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Majalah Ilmiah Teknologi Elektro
Published by Universitas Udayana
ISSN : 16932951     EISSN : 25032372     DOI : https://doi.org/10.24843/MITE
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Majalah Ilmiah Teknologi Elektro (MITE) is peer review journal, published twice a year by the Study Program of Magister Electrical Engineering, Faculty of Engineering, Universitas Udayana. This journal discusses the scientific works containing results of research in the field of electrical, include power systems, telecommunications, informatics, and electronics. Authors are expected to include original scientific papers in accordance with the scope of the discussion of this journal including all aspects of the theory and practice are used.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 611 Documents
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SISTEM VERIFIKASI SIDIK JARI DENGAN METODE PENCOCOKAN BERBASIS BANK GABOR FILTER A.A. K. Oka Sudana; D. M. Wiharta; Mahardhika Tirta
Jurnal Teknologi Elektro Vol 5 No 2 (2006): (July - December) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

Many cases of fraud are exposed where someone, claiming to be someone else attempts to accesssomething. This situation challenges us to create a system that is both reliable and trustworthy to verify someone’sidentity. A biometric system represent an automatic recognition system based on the physiological characteristicsand/or behaviors of the human being. One of these biometric system is fingerprint recognition. Fingerprint verification system is a system to verify a human fingerprint according to the identity which has been claimed. Thusfingerprint image input is compared with the reference fingerprint image which has been kept in a database,according to the given identity. On this research, the Gabor Filter Bank-based Fingerprint Matching Method is used to extract the image features.On application, one of sample image will be matched with one of the database reference image. First, before matching, the sample image features need to be calculate using the aforementioned method. The resulting matchingprocess will find a reference image which has the shortest Euclidean distance with the sample image. This matchingprocess will only succeed if the sample image and the reference image are from the same person. Images used inthis research are fingerprint images with dimension 191 x 191 pixels. This research is looking for the successful rateand the burst time on the verification process. Result of the system testing show that Gabor Filter Bank Method canprovide high enough success level i.e. 95%. The items influence success level are subject to quality of fingerprint image and accuracy to find a reference point/core point, Similarity between query image and reference image is determined by projection distance both of images, and also threshold value is used to decide whether this image isvalid or not.
AN OVERVIEW OF UMTS AND WIMAX NETWORKS INTEGRATION Dewi Wirastuti
Jurnal Teknologi Elektro Vol 9, No 2 (2010): (July - December) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

This paper gives an overview of the network integration of UMTS (Universal Mobile TelecommunicationSystem) with WiMAX (Wordwide Interoperability of Microwave Access). A few proposed interworking solutionsand seamless integration of both networks are explained. The best architecture and key procedures that will enablethe integration both networks and handover mechanism for the seamless mobility are presented. Considering thetrend of the current network evolution, which is the convergence between the telecommunications and broadcastworlds, an integration of mobile WiMAX with present 2G, 2.5G or 3G accesses into a homogeneous architecturegoes a long way to achieve the reality of mobile broadband networks. With the advent of mobile WiMAX, a mobilebroadband wireless access solution and based on all-IP (Internet Protocol) based OFDMA (Orthogonal FrequencyDivision Multiple Access) technology, an UMTS-WiMAX
Penggunaan Metode Naïve Bayes Classifier pada Analisis Sentimen Facebook Berbahasa Indonesia Putu Sri Merta Suryani; Linawati Linawati; Komang Oka Saputra
Jurnal Teknologi Elektro Vol 18 No 1 (2019): (Januari - April) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2019.v18i01.P22

Abstract

Sentiment analysis is a field that is currently in great demand by various groups. Sentiment analysis can be done using documents and opinions from social media. One social media that is usually used as a means of opinion is Facebook social media. Before a text is classified, it is necessary to do POS Tagging which is the word labeling stage where the purpose is to determine the words which include opinions and non opinions. For labeling words can use the Hidden Markov Model or Rule Based. The method commonly used in sentiment analysis is the Naïve Bayes Classifier method. This method simply classifies probabilities. Naïve Bayes Classifier can be used to classify opinions into positive and negative opinions. In addition, this method uses training data in the classification process. The classification produced from the Naïve Bayes Classifier method is quite good. To test the accuracy of the system in classifying opinions, the classification results are tested. From the test results obtained an average accuracy of 87.1%. The more training data that is similar to testing data, the better the classification results.
Analisa Kinerja Penerapan Standard Protokol Keamanan IEEE 802.11 Pada Layanan Wireless Fidelity M Zatiar Erwan Kalam; Ni Made Ary Esta Dewi Wirastuti; I Made Oka Widyantara
Jurnal Teknologi Elektro Vol 20 No 1 (2021): (Januari - Juni ) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2021.v20i01.P10

Abstract

Communication network depends on the WLAN , and there is so much demand on the Quality Of Service (QoS) WLAN like Throughput , delay , and filter to secure the Communication Data , therefore a network security mechanism is using the Wired Equivalent Privacy (WEP), WiFi Protected Access (WPA), and WPA2 [14]. Mall Bali Galleria has several alternative for free WiFi, There is so many Wi-Fi has been installed causing the problem interference, and that affect the performance of the WiFi, MBG has the Indoor and Outdoor Area, The alternative to handle the interference is to using the automation channel by implementing Channel Fly , Background Scanning and Static Channel. From the security mechanism, Channel And Frequencies made by doing scenario on every single access point to get the best scenario , from the scenario that has been submitted The best score of the packet loss on indoor area Scenario that uses 4 AP with the 5Ghz Frequency , static channel , WEP-64 is 0,016ms of the packet loss , the Outdoor areas scenario that uses 5 AP with 5Ghz frequency ,Channel Fly , WEP-64 get 0,094ms of the packet loss , The best jitter score for the indoor area that uses 2 AP , 5Ghz Background Scanning , WPA 2 is 1.336ms of the jitter, outdoor area 8 AP , 5Ghz Frequency , static channel , WPA2-Mixed get 1,116 ms of Jitter , The Throughput best scores is indoor area with 1 AP , 5Ghz Frequency, Static Channel , WPA2-Mixed get 78,7Mbps of the Throughput, for the Outdoor Areas using 8 AP , 5Ghz Frequency , Background Scanning, Disable Security is 80Mbps Of The Throughput , if it compared with the existing scenario the performance is improved to 10-30%. WEP has good packet loss score however it has smallest Throughput. Static channels are recommended on the location that have high interference.
Perankingan Dosen Berbasis Aktifitas Forum Moodle Menggunakan Metode Fuzzy Tsukamoto I Gede Yogi Prawira Putra; Gede Sukadarmika; Nyoman Putra Sastra
Jurnal Teknologi Elektro Vol 22 No 1 (2023): (Januari - Juni) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2023.v22i01.P08

Abstract

The online learning process currently utilizes a Learning Management System, one of which is Moodle. Moodle provides a forum menu where the forum is a digital forum for asking questions and answering and sharing between lecturers and students. Lecturer and student activity can be seen from the forum menu. For this reason, research was conducted on the ranking of lecturer activities in the moodle forum. The ranking determination uses the Fuzzy Tsukamoto decision making system. Fuzzy Tsukamoto has step efficiency in determining rules and processing data that has a taboo range and produces crips output. The processing steps carried out are determining the variables, giving weights, creating a fuzzy set of each variable, then the fuzzification process and creating a rule base and finally, defuzzification, namely the calculation of negligence and output. Based on the rule and the predicate alpha value, the appropriate value is obtained to rank the quality of lecturers based on their activities in the moodle forum. Keywords — database, forum, fuzzy, moodle, tsukamoto
ALOKASI PEMBEBANAN OPTIMAL PADA SISTEM PEMBANGKITAN DI BALI i Ketut Wijaya
Jurnal Teknologi Elektro Vol 3 No 2 (2004): (July - December) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

Pada sistem pengoperasian tenaga listrik, komponen biaya operasi terbesar adalah biaya bahan bakar. Oleh karenanya efisien pemakaian bahan bakar sangat besar pengaruhnya terhadap penghematan biaya operasi. Pengalokasian pembebanan pembangkit yang optimal merupakan suatu usaha untuk meminimumkan biaya operasi pada sistem tenaga listrik, tanpa melanggar persyaratan operasi.Dalam penelitian ini, untuk menghitung alokasi pembebanan unit-unit pembangkit yang beroperasi digunakan algoritma optimasi yaitu; Gradient Projection Method (GPM).Dengan menggunakan metode ini untuk Sistem Pembangkitan Bali pada tanggal 31 Desember 2003, selama lima jam diperoleh penurunan biaya bahanbakar yang cukup signifikan.
ANALISIS PENGARUH UNIT PEMBANGKIT TERSEBAR TERHADAP STABILITAS DINAMIS SISTEM TENAGA Agung Budi Muljono; I Made Ari Nrartha
Jurnal Teknologi Elektro Vol 8 No 1 (2009): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

Deregulasi pada sistem tenaga saat ini membawa kecenderungan untuk membangun unit-unit pembangkit yang letaknya tersebar dekat dengan pusat-pusat beban. Unit ini umumnya berkapasitas kecil berbeda dengan kondisi sistem lama yaitu pembangkit berkapasitas besar terletak terpusat (lumped). Beroperasinya unit pembangkit tersebar membawa kecenderungan transfer daya inter dan antar area menjadi berkembang. Hal ini mengakibatkan perubahan titik operasi pembangkitan dan pola aliran daya yang akan menyebabkan masalah pada stabilitas dinamis sistem. Penelitian ini bertujuan mengetahui pengaruh unit pembangkit tersebar terhadap stabilitas dinamis sistem tenaga. Pada penelitian ini dibuat dan diuji program untuk stabilitas dinamis dengan program aplikasi MatPower 3.0 dan MATLAB 7.0.4. Pembangkit tersebar (DG) yang diteliti adalah PLTM yang masuk ke salah satu bus pada sistem 14 bus dan 4 pembangkit. Hasil penelitian menunjukkan sistem yang diteliti berada  pada kondisi stabil untuk beban puncak dan gangguan penambahan beban 10%. Pengaruh DG membawa dampak perbaikan pada pembangkit yang terhubung langsung dengan DG rata-rata sebesar 0.2280 pu (0.26 %), tetapi memberikan respon keterlambatan  nilai settling time terhadap gangguan rata-rata sebesar 13,84 detik.
Rancang Bangun Sistem Pembatas Arus Daya Kecil Tegangan 220VAC Berbasis Mikrokontroller Setyawan Purnomo Sakti
Jurnal Teknologi Elektro Vol 15 No 1 (2016): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2016.v15i01p18

Abstract

Indonesia terletak di sepanjang garis khatulistiwa. Oleh karena itu, wilayah Indonesia mendapatkan radiasi matahari yang relatif konstan sepanjang tahun. Pembangkit listrik tenaga surya (PLTS) dari sel foto listrik adalah salah satu yang menjadi perhatian pemerintah Indonesia untuk meningkatkan tingkat kelistrikan, terutama di daerah terpencil. PLTS terpusat saat ini telah dipasang diberbagai daerah terpencil dengan perumahan terkonsentrasi. Umumnya, kapasitas daya listrik yang dihasilkan sangat terbatas. Kapasitas yang dihasilkan adalah sampai beberapa kilowatt, sehingga distribusi tenaga listrik untuk perumahan terbatas. Penggunaan daya beban yang berlebihan menjadi salah satu masalah dalam keberlanjutan pasokan listrik dari PLTS. Sistem ini membutuhkan limiter arus dengan batas yang sangat rendah. Pembatas arus yang tersedia secara komersial membatasi aliran dengan kapasitas terkecil sebesar 0,5A. Pembatas arus ini tidak dapat digunakan dalam distribusi tenaga listrik dari PLTS, karena saat ini PLTS membatasi lebih arus kurang dari 0,5A. Untuk keperluan penerangan dan peralatan listrik yang kecil, daya listrik yang dapat disampaikan dengan aman dari generator tenaga surya kurang dari 100 Watt atau kurang dari 0,5A. Oleh karena itu pembatas arus yang sangat rendah untuk membatasi penggunaan listrik untuk rumah tangga telah dikembangkan menggunakan mikrokontroler dan sensor arus jenis transformator. Sistem yang dikembangkan dapat membatasi daya listrik hingga 100 Watt dengan akurasi hingga 0,16 Watt. Batas daya listrik dapat diatur dalam kode program mikrokontroler.DOI: 10.24843/MITE.1501.18
STUDI PENGARUH REKONFIGURASI LOOP SCHEME TERHADAP KEANDALAN PENYULANG BLAHKIUH DAN PENYULANG PANGLAN bagus widyananda yoga; I Gede Dyana Arjana; A.A Gede Maharta Pemayun
Jurnal Teknologi Elektro Vol 17 No 1 (2018): (Januari - April) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2018.v17i01.P05

Abstract

Abstract—To improve reliability, the do loop system reconfiguration scheme to Blahkiuh feeders and feeders Panglan, by analyzing the calculation SAIFI and SAIDI, can the economy in terms of pressing / kWh minimize the number of unsold losses. Analysis of calculation results Blahkiuh feeders and feeder reconfiguration Panglan before result Blahkiuh feeder SAIFI 16.534 times/customers/year and the results SAIDI 35.894 hours/customer/year so the numbers of unsold kWh losses from the calculation not save 227,640.841 kWh energy equivalent to Rp 318,718,182.6, while for the results obtained Panglan feeder SAIFI 23.59 times/customer/year, the results of SAIDI 87.39 hours/ customer/year and the calculation results energy not save 238,037.099 kWh equivalent to Rp 364,672,835.7. After reconfiguration can minimize the number of SAIFI / SAIDI and losses, the results obtained Blahkiuh feeder SAIFI 2,089 times/ customers/year and the results SAIDI of 4.27 hours/customer/year, results energy not save 13369.314 kWh equivalent to Rp 20,481,733.86. For Panglan feeder SAIFI results obtained 1,218 times/customers/year and the results SAIDI 1,242 hours/ customer/year, results energy not save 3880.571 kWh equivalent to Rp 5,945,033.22. Intisari— Untuk meningkatkan keandalan maka dilakukan rekonfigurasi sistem loop scheme pada penyulang Blahkiuh dan penyulang Panglan, dengan menganalisa perhitungan SAIFI dan SAIDI, ditinjau dari segi ekonomi mampukah menekan/ memperkecil angka kerugian kWh yang tidak terjual. Hasil Analisa perhitungan penyulang Blahkiuh dan penyulang Panglan sebelum rekonfigurasi diperoleh hasil SAIFI penyulang Blahkiuh 16,534 kali/pelanggan/tahun dan hasil SAIDI 35,894 jam/pelanggan/tahun sehingga angka kerugian kWh tidak terjual dari hasil perhitungan energy not save 227.640,841 kWh setara dengan Rp 318.718.182,6, sedangkan untuk penyulang Panglan diperoleh hasil SAIFI 23,59 kali/pelanggan/tahun, hasil SAIDI 87,39 jam/pelanggan/tahun dan hasil perhitungan energy not save 238.037,099 kWh setara dengan Rp 364.672.835,7. Setelah rekonfigurasi dapat memperkecil angka SAIFI/SAIDI dan kerugian yang dialami, pada penyulang Blahkiuh didapat hasil SAIFI 2,089 kali/pelanggan/tahun dan hasil SAIDI 4,27 jam/pelanggan/tahun, hasil energy not save 13.369,314 kWh setara dengan Rp 20.481.733,86. Untuk penyulang Panglan didapat hasil SAIFI 1,218 kali/pelanggan/tahun dan hasil SAIDI 1,242 jam/pelanggan/tahun, hasil energy not save 3.880,571 kWh setara dengan Rp 5.945.033,22. Kata Kunci : Sistem radial, Loop scheme, SAIFI/SAIDI, Energy not save [Turnitin Chek 12% 13042017]
Economic Dispatch Pada Pembangkit Listrik Tenaga Diesel Gas (PLTDG) Menggunakan Fuzzy Logic Controller (FLC) I Made Teguh Winasatria; I Made Mataram; Ida Bagus Gde Manuaba
Jurnal Teknologi Elektro Vol 18 No 1 (2019): (Januari - April) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2019.v18i01.P16

Abstract

In fulfilling current electrical energy needs, a power plant unit is operated using various fuels. The biggest cost of the total operating costs of the plant is the cost of using the generator unit fuel which is around 60%, therefore a solution is needed to be able to minimize the costs of using generator fuel in operating the generating unit. Economic Dispatch is a way to overcome the economic operating problem of a power plant by dividing the load on each operating unit so that the minimum generation cost is obtained. The solution to the Economic Dispatch problem can be done using the Fuzzy Logic Controller (FLC) method because the FLC method can make very complex decisions and in its application does not require mathematical models that are too difficult to solve, so the FLC method is expected to minimize the cost of generating electricity. The results of calculating the Economic Dispatch using the FLC method result in a lower total production cost compared to the total total production costs of the System and the Lamda Iteration method for 24 hours on September 30, 2017.

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