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All Journal IPTEK The Journal of Engineering Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Jurnal ELTEK JIPOWER : Journal of Intellectual Power
Hendro Nurhadi
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IMPLEMENTASI ENSEMBLE KALMAN FILTER PADA ESTIMASI GERAK PROYEKTIL DI BAWAH PENGARUH FAKTOR TEMPERATUR DAN KECEPATAN ANGIN Diah Agustin; Erna Apriliani; Hendro Nurhadi
Jurnal Nasional Aplikasi Mekatronika, Otomasi dan Robot Industri (AMORI) Vol 1, No 1 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1120.529 KB) | DOI: 10.12962/j27213560.v1i1.6661

Abstract

Abstrak—Proyektil merupakan bagian dari peluru yang meluncur di udara akibat adanya ekspansi termal yang terjadi di dalam selongsong. Salah satu jenis kaliber proyektil yang dikenal mempunyai daya hancur cukup tinggi adalah proyektil kaliber 12,7 × 99 mm. Dalam gerak proyektil yang sangat cepat di bawah pengaruh faktor temperatur dan kecepatan angin, diperlukan suatu estimasi untuk memperkirakan gerak proyektil agar dapat mencapai target dengan tepat. Oleh karena itu, pada tugas akhir ini dilakukan estimasi gerak proyektil di bawah pengaruh faktor temperatur dan kecepatan angin.menggunakan metode Ensemble Kalman Filter. Selanjutnya hasil dari simulasi metode Ensemble Kalman Filter dilakukan perbandingan dengan menggunakan metode Kalman Filter yang bertujuan untuk mengetahui keunggulan dari estimasi EnKF. Hasil akhir menunjukkan bahwa estimasi EnKF lebih baik dalam mengestimasi gerak proyektil dengan ditunjukkan persentase akurasi estimasi EnKF adalah 93.96 % untuk variabel V1, 97.54 % untuk variabel V2, dan 66.10 % untuk variabel V3.
SIMULASI DAN EKSPERIMEN KONTROL AUTOMATIC TURRET GUN Mohamad Nasyir Tamara; Bambang Pramujati; Hendro Nurhadi; Endra Pitowarno
JURNAL ELTEK Vol 16 No 1 (2018): ELTEK Vol 16 No 1
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1410.9 KB) | DOI: 10.33795/eltek.v16i1.82

Abstract

This research presented Active Force Control (AFC) as a control method which is applied to Automatic Turret gun (ATG) in ground combat vehicles This method compares the reference force conducted by actuator with actual force of the mechanical systems that arise due to disturbances. The advantage of AFC method is its ability to handle disturbances effectively without complicated mathematical calculations. The AFC method uses Crude Approximation (CA) in the internal loop controller AFC as inertia matrix estimator as an important part in the control loop. Simulation without load on the azimuth movement shows PID controller produces the best precision with MSE of 0 degrees while RACAFC and RAC method provide MSE 0.267 degrees. In simulation on the elevation movement, the RAC method showed the best results with an estimated MSE of the targets shot of 2.42 degrees, while the PID and RACAFC method are 2.5 and 2.46 degrees. When simulation is conducted with additional load RACAFC method gives the best precision with a MSE of 0.267 and 2:46 degrees, while the PID method was 4.24 and the 10.52 degrees. RAC method produces MSE of 0.7 and 2.87 degrees. With the added load the performance of PID controller decreases. In the experiment on the constructed rig, RAC and RACAFC scheme produce smoother movement trajectory and minimum oscillation compared to the PID controller. In loaded conditions these methods are able to maintain their performance. However, these three methods can still achieve a reference point with or without load in the end of travel time
Workability Analysis of 3D Printing Materials for Applications in The Construction Industry Yuyun Tajunnisa; Ridho Bayuaji; Hendro Nurhadi; Beta Rahayuning Pratiwi
IPTEK The Journal of Engineering Vol 9, No 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v9i2.a16185

Abstract

The development of 3D Printing machine technology as a printing tool that uses an additive manufacturing method system with the aim of producing a three-dimensional (3D) object or object according to the default digital design file. 3D Printing was created to facilitate construction work, with 3D Printing construction work becoming lighter because this tool saves time, and costs, and reduces the risk of work accidents. With 3D Printing, work runs quickly and avoids problems in the development process. In the last few decades, many developed countries have used 3D Printing technology in making buildings. The 3D printing process basically consists of three different stages namely, data preparation, material preparation and transfer to the printer, and the printing stage. In the data preparation stage, the components are designed as 3D CAD models, then converted to STL (Stereolithography) format and sliced with the desired layer depth. The preparation of concrete involves mixing and placing it into a container. Once fresh concrete has been placed into the container, it can be channeled smoothly through a pump-pipe-nozzle system to print self-compacting concrete filaments, which build structural components layer by layer. The material used in this 3D printing method was Portland cement where this cement is easy to find among the public. Portland cement itself is the cement that is commonly used as a basic material for making concrete, plaster, mortar, and non-specialized mortar. In addition, fly ash and silica fumes are also added as a mixture. The addition of silica fumes increases the compressive strength of concrete. Furthermore, the addition of fly ash to the concrete has the effect of reducing drying shrinkage; but reducing the compressive strength of the concrete. In this study, the author focuses on the workability of 3D Printing concrete materials, and the impact of the material was added with additional type C fly ash and silica fume, namely flowability. The result is a concrete mix design that has good flowability value to be applied to the 3D Printing method
STUDY OF DIESEL POWER PLANT REPLACEMENT WITH AN OFF-GRID SOLAR PHOTOVOLTAIC SYSTEM Gustiyadi Fathur Rahmandi; Atok Setiyawan; Hendro Nurhadi
JIPOWER : Journal of Intellectual Power Vol. 2 No. 03 (2025): December 2025 - Maret 2026
Publisher : Yayasan Inspirasi Merah Putih Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63786/jipower.v2i03.63

Abstract

The electrification ratio on the island of Kalimantan has increased significantly from 2014 to 2024, significantly impacting people's lives, especially in Central Kalimantan Province. North Barito Regency is one of the regions that continues to strive to meet the electricity needs of its residents who still lack access to electricity, especially in the 3T (Outermost, Frontier, and Disadvantaged) areas through the Electrification Ratio (RE) program. This vast area presents a unique challenge in ensuring the equitable distribution of electricity to these 3T areas. To meet the National RE target and utilize the various types of power plants currently available in North Barito Regency, as well as to support the transition to New and Renewable Energy (EBT), PLN is connecting the existing electricity grid to the new grid through a network expansion scheme in urban areas. Meanwhile, in the 3T areas, renewable energy is being utilized, such as the construction of solar power plants (PLTS) capable of providing a 24-hour electricity supply. The main obstacles facing PLN (State Electricity Company) in Kalimantan in implementing this RE program include inadequate road access and road conditions for transporting electricity grid infrastructure materials, weather conditions (rain can slow work progress), and permits for 20 kV electricity grid infrastructure from individuals, groups, organizations, or business entities. This research will outline a plan to replace diesel-powered plants (PLTD) with off-grid solar power plants (PLTS) as a renewable energy source, taking into account operating load patterns and the efficiency of the solar power plants, based on the PV panel materials used: monocrystalline and polycrystalline. It is hoped that this study will provide information on the impact of PLTS development on the existing electricity system, enabling PLN to be more efficient in supporting the achievement of a 23% renewable energy mix by 2025.
TECHNO-ECONOMIC ASSESMENT OF REPLACING DIESEL POWER PLANTS WITH OFF-GRID SOLAR PHOTOVOLTAIC SYSTEMS IN REMOTE ELECTRIFIED VILLAGES: A CASE STUDY OF GUNUNG PUREI, INDONESIA Gustiyadi Fathur Rahmandi; Atok Setiyawan; Hendro Nurhadi
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 2 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18491819

Abstract

The electrification of remote and isolated areas remains a major challenge in Indonesia, particularly in 3T (Outermost, Frontier, and Disadvantaged) regions that still rely on diesel power plants with limited operating hours. This study evaluates the technical and economic feasibility of replacing an existing diesel power plant (PLTD) with an off-grid solar photovoltaic (PV) system integrated with battery energy storage at the Gunung Purei Village Electricity Unit (ULD), Central Kalimantan.The proposed system is designed to transform a 14-hour diesel-based operation into a continuous 24-hour electricity supply. Technical analysis was conducted using PVsyst to assess energy production and performance ratio (PR), while economic feasibility was evaluated using HOMER Pro through indicators such as Net Present Value (NPV), Levelized Cost of Energy (LCOE), Profitability Index (PI), and Discounted Payback Period (DPP). The study compares monocrystalline and polycrystalline PV modules under different battery autonomy scenarios.Results show that the optimal configuration consists of a 588 kWp off-grid solar PV system using 940 monocrystalline PV modules, five 100 kW inverters, a 500 kW power conversion system, and 27 battery sets with a total capacity of 2.94 MWh (one-day autonomy). This configuration achieves a performance ratio of 34.78% and satisfies the annual load demand of 896.19 MWh. From an economic perspective, the system is feasible, yielding a positive NPV of IDR 8.36 billion, a PI of 1.30, and a DPP of 24.77 years.The findings confirm that off-grid solar PV–battery systems using monocrystalline modules provide a technically reliable and economically viable solution for replacing diesel generation in remote electrified villages, while supporting Indonesia’s renewable energy mix target of 23%.
Co-Authors Atok Setiyawan Bambang Pramujati Beta Rahayuning Pratiwi Diah Agustin Endra Pitowarno Erna Apriliani Gustiyadi Fathur Rahmandi Mohamad Nasyir Tamara Ridho Bayuaji Yuyun Tajunnisa