472]
- Publikasjoner fra CRIStin - NTNU [38688]
Sammendrag
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 performance deteriorates. The method allows for a
exible
tuning, and could be useful when there are long periods of normal operating conditions, but
abnormal events may occur. In that case the hybrid controller will have a low tuning in the
normal regime and switch to a more aggressive tuning in the abnormal regime. Stability of the
hybrid system is investigated, and a simulation case is performed.