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All Journal Journal of ICT Research and Applications Jurnal Elektronika dan Telekomunikasi TESLA: Jurnal Teknik Elektro INSIST (International Series on Interdisciplinary Research) JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Pengabdian dan Kewirausahaan Prosiding Seminar Nasional Pemberdayaan Masyarakat (SENDAMAS) Journal of Scientific Insights Exhibition and Seminar on Science and Creative Technology – Al Azhar Proceeding
Dwi Astharini
Electrical Engineering Department, Universitas Al Azhar Indonesia, Jalan Sisingamangaraja, Kebayoran Baru, Jakarta, Indonesia 12110
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Optimization of Hydraulic Servo Parameter for Semi-Solid Machine using Aerotech A3200 Fiqri Ibrahim Amien; Danny M Gandana; Nasril Nasril; Dwi Astharini; Ahmad Husin Lubis
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 4, No 2 (2017)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v4i2.258

Abstract

Abstract – Hydraulics machines are important parts in semi solid metal forging machine, to form the workpiece by pressing. Semi-solid machine positioning movements are required to have a high accuration, to get the high accuracy of the movement system a servo hydraulic control is added ,which consist of servo valve and digital controller (Aerotech A3200). The digital control parameters (kpos, kp, ki) are used to enhanced the hydraulic movement. To get the effect of the control parameters of the plant (hydraulic servo), a mathematical approach is used for simulation in matlab. In this research, study was done by optimize kp and ki parameters of the control system. Prior to the optimization, simulation was conducted using matlab. Where the simulated testing is using the input unit (step) and frequency (bode) to predict the circumstances that occurred to the plan which is then compared with experimental results. a step response was simulated in matlab to analyze the error of the hydraulic system. Having obtained the minimum error from adjusting kp and ki in matlab, a trend graphic error was used as a guideline to adjust parameter in actual system. The last step is to implement and adjust kp/ki in actual system and measure the real position error.Based on this research, it concluded that the error before adjustment are 0.6118-1.2642 mm for autotune  parameter kp 3500000, ki 50000. The result of average error in this experiments after adjustment are 0.017-0.166 mm for parameter kp 250000, ki 10000. Keywords - Hydraulic Servo, Aerotech A3200, Step response, Bode plot, Semi-Solid Machine.
Prototipe Pengendalian pH dan Elektro Konduktivitas Pada Cairan Nutrisi Tanaman Hidroponik Anwar Mujadin; Dwi Astharini; Octarina Nur Samijayani
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 4, No 1 (2017)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v4i1.241

Abstract

Abstrak – Prduk komuditas budidaya cara hidroponik saat ini  hasilnya belum optimal, ini disebabkan karena pemberian nutrisi pada tanaman hidroponik masih diperlakukan sama untuk semua jenis tanaman. Padahal setiap tanaman memiliki karakteristik sendiri terhadap nutrisi yang diserapnya. Parameter keberhasilan budidaya tanaman hidroponik tergantung pada pH dan densitas (kekentalan) dari cairan nutrisi yang diberikan. Dalam tulisan ini akan dijelaskan mengenai rangkaian elektronika pengukuran pH dan densitas nutrisi tanaman hidroponik. Hasil pengujian prototipe mampu diterapkan pada pembacaan  pH 5-9 dengan resolusi 0.63V/pH dan electro conductivitas sebesar Y= 2900e-X. Kata Kunci – Hidroponik, pH dan Masa jenis dari nutrisi tanaman hidroponik Abstract – Currently, commodity product of hydroponics plant has not optimal yet caused by giving nutrients in hydroponic plants are still treated equally for all types of plants. Whereas  each plant had own characteristics of the nutrients absorbed. pH meter and viscosity(electro conductivity)  are the parameters decided for growing plant. In this paper will be explained clearly of electronics circuit  pH measurement and electro conductivity. At eksperiment prototipe   can  be  reading  at pH 5-9  with  resolution  0.63V/pH  and electro conductivitas atY= 2900e-X. Keywords – Hydroponics, pH and Density of liquid nutrient plant
Pengembangan Sistem Pendeteksi Lokasi Titik Api dalam Ruangan Terbatas Dwi Astharini; Suci Rahmatia; Tio Apridinata; Raja P Batubara
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 2, No 2 (2013)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v2i2.129

Abstract

Abstrak - Tulisan ini melaporkan pengembangan perangkat untuk pendeteksian adanya api dan menentukan arah lokasi api. Lokasi titik api dinyatakan jarak relatif terhadap sensor. Penelitian dibatasi untuk menentukan lokasi titik api pada ruangan tertutup, di mana suhu ruangan lebih terkendali dan diharapkan tidak terpengaruh pengaruh lingkungan seperti cuaca. Perangkat yang dikembangkan menggunakan sistem minimum berbasis mikrokontroler ATMega16, memanfaatkan sensor panas array TPA81 dan display LCD. Sistem telah mampu mendeteksi dan menentukan lokasi lilin pada radius 0,5 m 180 derajat. Abstract - This paper reports the development of a fire detection detection device for closed room. The device detects and locates the present of fire in a room. Location of fire or heatsource is defined as relative distance to the sensor. The development was limited for usage within closed room with normally controlled temperature.  The device was developed using a minimum system on microcontroller ATMega16, array heat sensor TPA81 and LCD display. The prototype introduced was firmly successful in detecting and locating a single candle within 0.5 m distance and 180 degree angle scope, assuming the device to be planted on a wall in a room.
PC Based Real Time Control of DC Motor Mohamad Fauzi Radsanjani; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 4, No 2 (2017)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v4i2.259

Abstract

Abstract – This final project report present a Pc based real time control of DC motor. Real time control systems can be defined as a technology which is related to mechanical application, electronic, and computer-based systems. In general, the equipment that is often used for controlling speed system is Arduino Mega 2560, DC motor, motor driver IC L298N, speed sensor IC LM393, and voltage sensor. Software in the system I used Matlab Simulink to monitor and control the speed of dc motor will show real data, they are displayed in signal RPM and signal Voltage, Matlab Simulink is used program to let the operator operates the system well. This monitor and control system can improve the effectiveness and efficiency in various industrial fields. Keyword – PC, Real Time, Control, DC Motor 
Implementasi Sistem Sensor Sederhana untuk Peringatan Banjir melalui SMS Octarina Nur Samijayani; Fadjar Iftikar; M. Hariomurti; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 2, No 1 (2013)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v2i1.94

Abstract

Menilik pada beberapa masalah yang sering terjadi terutama di kota besar Jakarta, diantaranya banjir, kawasan perumahan di daerah dataran rendah dan berada disekitar sungai besar merupakan daerah rawan banjir. Pengabdian masyarakat berbasis penelitian ini bertujuan untuk menerapkan keilmuan elektronika mengenai instrumentasi dan mikroprosesor yakni sistem sensor air yang didesain untuk mengetahui ketinggian air di sekitar sungai dan saluran air dekat perumahan. Sistem sensor ini bertujuan memberi isyarat akan adanya banjir melalui SMS, sehingga pompa air dapat segera diaktifkan untuk menyedot air agar dialirkan ke sungai. Hasil uji coba laboratorium untuk sistem sensor air dengan prinsip dasar bahwa air sebagai penghantar menggunakan dua pelat konduktor telah berhasil diimplementasikan. Uji coba sistem dengan microcontroller dan GSM Module juga telah berhasil mengirimkan SMS (sebagai alert banjir). Sistem GSM akan mengirimkan SMS jika rangkaian LM339 mengindikasikan bahwa air telah mencapai ketinggian yang berpotensi terjadinya banjir.
A Straightforward Design and Implementation of Real Time Pressure Monitoring System in Water Pipe Dwi Astharini; Arizka Arizka
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 1, No 4 (2012)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v1i4.89

Abstract

This paper reports the development of a real time system for pressure monitoring inside water pipe. In water supply industry it is valuable to know the water pressure inside the pipe. Thus the system created consisting hardware parts in compact form along with software in laptop for high mobility. In the hardware part, pressure gauge is chosen as sensor, and a conversion of the data into frequency is decided for better communication with the computer. The process in the software includes data captures, conversion, and display using visual basic MSviewer.
Perancangan Robot Pengikut Garis Sederhana Sebagai Perangkat Pelatihan Tingkat Pemula Dwi Astharini; Rona Regen; Nasrullah Nasrullah; Ibrahim Ibrahim; Surya Agam
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 1, No 2 (2011)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v1i2.25

Abstract

Tulisan ini melaporkan perancangan robot sederhana pengikut garis. Dalam hal ini hasil rancangan akan digunakan sebagai  perangkat pelatihan siswa sekolah menengah, sehingga rancangan dibatasi pada fungsi minimumnya agar pembuatan dapat dilakukan secara in house. Perangkat keras dibangun menggunakan photodioda dan LED IR pada sistem sensor, ATMega16 sebagai pengendali utama dan PCB buatan sendiri.Design of a simple line follower robot is reported in this paper. In order to meet the needs on training for school student, the design is restricted to have just the minimum function so that the implementation can be done in house. The hardware built utilizes photodiodes and IR LED as sensor system, ATMega16 as main controller and manually made PCB.
Model Petri Net untuk Otomatisasi Destilasi Bioethanol Dwi Astharini; Ahmad Zulkarnaen; Yaya Suryana
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 3, No 1 (2015)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v3i1.181

Abstract

Abstrak – Petri net adalah satu di antara yang digunakan untuk pemodelan sistem otomatis. Tulisan ini melaporkan penggunaan model petri net pada purwarupa alat destilasi etanol otomatis, menggunakan PLC sebagai pengendali utama. Model proses mencakup perangkat keras dan lunak. Sistem pengaturan yang dimodelkan bertujuan menjaga agar suhu dalam wadah pemanas berada dalam kisaran titik didih etanol yaitu 80 ºC, serta pengamanan perangkat terutama terkait elemen pemanas. Pemodelan sistem pengaturan dikembangkan menggunakan petri net bebas, untuk implementasi pada PLC. Implementasi menghasilkan perangkat yang secara konsisten melakukan destilasi secara otomatis, dan menghasilkan cairan dengan kadar etanol 80% dari cairan awal berkadar 40%. Kata kunci – Petri net, PLC, destilasi, pengaturan suhu, pemanasAbstract – Petri net is on of models commonly used for automation and manufacture. This paper reports the use of petri net in modeling automated distillation process of ethanol, using PLC as main controller. The model encompassed hardware and software parts of the prototype built. The control system was aimed to keep the system at ethanol’s boiling point of 80ºC, while maintaining the hardware’s safety especially the heater. Free style petri net was used, then implemented on PLC. The resulting prototype has performed consistent performance of automatic distillation, producing 80% ethanol out of 40% ethanol.Keyword – Petri net, PLC, distillation, temperature control, heater
Design and Implementation of Electronic Control System of Blood Pump for Hemodialysis Machine Andi Iswahyudi; Pratondo Busono; Yaya Suryana; Anwar Mujadin; Dwi Astharini
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 3, No 3 (2016)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v3i3.221

Abstract

Abstract – there are three methods of renal therapies, hemodialysis is the primary choise. This is because of the cheaper price compared to the CAPD. In addition, people in indonesia are still not understand the CAPD method. However, there are still many problems in the therapy using hemodialysis machine. This research aims to develop and to know the performance of the electronic control system for blood pump to match the ideal flowrate that will be used in hemodialysis treatment. This research resulting the blood pump charateristic is 179,4 step/ml when using glucose 10% and 168,2 step/ml when using glucose 20%. Based on fluid density, glucose 20% have the best performance with relative of error 0,06% at rpm 5 with 400 ml volume desired. From the result with rpm variation, the system has linearity with the slope M = 8970 step/ml = 4,2 rotation/ml using glucose 10%, and M = 8410 step/ml = 3,97 rotation/ml using glucose 20%. Which mean the slope is equivalent with the increased volume around 48,4 - 53,3 ml. It mean the blood pump rotation is constant and the system is working according the flowrate desired. It is found from the result, that many hardware factors can reducing the blood pump performance such as the roller degradation and the flexibility of the hose. Keywords – Renal Disease, Hemodialysis, CAPD, Blood pump, Flowrate
Mendisain GUI Untuk Menampilkan Nilai FFT dan IFFT Menggunakan LabVIEW Riny Alfina; Indrawan Arifianto; Dwi Astharini; Putri Wulandari
TESLA: Jurnal Teknik Elektro Vol 21, No 1 (2019): TESLA: Jurnal Teknik Elektro
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.264 KB) | DOI: 10.24912/tesla.v21i1.3250

Abstract

Methods FFT (Fast Fourier Transform) is a method for solving discrete signals which method IFFT (Inverse Fast Fourier Transform) is the reciprocal of the FFT method. Basically FFT only used for transformation and must not be separated from the method DFT (Discrete Fourier Transform). DFT is a mathematical transformation method for discrete time signal into a frequency domain. Examples for use of FFT-IFFT such as voice processing, OFDM and others. In this project the author designed the GUI for displaying the FFT and IFFT using LabVIEW. GUI design using Labview will inputed signal infromation or sample as desired and can be changed. From these results we obtained the value of V (amplitude), the value of the frequency and I/O (input/output) can be displayed in a single VI.Metode FFT (Fast Fourier Transform) merupakan metode untuk pemecahan sinyal diskrit yang mana metode IFFT (Inverse Fast Fourier Transform) adalah kebalikan dari metode FFT. Pada dasarnya FFT hanya digunakan untuk melakukan transformasi dan tentunya tidak lepas dari metode DFT (Discrete Fourier Transform). DFT merupakan metode transformasi matematis untuk sinyal waktu diskrit ke dalam domain frekuensi. Contoh untuk penggunaan FFT- IFFT seperti pengolahan suara, OFDM dan lain-lain. Pada projek ini penulis mendisain GUI untuk menampilkan nilai FFT dan IFFT menggunakan LabVIEW. Disain GUI menggunakan LabVIEW ini akan diinput sinyal informasi atau sample sesuai yang diinginkan dan dapat diubah-ubah. Dari hasil tersebut maka didapatkan nilai V (Amplitude), nilai frekuensi dan I/O (Input/Output) dapat ditampilkan dalam satu VI.
Co-Authors Abdillah, Muhammad Hasya Afisha, Rifqy Ahmad Husin Lubis Ahmad Zulkarnaen Aina Sabrina Alamsyah, Rahmadina Alamtaha, Rahmat Andi Iswahyudi Anwar Mujadin Aprilia Tri Purwandari Arizka Arizka Ary Mayola Ary Syahriar Ary Syahriar Aryadi, Kian Assidqi, Nurul Imam Aulia, Tsaura Auni, Khairul Azmi Azizah Azzahra Azzahra, Azmi Azizah Bambang Kurniawan Budi Aribowo Danny M Gandana Denny Hermawan Dharmawan, Fauzan Fadjar Iftikar Fiqri Ibrahim Amien Gandana, Danny M Hamid, Sofian Ibrahim Ibrahim Imam Wahyudi Indrawan, Imam Wahyudi Indrawan Arifianto Lubis, Ahmad Husin M. Hariomurti Mayola, Ary Mohamad Fauzi Radsanjani Muhammad Ismail Muhammad Ismail Nasril Nasril Nasrullah Nasrullah Niken Parwati Pranata, A.J. Pratondo Busono Putra, Dwi Putra, Geordiano D.K. Putri Wulandari PUTRI WULANDARI Putri Wulandari Rahmat Alamtaha Rahmatia, Suci Raihan Zaky Thamrin Raja P Batubara Ramadhan, Fahri Reudinta Zesha Rifqy Afisha Riny Alfina Riri Safitri Romilado, Fither Rona Regen Sabilah, Muhammad Arip Putra Samijayani, Octarina Nur Stirman, Aini Nur Rachimah Subakti, Subakti Suci Rahmatia Suherman, Andika Surya Agam Tanjung, Widya Nurcahayanty Tio Apridinata Tsabitah, Nimah Tsaura Aulia Yaya Suryana Yaya Suryana Yunus Effendi