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Design of the roll stabilization controller, using fin stabilizers and pod propellers

Cited 24 time in Web of Science Cited 24 time in Scopus
Authors
Lee, Sungkyun; Rhee, Key-Pyo; Choi, Jin-Woo
Issue Date
2011-10-01
Publisher
ELSEVIER SCI LTD
Citation
APPLIED OCEAN RESEARCH; Vol.33 4; 229-239
Keywords
Cruise shipRoll motionNominal plantLQRFin stabilizerPod propeller
Abstract
Ships experience roll motion due to waves in a seaway. Therefore, fin stabilizers are installed to stabilize such roll motion. A fin stabilizer is effective at reducing the roll motion at moderate speeds but not at low speeds. Recently, pod propellers have been used with fin stabilizers for roll stabilization. In the paper, a MIMO (multi-input multi-output) optimal control system that has two control inputs such as fin stabilizers and pod propellers is designed. The LQR (linear quadratic regulator) control algorithm is applied to reduce the roll motion of cruise ships in regular waves. Also, the nominal plant and the frequency-weighted LQR are applied to reduce the roll motion in irregular waves. The roll motion of cruise ships is effectively reduced when the fin and pod propeller are used as the control actuators at low speeds. The optimal control gain is easily found when the frequency-weighted LQR is applied. (C) 2011 Elsevier Ltd. All rights reserved.
ISSN
0141-1187
Language
English
URI
https://hdl.handle.net/10371/75089
DOI
https://doi.org/10.1016/j.apor.2011.07.005
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Architecture and Architectural Engineering (건축학과)Journal Papers (저널논문_건축학과)
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