Estimasi Parameter Hidrodinamika Model Sistem Gerak Kapal TPTR Menggunakan Metode WyNDA

Haliyati, Citra Nikita (2026) Estimasi Parameter Hidrodinamika Model Sistem Gerak Kapal TPTR Menggunakan Metode WyNDA. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5002221077-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (10MB) | Request a copy

Abstract

Ketepatan estimasi parameter hidrodinamika sangat menentukan akurasi model matematika gerak kapal dalam memprediksi karakteristik manuver dan respons dinamisnya. Penelitian ini bertujuan untuk mengestimasi parameter hidrodinamika pada model kapal Extended Korvet SIGMA yang memiliki sistem gerak Twin-Propeller Twin-Rudder (TPTR) menggunakan metode Wide-Array of Nonlinear Dynamics Approximation (WyNDA). Model matematika kapal diformulasikan menggunakan pendekatan Maneuvering Modeling Group (MMG) yang mempertimbangkan gaya dan momen pada hull, propeller, dan rudder. Model tersebut diasumsikan memiliki dua derajat kebebasan yang kemudian didiskritisasi untuk keperluan implementasi numerik. Selanjutnya, metode WyNDA diterapkan dengan memanfaatkan kumpulan basis fungsi nonlinier dan adaptive observer untuk mengidentifikasi parameter sistem secara online berdasarkan data hasil uji free-running model. Simulasi dilakukan dengan menggunakan data konversi koordinat posisi ECEF dan ENU. Hasil dari dua simulasi tersebut menunjukkan bahwa metode WyNDA mampu mencari nilai estimasi parameter yang tidak diketahui termasuk parameter hidrodinamika. Hal tersebut didukung dengan validasi simulasi variabel keadaan dan data pengukuran lintasan di sumbu x dan y (ECEF) serta e dan n (ENU) yang menunjukkan nilai RMSE sebesar 0,046610 dan 0,081868.
======================================================================================================================================
The accuracy of hydrodynamic parameter estimation plays a crucial role in determining the accuracy of a ship's mathematical model for predicting its maneuvering characteristics and dynamic response. This study aims to estimate the hydrodynamic parameters of an Extended SIGMA Corvette equipped with a Twin-Propeller Twin-Rudder (TPTR) propulsion system using the Wide-Array of Nonlinear Dynamics Approximation (WyNDA) method. The ship's mathematical model is formulated based on the Maneuvering Modeling Group (MMG) approach, which considers the forces and moments acting on the hull, propeller, and rudder. The model is assumed to have two degrees of freedom and is subsequently discretized for numerical implementation. The WyNDA method is then employed by utilizing a set of nonlinear basis functions and an adaptive observer to identify the system parameters online using data obtained from free-running model tests. Simulations are conducted using position data converted into the ECEF and ENU coordinate systems. The simulation results demonstrate that the WyNDA method is capable of estimating unknown parameters, including the hydrodynamic parameters. This finding is supported by the validation of the simulated state variables and measured trajectory data along the x- and y-axes (ECEF) as well as the e- and n-axes (ENU), yielding RMSE values of 0.046610 and 0.081868, respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Estimasi Parameter Hidrodinamika, MMG, Metode WyNDA, Gerak Kapal TPTR, Estimation of hydrodynamic parameters, MMG, WyNDA Method, TPTR Ship Motion
Subjects:	Q Science > Q Science (General) > Q180.55.M38 Mathematical models Q Science > QA Mathematics > QA401 Mathematical models. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Mathematics > 44201-(S1) Undergraduate Thesis
Depositing User:	Citra Nikita Haliyati
Date Deposited:	26 Jul 2026 14:24
Last Modified:	26 Jul 2026 14:24
URI:	http://repository.its.ac.id/id/eprint/137543

Actions (login required)

View Item