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All Journal Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam RESISTOR (Elektronika Kendali Telekomunikasi Tenaga Listrik Komputer) JE-Unisla Jurnal Teknika E-Link: Jurnal Teknik Elektro dan Informatika InPrime: Indonesian Journal Of Pure And Applied Mathematics Jurnal Abdimas Berdaya : Jurnal Pembelajaran, Pemberdayaan dan Pengabdian Masyarakat Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat SinarFe7 Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri Jurnal Ilmiah Teknik Informatika dan Komunikasi Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Pemberdayaan Masyarakat: Jurnal Aksi Sosial BIOTROPIC
Ulul Ilmi
Department Of Electrical Engineering, Universitas Islam Lamongan, Lamongan
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Moving Horizon State Estimation for Linear System with Application to Autonomous Vehicle Purnawan, Heri; Ilmi, Ulul; Faroh, Rifky Aisyatul; Ar Rizqi, Ahmad Bustanul Ali; Resmi, Fitroh
InPrime: Indonesian Journal of Pure and Applied Mathematics Vol 5, No 1 (2023)
Publisher : Department of Mathematics, Faculty of Sciences and Technology, UIN Syarif Hidayatullah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/inprime.v5i1.28313

Abstract

AbstractThis paper proposes moving horizon estimation (MHE) to estimate the state variables of autonomous vehicle linear systems under measurement noises. To solve the MHE optimization problem, quadratic programming is employed. The steering angle, yaw angle, and global position constraints of an autonomous vehicle are considered in the estimation design. According to the simulation results, it can be observed that although the longer MHE step can give better results compared to the shorter MHE step, the difference in the MHE step only slightly affects the estimated results. However, the longer MHE step can increase the computational time. Additionally, the proposed MHE scheme is compared to the Kalman filter (KF) estimator. Based on the obtained results, the KF gives a better estimation than the MHE, but this notion must be verified for other case studies.Keywords: autonomous vehicle; Kalman filter; linear system; MHE; quadratic programming. AbstrakPaper ini mengusulkan moving horizon estimation (MHE) untuk mengestimasi variabel keadaan sistem linier kendaraan otonom karena pengaruh noise pengukuran. Untuk menyelesaikan masalah optimasi MHE, digunakan pemrograman kuadratik. Kendala sudut kemudi, sudut yaw dan posisi global dari kendaraan otonom dipertimbangkan dalam desain estimasi. Dari hasil simulasi dapat diketahui bahwa meskipun langkah MHE yang lebih panjang dapat memberikan hasil yang lebih baik dibandingkan dengan langkah MHE yang lebih pendek, perbedaan langkah MHE hanya sedikit mempengaruhi hasil estimasi. Namun, langkah MHE yang semakin panjang dapat meningkatkan waktu komputasi. Selain itu, skema MHE yang diusulkan dibandingkan dengan estimator Kalman filter (KF). Berdasarkan hasil yang diperoleh, KF memberikan estimasi yang lebih baik daripada MHE, tetapi gagasan ini harus diverifikasi untuk studi kasus lainnya.Kata Kunci: kendaraan otonom; Kalman filter; sistem linier; MHE; pemrograman kuadratik. 2020MSC: 62P35, 65D19
A Study of Mathematical Problems as Control Agents in the Industrial Sector Ilmi, Ulul; Rifky Aisyatul Faroh
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 21 No. 2 (2024): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v21i2.16282

Abstract

PD Utama Jaya Plasindo, a company specializing in plastic pellet processing, faces several production challenges, such as fluctuating demand, raw material shortages, machinery downtime, and labor management. To address these issues and improve production planning, the company uses MATLAB's linprog tool, which is designed for Linear Programming (LP) and aims to maximize profits. The company's profit is calculated using the formula: Profit = 37A + 46B + 38C + 46D. This calculation takes into account seven constraints related to raw materials, machinery usage, labor hours, and product demand. With this method, PD Utama Jaya Plasindo earns a daily profit of Rp. 837,600 from its plastic buckle products, totaling Rp. 16,752,000 over 20 working days in a month. These profit figures, based on clear objectives and constraints, help ensure that production goals are met and facilitate the monitoring and optimization of production capacity. By leveraging MATLAB's linprog, the company can better manage demand fluctuations and optimize the use of raw materials, machinery, and labor.
Teaching to Display Text, Symbols, and ASCII Images Using Turbo Pascal to First-Semester Electrical Engineering Students Ulul Ilmi; Mochammad Sholikhin
Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri Vol. 4 No. 2 (2025): Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri
Publisher : Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/sejahtera.v4i2.2929

Abstract

This community service activity aims to help first-semester Electrical Engineering students improve their understanding of basic programming concepts using Turbo Pascal, with a focus on displaying text, symbols, and ASCII-based images. The approach combines both theoretical instruction and hands-on practice. Students receive materials covering the use of the Write and Writeln functions in Turbo Pascal, as well as techniques for creating simple text-based images using ASCII characters. The results show that most students have successfully grasped the material, created basic programs, and actively participated in the training sessions. This activity is designed to strengthen the programming foundation of Electrical Engineering students, providing a solid base for further development of their programming skills.
Penyelesaian Rangkaian Listrik Menggunakan Invers dan Eliminasi Gauss Berdasarkan MATLAB Ulul Ilmi; Zaenal Abidin; M. Lais Shofil Muna; Muhammad Aflah Kafabi; Nafik Burhanudin; Ahmad Faizin; Faried Nur Imanudin; Mudafiqil Ilmi
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 4 (2025): Juli: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i4.931

Abstract

Solving electrical circuits often requires finding solutions to systems of linear equations, which are derived from fundamental laws like The laws of Kirchhoff and Ohm's law. In this study, two widely known numerical methods are used to solve these systems, Gaussian elimination and matrix inversion. Both methods are applied to the linear equations that represent the electrical circuit network. MATLAB is used to model and solve the circuits with these techniques, making the calculations more efficient and accurate. By employing both methods, we can solve systems of equations for various circuit configurations, determining the voltage and current values for each component. The results demonstrate that both methods are reliable and fast, providing valuable insights for electrical engineering and circuit analysis.
Pengembangan Program MATLAB OHM1.m sebagai Media Pembelajaran Hukum Ohm Ulul Ilmi; Achmad Febrian Erdiansyah; Ahmad Fuad Al Arsyad; Dani Syauqi Sudrajat; Eep Syaifullah Yusuf; Hasip Saifullah; Khaifal Fahrully Khafid Aryadianto
Jurnal Ilmiah Teknik Informatika dan Komunikasi Vol. 5 No. 3 (2025): November: Jurnal Ilmiah Teknik Informatika dan Komunikasi 
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juitik.v5i3.1600

Abstract

The research presents an examination of Ohm’s Law in practice through the development of a simple MATLAB-based program named OHM1.m. The program is designed to calculate the electric voltage based on the current and resistance values entered by the user. The program structure consists of a few concise lines of code, including screen clearing, variable initialization, input retrieval, voltage calculation using the equation V = I x R, and formatted result presentation. The analysis shows that the program has several advantages, such as simplicity, interactivity, organized output, and strong relevance to education. Nevertheless, some limitations exist, including the absence of input validation, lack of batch data support, and the unavailability of graphical visualization. Potential enhancements include adding input validation, integrating V–I plotting, supporting vector input, and developing a graphical user interface (GUI). The program execution results are consistent with Ohm’s Law theory, making it an effective learning tool for both Electrical Engineering and Informatics students. Therefore, this program can serve as a foundation before progressing to more complex circuit simulations.
Penerapan Sistem Maintenance Berkala pada Mesin Premoulding Hidrolik Press di PT MK Prima Indonesia melalui Kegiatan Praktik Kerja Nyata Ulul Ilmi; Eko Vibi Nurwansyah
Pemberdayaan Masyarakat : Jurnal Aksi Sosial Vol. 2 No. 4 (2025): Desember: Pemberdayaan Masyarakat : Jurnal Aksi Sosial
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/aksisosial.v2i4.2421

Abstract

The Field Work Practice (PKN) carried out at PT MK Prima Indonesia focused on the implementation of periodic maintenance practices for the premoulding hydraulic press machine as an effort to maintain machine performance and operational lifespan. The main activities included identifying critical components such as the hydraulic system, valves, pressure hoses, and oil filters; conducting direct observation of common disruptions; and performing daily maintenance checklists that covered pressure monitoring, operating temperature, leakage detection, machine cleanliness, and lubrication conditions. Comprehensive cleaning procedures, condition-based filter replacement, and functional testing were also conducted to ensure reliability and safety in the production process. The implementation methods involved participatory observation, interviews with technicians regarding common failure patterns, visual and functional inspections, as well as the use of structured checklists supported by inspection documentation. The results indicate a significant decrease in the frequency of disturbances caused by leaks and oil contamination, improved compliance with routine inspection procedures, and enhanced machine readiness during operations. The introduction of structured documentation and simple technical training further improved technicians’ ability to detect early signs of abnormalities in the hydraulic system. As a recommendation, the company is advised to strengthen the use of digital recording systems, adjust filter replacement intervals based on actual machine conditions, and implement regular training programs focusing on contamination control and predictive maintenance.
Sistem Keamanan Sepeda Motor menggunakan Modul GPS Neo-7M, Selenoid Key Berbasis ESP8266 Abdur Rohman Wakhid; Ulul Ilmi; Affan Bachri; Rifky Aisyatul Faroh; Eko Wahyu Santoso; Gilbran Bintang Erlangga
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 5 No. 1 (2026): April: Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v5i1.7432

Abstract

Motorcycle theft remains a widespread issue that demands improved security solutions supported by modern technology.This research discusses the development and implementation of a motorcycle security system design using an ESP8266 microcontroller integrated incorporating the GPS Neo-7M positioning module, SW-420 vibration detection sensor, and an electronically controlled solenoid lock. The implemented mechanism is monitored and controlled via the Telegram application, allowing the owner to receive real-time updates about the motorcycle’s status through a Telegram Bot. The development process involves hardware integration, ESP8266 programming, and functional testing. The SW-420 sensor detects vibrations as indicators of possible theft, triggering a buzzer alarm and sending instant notifications through Telegram. The GPS Neo-7M module provides location data in real time, automatically or upon user request, through a Google Maps link. Users can also lock or unlock the motorcycle remotely by sending the lock or /unlock commands via Telegram. Test results show that the system responds to vibrations in less than one second, delivers Telegram notifications within 3–5 seconds, and determines location with an accuracy of 3–10 meters. Overall, the proposed system offers an effective, practical, and low-cost solution to enhance motorcycle security.
Utilization of Rice Straw, Micro-organisms Effective and Probiotics to Replace Chemical Fertilizers in Fishing Enterprises Ulul Ilmi; Affan Bachri
Biotropic : The Journal of Tropical Biology Vol. 2 No. 1 (2018): Biotropic, Volume 2, Nomor 1, 2018
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/biotropic.2018.2.1.41-45

Abstract

Rice straw is a by-product obtained from the harvest of rice. The purpose of this research is to process rice straw into organic fertilizer so it can be used as food source for fishery business. The method used is the experimental method in the field. The results of research that has been done is processing of rice straw able to produce Nitrate (NO3) and zooplankton as a source of organic material that serves as a source of food for fish so that rice straw can serve as a substitute for chemical fertilizer in the fishery business area. By using organic materials, then the fishery business results are more hygienic for consumption and can improve the fishery business.
Co-Authors Abdur Rohman Wakhid Achmad Aminul Muklis Achmad Febrian Erdiansyah Affan Bachri affan Bachri Affan Bachri Ahmad Faizin Ahmad Fuad Al Arsyad Amri, Sholihul Ar Rizqi, Ahmad Bustanul Ali Arief Budi Laksono Arief Budi Laksono Ayu Ismi Hanifah Bachri, Affan Cahyo, Wahyu Dwi Dani Syauqi Sudrajat Eep Syaifullah Yusuf Eka Prastiawan, Muhammad Irvany Eko Vibi Nurwansyah Eko Wahyu Santoso Faizal Qurnia Afandi Faried Nur Imanudin Fifiana Putri Suwenda Gilbran Bintang Erlangga Hasip Saifullah Hidayat, Faruq Dwi Fahrul Insani Abdi Bangsa Karimatun Nisa Khaifal Fahrully Khafid Aryadianto Laksono, Arief Budi M. Lais Shofil Muna M. Ruinaldi Pratama M. Ruinaldi Pratama Masruroh Mochammad Sholikhin Mohammad Fajrul Karim Mu'azaidin Nur Kusna Mudafiqil Ilmi Muhammad Aflah Kafabi Muhammad Mursal Fikri Mukhoyyaroh, Nur Indah Nafik Burhanudin Nahdia Rupawanti Ni’am, Wafirun Prasetyo, M. Romadhoni Eko Purnawan, Heri Qidam Agwalul Santoso Ratna Ratna Resmi, Fitroh Rifky Aisyatul Faroh Santoso, Eko Wahyu Saputra, M. Bayu Irwan Sauthul Fikri Sukardi Sukardi Syaiful Hartono Wahid Syaiful Hartono Wahid Tamaji, Tamaji Utomo, Heru Prasetio Wakhid, Abdur Rohman Waliuddin, Aubait Yoga Alif Utama Zaenal Abidin Zainal Abidin Zainal Abidin Zainal Abidin Zainal Abidin