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Jurnal Otomasi Kontrol dan Instrumentasi
Published by Institut Teknologi Bandung
ISSN : 20852517     EISSN : 24606340     DOI : https://doi.org/10.5614/joki
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering
Jurnal Otomasi Kontrol dan Instrumentasi adalah jurnal ilmiah yang diterbitkan oleh Pusat Teknologi Instrumentasi dan Otomasi (PTIO), Institut Teknologi Bandung setahun dua kali (April - Oktober) untuk menyebarluaskan hasil-hasil penelitian dengan fokus dalam bidang otomasi, kontrol, dan instrumentasi dalam lingkup: Pengembangan Konsep dan Sistem Instrumentasi, Kontrol dan Otomasi: -Teori Kontrol -Pemodelan dan Identifikasi Sistem -Industri 4.0 -Sistem Terdistribusi -Sistem Virtual -Sistem Robotika dan Otonom -Sistem berbasis Pengolahan Citra -Sistem berbasis Kecerdasan Buatan Aplikasi Instrumentasi dan Kontrol : -Bidang Industri dan Keamanan -Bidang Transportasi dan Komunikasi -Bidang Kesehatan dan Kenyamanan Hunian -Bidang Pertanian dan Pengolahan Pangan -Bidang Manajemen Energi -Bidang Energi Terbarukan -Bidang Industri Kreatif.
Arjuna Subject : Teknik (semua kategori) - Teknik Kontrol dan Sistem
Articles 226 Documents
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Pengujian Pengenalan Wajah Menggunakan Raspberry Pi Irvan Budiawan; Andriana Andriana
Jurnal Otomasi Kontrol dan Instrumentasi Vol 6 No 2 (2014): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2014.6.2.6

Abstract

Sistem keamanan yang baik memiliki sistem verifikasi data lebih dari satu. Sebagai contoh, sistem pintu masuk ruangan rahasia sebaiknya tidak hanya menggunakan password berupa paduan angka dan huruf namun juga harus ditambahkan sistem biometrik, misalkan sistem pengenalan wajah.  Dari latar belakang tersebut penulis berinisiatif untuk membuat sistem pengenalan wajah dengan menggunakan sistem tertanam (embedded system) raspberry pi. Perangkat keras utama dari sistem adalah raspberry pi dan modul kamera raspberry pi. Metode pengenalan wajah yang digunakan adalah eigenface dengan bantuan library opencv. Raspberry pi akan diinstall dengan sistem operasi raspbian yang merupakan sistem operasi debian yang diperuntukan untuk raspberry pi. Program pengenalan wajah yang akan dibangun menggunakan bahasa pemrograman C++. Data Training diambil dari 5 orang, masing-masing orang diambil sembilan bahan Training berupa foto dengan variasi ekpresi dengan pose yang sama. Dari pengujian performansi prototipe yang dibangun, didapatkan equal error rate (EER) sebesar 13,333%.Kata Kunci Kata kunci : pengenalan wajah, opencv, rasberry pi, eigenface, keamanan
Design of Mobile and Robotic Observing System with Special Telescope Baffle for Searching Young Lunar Crescent Dhani Herdiwijaya; Mitra Djamal; Hendra Gunawan
Jurnal Otomasi Kontrol dan Instrumentasi Vol 4 No 1 (2012): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2012.4.1.1

Abstract

The visibility of very young lunar crescent near the Sun at western horizon after sunset are indispensable important factor in determining important religious Islamic calendar. One can see it at horizon after the sunset as this is the less stringent condition However, in an advanced scientific and technological based, the observation of lunar crescent near the Sun can be undertaken in broad daylight before sunset. The research project will study and develop some additional observing tools, image acquisition and image processing procedures for mobile and robotic observing system that one enable to search the very young crescent in broad daylight. The main problem is how to minimize the atmospheric and instrumental stray light that can obscure the information from the very young crescent image from the daylight background. We have developed and tested a simple extended telescope baffle that can reduce the incoming stray light from the sky and environment. Hence, it will increase the contrast of the lunar crescent. Some requirements and optimization have been applied for the robotic observing system (telescope and its mounting), image acquisition and image processing procedures. The free software and digital camera are used. The observational main constraint was the cloudy sky on the first day of lunar calendar. The progresses will be reported
Experiment on Application of Laser Obscuration for Counting and Sizing of Spherical Fuel Particle Suwardi Suwardi
Jurnal Otomasi Kontrol dan Instrumentasi Vol 4 No 1 (2012): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2012.4.1.2

Abstract

The paper reports an experiment on application of laser obscuration for counting and sizing of spherical particle fuel. It is a part of design study on counting and measuring device for particle fuel. The measurement is based on monitoring of sheet shaped laser beam obscuration caused by particles passage. Laser generate a parallel and thin beam laser perpendicularly crossing the particles stream at a point which is specifically windowed.  A photo detector is placed -side by side- the laser relative to the particles passage for monitoring the laser beam. The detector is connected to an oscilloscope for signal measurement and display. The typical diameter bare particle is 500 um; while of coated particles is 1300 um, so a beam of 30 um thickness has been chosen. The particles were dropped one by one into a vertical tube which crosses the laser beam at windowed portion. The progress of obscuration reflects the form of particle projection on a plane permits the construction of size and sphericity of particle. The design has been realized and a measurement function has been demonstrated. The display of detected laser beam showed the passage of particle as a parabolic curve as prediction. It was suggested to record the laser obscuration on a micro computer via DAQ and to develop a computer program for counting and sizing the spherical particle. Keywords:spherical particle, nuclear fuel, size, shape, laser beam, obscuration
Perangkat Lunak Sistem Akuisisi Data Menggunakan Delphi Nanda Nagara; Putranto Ilham Yazid
Jurnal Otomasi Kontrol dan Instrumentasi Vol 4 No 1 (2012): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2012.4.1.3

Abstract

Telah dibuat perangkat lunak untuk mendukung sistem akuisisi data (Data Acquisition System, DAS) pengukur kanal temperatur dengan menggunakan antarmuka kartu multifungsi 12 Bit. Perangkat lunak tersebut dipasangkan pada komputer personal dengan operasi yang dijalankan melalui program Delphi. Program diatur melalui pemilihan menu yang bervariasi seperti "DAC Type and Parameters", "Amp-Mux Type and Parameters" dan "Graph Mode". Dari hasil uji coba dapat ditunjukan bahwa aplikasi yang dikembangkan dapat digunakan sebagai Sistem Akuisisi Data pengukur kanal temperatur di fasilitas Termohidrolik Reaktor.Kata Kunci : sistem akuisisi data; kartu antarmuka; Delphi
Penentuan Karakteristik Dari Sistem Pengontrolan Kelajuan Motor DC Dengan Sensor Optocoupler Berbasis Mikrokontroler AT89S52 Asrizal Asrizal; Yulkifli Yulkifli; Melvi Sofia
Jurnal Otomasi Kontrol dan Instrumentasi Vol 4 No 1 (2012): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2012.4.1.4

Abstract

Artikel ini bertujuan untuk mendeskripsikan blok diagram sistem dan menganalisis karakteristik statik sistem pengontrolan kelajuan motor DC dengan sensor optocoupler berbasis mikrokontroler. Pada sistem pengontrolan, putaran motor DC diindra oleh optocoupler, keluaran sensor diproses melalui mikrokontroler AT89S52 dan hasilnya ditampilkan pada LCD. Sistem pengontrol dirancang untuk mengontrol kelajuan motor DC antara 20 sampai 30 rpm dengan selang waktu 1 sampai 12 menit. Penelitian yang dilakukan termasuk kedalam rekayasa. Pengukuran langsung dilakukan terhadap jumlah dan waktu putar motor DC. Pengukuran tidak langsung digunakan untuk menentukan kelajuan dari motor DC. Produk yang dihasilkan dan data yang didapatkan dari hasil pengukuran dianalisis melalui tiga cara yaitu metoda mendeskripsikan, teori kesalahan, dan metoda grafik. Berdasarkan hasil analisis terhadap produk dan data dapat dikemukakan tiga hasil penelitian ini. Pertama, rangkaian sistem pengontrolan dari tujuh elemen dasar yaitu: sensor optocoupler, mikrokontroler AT89S52, tombol setting dan selektor, LCD, SPC DC motor, motor DC dan catu daya teregulasi. Kedua, ketepatan rata-rata dari penunjuk jumlah putar dan waktu putar motor DC dari sistem pengontrolan masing-masing 99,122 dan 99,786. Ketelitian rata-rata dari penunjuk jumlah putar dan waktu putar dari sistem pengontrolan masing-masing 0,988 dan 0,994. Berarti ketepatan dan ketelitian dari sistem pengontrolan termasuk tinggi. Ketiga, pada tiga titik set kelajuan motor DC yang dirancang, dihasilkan jumlah putar motor DC naik secara linear dengan kenaikan waktu putar masing-masing kelajuan motor DC pada titik set adalah 20,331 RPM, 25,214 RPM, dan 30, 169 RPM.Keyword:Karakteristik, sistem, kontrol, optocoupler, mikrokontroler
Simulasi Kontrol Temperatur Berbasis Fuzzy Logic Untuk Tabung Sampel Minyak Bumi Pada Metode Direct Subsurface Sampling Irkhos Irkhos; Suprijadi Suprijadi
Jurnal Otomasi Kontrol dan Instrumentasi Vol 4 No 1 (2012): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2012.4.1.5

Abstract

Telah dilakukan simulasi kontrol temperatur untuk model tabung pengambilan sampel minyak bumi pada metode Direct  Subsurface Sampling menggunakan Fuzzy Logic Control (FLC). Temperatur tabung sampel dikontrol agar selalu stabil pada temperatur 50oC. Simulasi didesain menggunakan toolbox fuzzy logic dan matlab simulink. Hasil simulasi menggunakan FLC menunjukkan kestabilan kontrol yang lebih baik bila dibandingkan dengan hasil simulasi kontrol menggunakan metode control PID dan kontrol on/off. Simulasi kontrol menggunakan FLC diperoleh nilai error sebesar 1,153 oC dan settling time sebesar 0,5 s. Simulasi kontrol metode PID diperoleh nilai error sebesar 3,127 oC dengan settling time 4 s, sedangkan simulasi kontrol on-off diperoleh error sebesar 4,248 oC dengan settling time 4 s.Kata Kunci:kontrol temperatur, tabung sampel minyak bumi, Simulasi Fuzzy logic Kontrol
Sistem Telemetri Pemantau Gempa Menggunakan Jaringan GSM Ismail Rizka Pambudi; Yudi Nugraha; Mitra Djamal
Jurnal Otomasi Kontrol dan Instrumentasi Vol 4 No 1 (2012): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2012.4.1.6

Abstract

Seiringdenganperkembanganzaman,informasiyangcepatdanakuratsangatdiperlukandalammenunjangkinerjadiberbagaibidang.Salahsatunyaadalahinformasimengenaigempa,informasiiniperludisampaikandengancepatdanakuratsehinggadapatmengurangikerugianhartamaupunkorbanjiwa.Namunlokasigeografisdaristasiunpengamatyangbiasanyaadadipedalamanmenjadikurangmenguntungkan,kondisiinimengurangikelancaranpenyebaraninformasimengenaigempa.Salahsatusolusiuntukmenanggulangimasalahketerlambataninformasiiniadalahdenganmemanfaatkantelemetrinirkabel.Telemetrimerupakanserangkaianprosesmulaidaripengukurandilapangan,pengirimandatamelaluimediumtransmisitertentu,kemudianditerimaolehstasiunpengolahdata.Telemetriseringdigunakanuntukmemantaukondisididaerah-daerahyangsulitdijangkauataumembahayakanmanusia. Sistem telemetri ini memiliki beberapa keunggulan, yaitu biaya pembangunan yang relatif murah, sistem monitoring melalui web, dan menggunakan jaringan GSM sehingga jaungkauannya sangat luas.Kata Kunci:Gempa, GSM, GPRS, Nirkabel
Development of Circularly Polarized Synthetic Aperture Radar Sensor mounted on Unmanned Aerial Vehicle M Baharuddin; P R Akbar; J T.S Sumantoyo; H Kuze
Jurnal Otomasi Kontrol dan Instrumentasi Vol 1 No 2 (2009): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2009.1.2.1

Abstract

This paper describes the development of a circularly polarized microstrip antenna, as a part of the Circularly Polarized Synthetic Aperture Radar (CP-SAR) sensor which is currently under developed at the Microwave Remote Sensing Laboratory (MRSL) in Chiba University. CP-SAR is a new type of sensor developed for the purpose of remote sensing. With this sensor, lower-noise data/image will be obtained due to the absence of depolarization problems from propagation encounter in linearly polarized synthetic aperture radar. As well the data/images obtained will be investigated as the Axial Ratio Image (ARI), which is a new data that is expected to reveal unique various backscattering characteristics. The sensor will be mounted on an Unmanned Aerial Vehicle (UAV) which will be aimed for fundamental research and applications. The microstrip antenna works in the frequency of 1.27 GHz (L-Band). The microstrip antenna utilized the proximity-coupled method of feeding. Initially, the optimization process of the single patch antenna design involving modifying the microstrip line feed to yield a high gain (above 5 dBi) and low return loss (below -10 dB). A minimum of 10 MHz bandwidth is targeted at below 3 dB of Axial Ratio for the circularly polarized antenna. A planar array from the single patch is formed next. Consideration for the array design is the beam radiation pattern in the azimuth and elevation plane which is specified based on the electrical and mechanical constraints of the UAV CP-SAR system. This research will contribute in the field of radar for remote sensing technology. The potential application is for landcover, disaster monitoring, snow cover, and oceanography mapping. Especially for Indonesia which is the largest archipelago country in the world, the need for surface mapping and monitoring is demanding.  Keywords: synthetic aperture radar, circular polarization, microstrip antenna
Electric Traction Motor Drive Modeling For Electric Karting Application Using Matlab®/Simulink® Software D Istardi
Jurnal Otomasi Kontrol dan Instrumentasi Vol 1 No 2 (2009): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2009.1.2.2

Abstract

An electric traction motor drive for an electric karting application was modeled for efficiency studies and simulated using the MATLAB®/Simulink® software. The model includes models of a battery, power electronic converter, electric motor, and vehicles dynamic of go-karts to a typical 48 seconds track driving schedule. The losses of each component of the electric traction motor drive were modeled and simulated over the entire speed range. In the battery was also calculated the state of charge (SOC) of the battery over the driving cycle. The regenerative braking energy captured was also considered in the simulation. Finally, the overall electric traction motor drive system efficiency and energy consumed were estimated based on the individual model based efficiency and energy consumed analysis. Index Terms—Battery, electric go-kart, efficiency maps, loss modeling, and regenerative braking.
Feasibility Study of Solar Power Massive Usage in Indonesia: Yield versus Cost-Effective M A Setiawan
Jurnal Otomasi Kontrol dan Instrumentasi Vol 1 No 2 (2009): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2009.1.2.3

Abstract

The aim of this study is to analyze the cost production of solar power utilization comparing with its annual yield especially in Indonesia. Solar cell module employed is poly-crystalline silicone with Peak Power 20 Wp, Power Current (Imp) 1.17 A and Power Voltage (Vmp) 17.1 V. To obtain the maximum power of the sun, the module is static fixed in 10-20 N adjusting to the equator line. The measurement is conducted in Timah Manufacture Polytechnic which is situated in 1020' S and 1060 E. The output is observed by multimeter data logger for every hour average. The cable employed between solar module and the multimeter and the battery is NYA Eterna 2.5 mm2 450/750 V with SNI number 04-2698 SPLN 42, the long is 40 meter and have resistance about 0.6-0.7 W. The measurement output indicates that the maximum solar power is at 11.00 to 14.00 WIB. In these times, the current output is more than Imp of the Module. By calculating the average of energy received in a day, the energy received is 65%-75% of Imp. Therefore by mathematically calculation, the annual yield of current is about 4,982.68 Ampere and in 25 years will be around 124,566.90 Ampere. According to PLN statistic report in 2008, the average cost production in 2007 is Rp.706.62/KWH and the cost production of the solar energy is about Rp.440.819/KWH. This calculation is included the investment, overhead and 10% of inflation /year. By comparing to the regional minimum revenue (UMR) per month in 2008, the cost of investment for the solar power usage is about 6-7 times. Although break-even-point will be occurs in 10 years, the affordability of Indonesian for massive usage of solar power is still too hard and need funded by government and others funding groups.  Keywords: Solar Cell, Cost-Effective, Poly-Crystalline-Silicone, Annual Yield

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