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Journal : Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC)

Optimasi Waktu Akuisisi Data Satelit Noaa18 Menggunakan Jaringan Syaraf Tiruan Backpropagation Anis Maghfirotul Habibah; Ibrahim Nawawi; Ika Setyowati
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 3, No 1 (2021): February
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v3i1.786

Abstract

Earth stations are built to monitor the presence of satellites starting from satellite data, monitoring satellites, and carry out orders and corrections if needed. On the earth station there is a satellite data receiving antenna, the more elevation angle of the current satellite data receiver antenna can affect the time duration of the satellite data. The purpose of this research is to apply the Artificial Neural Network (ANN) method to design a time optimization system for satellite data at the LAPAN Pekayon earth station, East Jakarta. The data used as input is the elevation angle. The benefit of this research is expected to make it easier for operators and technicians to measure the time optimization of satellite data at earth stations. The best training results with learning rate = 0.2, error = 0.0001, max. epoch = 100000, neuron hidden layer = 15. The MSE value obtained is 0.0001 reaching the goal at epoch 68810. Regret the training / training reverse sequence reaches 0.99878. The best test result is to use learning speed 0.2 hidden layer neurons 15 comparison of training data = 54 and test data = 18. The accurate result is exactly the same as the specified error, namely 0.0001. The difference in the average target duration is 3 seconds compared to the ANN target. Artificial Neural Network (ANN) with the back propagation method of training function gradient descent (traingd), was successfully used to an optimization system for satellite data acquisition time at earth stations.
Implementasi Logika Fuzzy pada Kekuatan Sinyal yang Diterima Antena Viasat X-Band Afif Nuur Hidayat; Bagus Fatkhurrozi; Ibrahim Nawawi
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 2, No 2 (2020): August
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v2i2.732

Abstract

The data that the antenna receives during satellite data acquisition has a signal strength that is affected by the antenna's movement at an elevation and azimuth angle. Every change in the two angles causes the signal strength received by the antenna to change. Signal strength calculation is important to be able to ensure satellite data is received well. Fuzzy Mamdani's logic as a method that can be used to calculate uncertain variables will be implemented in the calculation of the signal strength received by the Viasat X-Band antenna when the acquisition process of Aqua satellite data takes place. The results of the calculation of fuzzy mamdani logic by testing 6 signal strength data obtained from the Aqua satellite track analysis owned by LAPAN are shown in the percentage of errors, among others: DOY 197 of 1.33%; DOY 213 by 2.89%; DOY 259 of 1.93%; DOY 304 of 1.18%; DOY 320 by 4.73%; and DOY 357 of 2.27% and the average error (overall) of the entire data tested was 2.39%. This shows that the mamdani fuzzy logic is suitable for use in calculating the signal strength received by the Viasat X-Band antenna.
Pengukuran Daya Listrik Menggunakan Penguat Common Emitter dan Komparator Arif Wahyu Wibowo; Ibrahim Nawawi; Dwi Novianto
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 5, No 1 (2023): February
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v5i1.1433

Abstract

Penelitian ini merancang alat ukur daya listrik satu fase. Variabel yang diukur adalah tegangan, arus, frekuensi, faktor daya, daya semu, daya aktif dan daya reaktif. ZMPT101B dan SCT013-005 digunakan sebagai transduser tegangan dan arus. Luaran transduser dikuatkan dengan Penguat Common Emitter. Frekuensi diukur dengan metode Zero Crossing sedangkan beda fase diukur dengan membandingkan gelombang tegangan dan arus dengan rangkaian komparator dan XOR. Hasil pengukuran, dibandingkan dengan hasil pengukuran Power Quality Hioki 3286.  Dari pengujian, diperoleh persentase rata-rata galat (error) tegangan 0,26%, arus 2,44%, frekuensi 0,32% dan beda fase sebesar 7,19%. Selain dibandingkan dengan alat ukur acuan, hasil pengukuran juga dibandingkan dengan hasil perhitungan dengan persentase galat rata-rata daya semu 0,44%, daya aktif 0,8% dan daya reaktif sebesar 0,44%.
Perancangan Pembangkit Listrik Tenaga Surya (PLTS) Atap On-Grid 44 kWp untuk Melayani Beban Penerangan di Industri Wibowo, Kristianto Agung; Pravitasari, Deria; Kurniawan, Andriyatna Agung; Nawawi, Ibrahim
Aviation Electronics, Information Technology, Telecommunications, Electricals, and Controls (AVITEC) Vol 6, No 2 (2024): August
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v6i2.2194

Abstract

Saat ini pemerintah terus mendorong masyarakat untuk memanfaatkan EBT di Indonesia untuk mencapai target bauran sebanyak 23 % di tahun 2025. Pada penelitian ini dilakukan perancangan PLTS atap on-grid pada salah satu industri yang bergerak di bidang pengolahan bahan pangan hewani. PLTS digunakan untuk melayani beban penerangan dengan standar kelayakan mengikuti panduan EBTKE ESDM (SNI 8395:2017) dan sistem instalasi pemasangan berdasarkan PUIL 2011. Berdasarkan hasil perancangan digunakanlah modul surya jenis monocrystalline 410 Wp sebanyak 108 unit dan satu unit inverter 40 kW yang menghasilkan energi sebesar 63.032,58 kWh/tahun dan pengurangan emisi gas karbon dioksida (CO2) sebanyak 78.790,725 ton/tahun. Hasil kelayakan ekonomi dengan investasi awal Rp. 548.890.000, menghasilkan NPV Rp. 72.019.012, BCR 1,11, dan payback period pada tahun ke-18. Hasil tersebut menunjukkan bahwa PLTS dapat melayani beban penerangan dan melakukan penghematan energi listrik sebesar penggunaan beban penerangan harian di industri.