Coefficients Extraction of Model and Constrained Controller Design for Fin-Roll Stabilizer System in a Fishing Boat

This study aimed at stabilizing and decreasing the fishing boat’s nonlinear roll motion using a fin-roll stabilizer. To do so, numerical and analytical modeling have been introduced. In addition, a numerical method and empirical formulas for calculating the coefficients of the model are used. A Computational fluid dynamics (CFD) method is employed to analyze both the fluid flow and its effect on the fin performance. Constrained linear quadratic regulator (LQR) controller is designed and used to control the roll motion in the presence of operational constraints of the fin’s actuator. To boost the validity of results, the performance of this controller is compared with a conventional proportional-integral-derivative (PID) controller. Simulation results demonstrate the significant amount of reduction in roll amplitude.


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  • Accession Number: 01679370
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 24 2018 9:52AM