Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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A study on hydrodynamic coefficients estimation of modelling ship using system identification method

  • Kim, Dae-Won (Graduate school, Faculty of Mechanical Engineering and Marine Technology, University of Rostock) ;
  • Benedict, Knud (ISSIMS Institute, Hochschule Wismar, University of Applied Sciences, Technology, Business and Design) ;
  • Paschen, Mathias (Faculty of Mechanical Engineering and Marine Technology, University of Rostock)
  • Received : 2016.12.01
  • Accepted : 2016.12.29
  • Published : 2016.12.31
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Abstract

Predicting and evaluating ship manoeuvring characteristics are very important not only for the design stage, but also for the existing vessels. There are several ways to predict ship's manoeuvrability and most of them are highly connected with the estimation of hydrodynamic coefficients. This paper presents a new estimation method using the system identification with mathematical algorithms for estimating hydrodynamic coefficient in the ship's mathematical model. Specifically a double ended ferry which equips four azimuth propulsion systems were chosen as benchmark ship and a set of benchmark data which is generated in the fast time simulation software was provided to conduct mathematical optimization process. Also the initial values for the optimization were borrowed from the empirical regression formulas of the simulation software of Rheinmetall Defence ship simulator. Therefore the newly suggested mathematical optimization algorithm gave a successful result for estimation hydrodynamic coefficients. Proper optimization conditions of the objective function and constraints were also verified during the study.

Keywords

References

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Cited by

  1. Estimation of Hydrodynamic Coefficients from Sea Trials Using a System Identification Method vol.23, pp.3, 2017, https://doi.org/10.7837/kosomes.2017.23.3.258