Akademik Veri Yönetim Sistemi
Dokuz Eylül Üniversitesi Denizcilik Fakültesi Dergisi, cilt.14, sa.2, ss.164-189, 2022 (Hakemli Dergi)
This study is concerned with the active T-foil placed near the bow on
the keel line of the fast ferry and two active trim tab controls placed at the
stern to improve the maritime performance of a fast ferry, whilst improving the
comfort and safety of passengers and crew. In the scope of the study, the vertical direction of the fast ferry
under the random head waves, heave and pitch motions were taken into account. For the control of T-foil and trim Tabs, PID and LQR
control methods were used. The purpose of these controllers is to reduce the
acceleration of the heave and pitch motions of the fast ferry by changing the
operating angles of the T-foil and trim tab wings. A random wave model was
created using the Pierson-Moskowitz model, and simulations were done assuming
that the fast ferry was subjected to random head waves. Finally, in order to see the effect of vertical
acceleration on passengers, the rate of seasickness (MSI) change of the fast ferry
in uncontrolled and controlled states was examined. Mathematical models
of fast ferry, T-foil and trim tab and their simulations were carried out in
MATLAB / Simulink environment. The simulation results show that T-foil and trim
tab Active systems can effectively reduce vertical acceleration by improving
heave and pitch motions.