Implementasi Metode Ensemble Kalman Filter (Enkf) Untuk Estimasi Koefisien Hidrodinamika Kapal

Ambarwati, Titisari (2017) Implementasi Metode Ensemble Kalman Filter (Enkf) Untuk Estimasi Koefisien Hidrodinamika Kapal. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Koefisien hidrodinamika kapal merupakan koefisien yang berpengaruh penting pada perilaku gerak kapal. Pada prinsipnya perilaku gerak kapal dibagi menjadi 6 Degree of Freedom (DOF) yaitu surge, sway, heave, yaw, roll, dan pitch. Koefisien hidrodinamika kapal didapat melalui Captive test atau dikenal sebagai Planar Motion Mechanism (PMM) test atau tes Identifikasi Sistem, namun untuk melakukan Captive test di Indonesia harus mengeluarkan biaya yang mahal sehingga dilakukan cara alternatif melalui pengembangan dari tes Identifikasi Sistem yaitu Free Running Model (FRM) test. Data pada penelitian ini didapat dari tes FRM melalui Turning test atau tes lingkaran perbelokan oleh Laboraturium Hidrodinamika Indonesia (LHI) menggunakan 4 Degree of Freedom (DOF) yaitu surge, sway, yaw, roll, data yang diperoleh adalah x_3,x_4,x_5,x_6,x_7,x_8 yaitu posisi x dan posisi y, sudut roll, sudut yaw. Berdasarkan pada data tersebut dapat digunakan untuk mengestimasi koefisien hidrodinamika kapal sebagai alternatif untuk menghemat biaya selain Captive test yaitu dengan menggunakan tes FRM. Metode Ensemble Kalman Filter (EnKF) dipilih karena dapat digunakan untuk mengestimasi model dinamik non linier pada koefisien hidrodinamika kapal tanpa proses pelinieran dan Regresi Linear digunakan untuk mendapatkan nilai koefisien hidrodinamika kapal. ================================================================================================== Hydrodynamic coefficients in ship is a coefficient which have important effect on ship maneuvering.in principle the maneuver of ships is divided by 6 Degree of Freedom (D0F) which are surge, sway, heave, yaw, roll, and pitch. hydrodynamic coefficients in ship can be found Captive Test or also known as Planar Motion Mechanism (PMM) test or system identification test, however in order to conduct captive test in Indonesia, a huge amount of expense is needed, which resulting another alternative method thru developing on system identification test that is Free Running Model (FRM test. Data from this research is obtained from FRM test thru Turning test by laboratorium hidrodinamika Indonesia (LHI) using 4 Degree if Freedom (DOF) which are surge, sway, heave, yaw, roll, the obtained data from this is x3,x4,x5,x6,x7,x8 which position x, and position y, roll degree, yaw degree, based from those data, we can estimate hydrodynamic coefficients in ship as an alternative to more economical cost other than captive test which using FRM test. Metode ensemble Kalman Filter (EnKF) is chosen since it can be used to estimate non linear dynamic model on hydrodynamic coefficients in ship without linear proses and linear regression used to obtain the value of hydrodynamic coefficients in ship.

Item Type: Thesis (Undergraduate)
Additional Information: RSMa 519.2 Amb i-1
Uncontrolled Keywords: Estimasi koefisien Hidrodinamik, Regresi Linear, kapal, Kalman Filter, Ensemble Kalman Filter (EnKF).
Subjects: Q Science
Q Science > QA Mathematics
Q Science > QA Mathematics > QA278.2 Regression Analysis
Q Science > QA Mathematics > QA911 Hydrodynamics
Divisions: Faculty of Mathematics and Science > Mathematics > (S1) Undergraduate Theses
Depositing User: Titisari Ambarwati .
Date Deposited: 08 Jan 2018 04:04
Last Modified: 05 Mar 2019 07:05
URI: http://repository.its.ac.id/id/eprint/47559

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