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NONLINEAR CONTROL OF UNMANNED SURFACE VEHICLE Hasnawiya Hasan
Jurnal Riset Teknologi Kelautan Vol. 14 No. 1 (2016): Jurnal Riset Teknologi Kelautan (JRTK)
Publisher : Jurnal Riset Teknologi Kelautan

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Abstract

An Unmmaned Surface Vehicle is a marine vehicle which has a complicated nonlinear model and partially uncertain parameters in its model. Therefore, an USV needs an advance control technique to solve this complicated problem.  Nonlinear control is the most suitable technique to control this model. Nonlinear control is less sensitive to parameter uncertainty and disturbance perturbation which is beneficial for Unmanned Surface Vehicle which has highly disturbance parameter perturbation also. In the previous work, a disturbance model has never been considered in the control process due to highly perturbation in the model. Therefore, this work take account of the disturbance factors of Unmanned Surface Vehicle model.
DESAIN KONFIGURASI SISTEM PROPULSI HYBRID TERHADAP PENGURANGAN KONSUMSI BBM KAPAL PENANGKAP IKAN 30 GT (Configuration Design of a Hybrid Propulsion System to Reduce Fuel Oil Consumption of a 30 GT Fishing Vessel) Andi Haris Muhammad; . Baharuddin; Hasnawiya Hasan
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 10 No. 1 (2019): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (895.008 KB) | DOI: 10.29244/jmf.10.1.1-9

Abstract

This study aims to reduce fuel oil consumption of a 30 GT fishing vessel through configuration design of diesel and electric motor hybrids propulsion system. The configuration design of hybrids propulsion system systematically include; i) loading assumption; ii) prediction of speed-thrust; iii) prediction of fuel oil consumption. Design of hybrids propulsion system was analyzed by using the concept of time domain simulation of vessel movement. The result indicated that the hybrids propulsion system implemented to fishing vessel was very effective to reduce fuel consumption compared with conventional propulsion system, especially in variation of loading and speed condition.Keywords: fishing vessel, hybrids propulsion system and fuel oilPenelitian ini bertujuan untuk mengurangi konsumsi bahan bakar minyak kapal penangkap ikan 30 GT melalui desain konfigurasi sistem propulsi hybrid diesel-listrik. Secara sistematis perancangan sistem propulsi hybrid meliputi; i) asumsi pembebanan operasi; ii) prediksi speed-thrust; iii) prediksi konsumsi bahan bakar. Desain sistem propulsi hybrid dianalisis dengan menggunakan konsep time domain simulation pergerakan kapal. Hasil penelitian menunjukkan bahwa penggunaan sistem propulsi hybrid pada kapal penangkap ikan sangat efektif dalam mengurangi konsumsi bahan bakar dibandingkan dengan sistem propulsi konvensional, terkhusus pada kondisi pemuatan dan kecepatan yang bervariasi.Kata kunci: Bahan bakar, kapal penangkap ikan, sistem propulsi hybrid
Desain Kriteria Propeller Clearance Kapal Tradisonal Tipe Pinisi Terhadap Efisiensi Propulsi Andi Haris Muhammad; Hasnawiya Hasan; Jusman Jusman
Jurnal Penelitian Enjiniring Vol 20 No 1 (2016)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

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Abstract

Sistem propulsi terdiri dari tiga bagian pokok yaitu: penggerak utama, sistem transmisi dan alat penggerak kapal (propeller), perancangan ketiga bagian ini sangat bergantung dari bentuk lambung kapal, khususnya area kerja propeller. Permasalahan klasik yang umumnya timbul dalam perancangan sistem propulsi adalah tidak tercapainya kecepatan operasi yang direncanakan atau rendahnya efisiensi propulsi yang dihasilkan. Fenomena ini juga banyak dialami kapal-kapal yang dibangun secara tradisional. Penelitian ini adalah kajian desain kriteria propeller clearance pada kapal tradisional tipe pinisi, khususnya terhadap peningkatan efisiensi propulsi kapal. Pengujian daya dorong kapal dilaksanakan pada tangki tarik dengan model panjang 1,2 m (skala 1/35). Hasil penelitian dengan metode gravitasi menujukan bahwa besaran daya dorong yang dihasilkan sangat bergantung pada jarak peletakan propeller. Daya dorong optimal terjadi pada jarak 1,5 m dari poros linggih, harga tersebut akan berkurang sesuai penambahan/pengurangan jarak tersebut. Tidak optimalnya thrust yang dihasilkan pada kondisi peletakan normal (jarak antara 0.35 – 0.7 m dari linggih poros) dikarenakan sudut kemiringan antara waterline dan longitudinal axis lambung kapal bagian buritan kapal melebihi ketentuan yang disyarakan.
Website-Based Digitalization of Fisheries MSMEs in Puntondo Village, Takalar Regency Hasnawiya Hasan; Muhammad Alief Fahdal; Haliah .; Imran Oemar; Idayanti .; Surya Haryanto; Muhammad Afrial Ivan Pratama
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 2 (2025): Collaboration for Accelerated Community Achievement
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i2.596

Abstract

The fishing community in Puntondo Village, Takalar, relies heavily on income generated from the INS MSMEs. However, their business activities remain relatively simple and have yet to leverage digital markets [1], which limits their distribution reach, operational efficiency, and marketing effectiveness. The aim of this community service program is to transform the fisheries sub-sector—specifically the INS Fisheries MSMEs in Takalar—from a conventional system into a website-based digital system. Digitalization is utilized to address issues such as lack of clarity, limited market coverage, operational inefficiency, competitiveness, and customer trust. As a result, the digitalization of the fisheries sector through website integration is expected to significantly enhance operational efficiency, revenue generation, and consumer confidence. Information technology and digitalization are crucial for the continued development of fisheries-based MSMEs, which in turn can improve the coastal economy [2]. This transformation has a profound impact on digital branding, marketing strategies, and information transparency. Accordingly, management training, technology mentoring, inventory system integration, and online marketing have been carried out. Several case studies have shown improvements in market reach, transaction speed, and the professional image of INS MSMEs. The website aids in product distribution and SEO optimization, thereby enhancing credibility. Additionally, the INS MSME is the central subject in outreach efforts involving local fishermen and communities. The observation method includes analysis of sales activities before and after the website launch, as well as monitoring of website usage and consumer engagement online. The analytical method comprises a qualitative analysis of the digitalization program’s impact on micro, small, and medium enterprises (MSMEs), including changes in market reach, operational efficiency, and customer perception, along with empirical comparisons through case study analysis. The primary output of this program is a dedicated MSME website for promotion and transactions, designed around a digital inventory management system, SEO-based marketing, and strengthened customer engagement through social media. This aligns with community development theories, particularly the empowerment of coastal communities through technological and interdisciplinary (technical and economic) approaches to MSME growth. In the results and discussion section, it is described that the main outcome is a functional, SEO-friendly website, which has significantly expanded its national market reach and improved transactional efficiency by reducing manual errors. The specific impacts of the program include enhanced operational efficiency, online ordering, real-time inventory tracking, increased product visibility on Google and e-commerce platforms, improved credibility through customer testimonials, and higher MSME revenue. More significantly, the program has opened opportunities for partnerships with investors and business collaborators, allowing MSMEs to compete digitally with larger platforms. In conclusion, collaboration through digitalization has proven to enhance MSME competitiveness and create partnership and investment opportunities. Nevertheless, challenges such as limited infrastructure and data security threats remain. Therefore, website-based digitalization of fisheries MSMEs is highly effective in advancing the local economy, expanding market reach, and ensuring the sustainability of operational efficiency.