Rancang Bangun Sistem Pengendalian Dynamic Fin Stabilizer Untuk Reduksi Gerak Roll Pada Kapal

Abimanto, Rasyad Athaya (2023) Rancang Bangun Sistem Pengendalian Dynamic Fin Stabilizer Untuk Reduksi Gerak Roll Pada Kapal. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Gerak roll merupakan gerakan perodik terhadap sumbu longitudinal kapal. Gerak roll seringkali menyebabkan berbagai macam kerugian seperti mabuk laut hingga tenggelamnya sebuah kapal, maka diperlukan sebuah sistem yang dapat mereduksi gerak roll tersebut. Penelitian ini bertujuan untuk merancang dan membangun sistem pengendalian dynamic fin stabilizer guna mengurangi gerak roll dinamis dari kapal. Analisis dilakukan secara perhitungan numerik dan eksperimen. Perhitungan numerik dilakukan dengan merancang sistem kendali yang mereperesentasikan gerak roll dari kapal yang pemodelan dinamika roll kapal menjadi sebuah transfer function dan perancangan pengendali PI/PID atau proportional, integral, dan derivative. Sistem pengendalian PI/PID sendiri dipilih karena kesederhanaan dan teknik implementasi yang mudah jika dibandingkan dengan metode sistem pengendalian lain. Bentuk fin stabilizer dirancang berdasarkan penelitian sebelumnya yang menggunakan Airfoil NACA 0018, dimensi dari fin stabilizer ditentukan dengan memperhitungkan momen pengembali yang diperlukan dalam mereduksi gerak roll yang akan dicapai. Pengujian secara eksperimen dilakukan dengan merancang sistem pengendalian dynamic fin stabilizer yang diimplementasikan pada model kapal meliputi fin stabilizer, PCB (printed circuit board), braket dan pengendali fin stabilizer. Analisis untuk kapal tanpa dan dengan sistem pengendalian dynamic fin stabilizer dilakukan pada perhitungan numerik dan ekspreimen. Hasil dari perhitungan numerik mendapatkan nilai RMS (root mean square) dari kapal tanpa dan dengan sistem pengendalian sebesar 4,855 dan 1,766 sehingga mengindikasikan adanya pengurangan pada gerak roll kapal hingga 64,09 persen sedangkan hasil dari pengujian eksperimen mendapatkan nilai RMS dari kapal tanpa dan dengan sistem pengendali sebesar 9,47 dan 6,134 sehingga menunjukan nilai pengurangan dari sudut roll hingga 35,17 persen. Perbedaan persentase pengurangan diakibatkan oleh lingkungan eksperimen yang kurang memadai.
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Roll motion is a periodic movement around the longitudinal axis of a ship. This roll motion often leads to various detrimental effects, such as seasickness and even the potential sinking of a vessel. Therefore, a system is needed to reduce this roll motion. This research aims to design and construct a dynamic fin stabilizer control system to minimize the dynamic roll motion of the ship. The analysis is conducted through numerical calculations and experiments. The numerical calculations involve designing a control system that represents the roll motion of the ship by modeling the dynamic roll dynamics of the ship as a transfer function and designing a proportional, integral, and derivative (PI/PID) controller. The PI/PID control system is chosen for its simplicity and ease of implementation compared to other control methods. The shape of the fin stabilizer is designed based on previous research that used the NACA 0018 Airfoil. The dimensions of the fin stabilizer are determined by considering the required restoring moment to achieve the desired reduction in roll motion. Experimental testing is carried out by implementing the dynamic fin stabilizer control system on a ship model, including the fin stabilizer, printed circuit board (PCB), bracket, and the fin stabilizer controller. Comparative analyses are performed for the ship without and with the dynamic fin stabilizer control system, both through numerical calculations and experiments.The results of the numerical calculations show that the standard deviation values for the ship without and with the control system are 4.855 and 1.766, respectively, indicating a reduction in the ship's roll motion by up to 64.09 percent. Meanwhile, the results of the experimental testing yield standard deviation values of 9.47 and 6.134 for the ship without and with the control system, respectively, showing a reduction in the roll angle by up to 35.17 percent. The difference in percentage of reduction is attributed to the limitations of the experimental environment.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	gerak roll kapal, fin stabilizer, PI/PID controller
Subjects:	V Naval Science > V Naval Science (General) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	RASYAD ATHAYA ABIMANTO
Date Deposited:	15 Nov 2023 07:30
Last Modified:	15 Nov 2023 07:30
URI:	http://repository.its.ac.id/id/eprint/104028

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