A study on hydrodynamic coefficients estimation of modelling ship using system identification method

2016 ◽  
Vol 40 (10) ◽  
pp. 935-941
Author(s):  
Dae-Won Kim ◽  
Knud Benedict ◽  
Mathias Paschen
2018 ◽  
Vol 25 (4) ◽  
pp. 65-72
Author(s):  
Daewon Kim

Abstract This paper suggests an estimation method for ship’s hydrodynamic coefficients, which is based on the system identification method that calculates an optimum value in a mathematical way. For the purpose of modelling existing ships, this study collects real ship sea trial data as benchmarks. Prior to the optimization, a sensitivity analysis is carried out for easy and effective optimization. The simulation results using optimized coefficients agree well with corresponding benchmarks. Following this, with various trim and draught conditions, this study suggests new estimation formulas that concern all trim and draught conditions. Simulation results applying the estimation formulas are satisfactory in regard to a corresponding benchmark, compared to a result obtained by using an existing regression formula.


2000 ◽  
Vol 120 (4) ◽  
pp. 566-573
Author(s):  
Osamu Yamanaka ◽  
Akihiro Nagaiwa ◽  
Shinichiro Matsubara ◽  
Masajiro Nakada ◽  
Fumio Yamada

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