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All Journal JUTEI (Jurnal Terapan Teknologi Informasi) INSERT: Information System and Emerging Technology Journal Engineering, Mathematics and Computer Science Journal (EMACS) Green Intelligent Systems and Applications Makara Journal of Technology Electron: Jurnal Ilmiah Teknik Elektro Jurnal Informatika dan Teknik Elektro
Wahidin Wahab
Department of Electrical Engineering University of Indonesia
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering

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Design of Induction Motor Drive Without Velocity Sensor Using Current Vector Controller with Full and Reduced Observer Moving to DQ Axis Gunawan, Ridwan; Yusivar, Feri; Wahab, Wahidin; Kadir, Zuhal A.
Makara Journal of Technology Vol. 10, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Design of Induction Motor Drive Without Velocity Sensor Using Current Vector Controller with Full and Reduced Observer Moving to DQ Axis. The observer is used in estimation velocity sensor usually in α-β axis, therefore this situation will need an extra transformation when we want to add compensator because the flux model is in direct and quadrature-axis dq. Every used the transformation to make possible emerge an error. So in this simulation is used a method to estimate the velocity of induction motor drive with observer that is moved to dq-axis. The model of actual motor used is in alfa-beta axis, but the observer use the motor models in rotor flux oriented control (RFOC).This matter, also to prove that the different models of motor drives can be used between the actual and estimated one. The simulation results with C-MEX S-function Matlab/Simulink 6.5 to show that the full order observer in dq axis gives better performance than the reduced order observer.
Analisis Penghematan Daya Listrik dengan Implementasi FX-80 Supervisor Controller pada Sistem Water Chiller Yoshua, Axel; Wahab, Wahidin; Hugeng
Jurnal Terapan Teknologi Informasi Vol 8 No 2 (2024): Jurnal Terapan Teknologi Informasi
Publisher : Fakultas Teknologi Informasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21460/jutei.2024.82.358

Abstract

This research aims to analyze electrical power consumption and cooling system efficiency between the FX-80 Supervisor Controller and a system without a controller in the field. Measurements are carried out for one year by taking data on electrical power consumption and Coefficient of Performance (COP) every month. The research results show that the system with the FX-80 Supervisor Controller consumes lower electrical power and has a higher COP than the system without the controller.  The higher efficiency of systems with controllers represents significant energy savings potential for companies. This research recommends the use of controllers in cooling systems to increase energy efficiency.
Design of A Braille Printer Based on ESP32 Microcontroller with Voice Input Beatrix, Maria; Wahab, Wahidin; Wulandari, Meirista
Green Intelligent Systems and Applications Volume 5 - Issue 1 - 2025
Publisher : Tecno Scientifica Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/gisa.v5i1.592

Abstract

Braille is a tactile phonetic alphabet system invented by Louis Braille, a blind teacher from France, in the 1800s. The Braille system was recognized as "a vital language of communication, as valid as all other languages in the world" in 2005. There are other alternatives, such as touch-based methods, to convey information that is generally obtained through sight. One of them is the use of Braille letters for reading, writing, and improving welfare by increasing insight. However, only 52 special schools in Indonesia have printers for Braille books. Limited access to Braille printing facilities in Indonesia is due to high costs. The cost of a printer machine, approximately 50 million per school, poses a challenge in providing learning facilities. This research proposes a compact and cost-effective Braille printer using an ESP32 microcontroller with both speech and mechanical switch inputs. The mechanical switch is used for typing text to be printed, while the microphone captures sound input in the form of audio, as it is easier to use. Audio input is processed using speech-to-text technology. The speech-to-text process is carried out with speech recognition, which listens to the words spoken by the user and matches them with the data in the module to execute specific commands. This Braille printer is designed to print Braille letters based on data received directly from individuals with and without disabilities. The printer accepts input in the form of speech or text, which is then sent to the processing module, the ESP32 microcontroller. Once all data is processed, the Braille printer module controls axis movements using a stepper motor. Braille prints are embossed to create raised dots on paper. Experimental results demonstrate 100% accuracy for both speech and typing inputs, along with reliable printing performance on standard HVS paper. Compared to previous solutions, the proposed design is more versatile, affordable, and portable. This study presents a practical solution for increasing access to Braille education and information.
Computer Resource Utilization Analysis for Microsoft Excel and Python in Data Processing Kelvin, Kelvin; Wahab, Wahidin; Wulandari, Meirista
Engineering, MAthematics and Computer Science Journal (EMACS) Vol. 6 No. 2 (2024): EMACS
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/emacsjournal.v6i2.11736

Abstract

Data analysis is essential for gaining insights and making informed decisions. A crutial step in data analysis is data processing, which involves preparing and filtering raw data to ensure accuracy, consistency, and structure. While Microsoft Excel is commonly used for data processing, it is susceptible to human errors and has limitations in handling large datasets. Python provides an alternative by automating data processing through scripts executed by the interpreter. The superior software for data processing is obtained by comparing the computer resource utilization based on statistical theory approach, Wilcoxon signed-rank test. This test is appropriate because it does not require the assumption of a normal distribution, providing flexibility in comparing computer resource utilization between Microsoft Excel and Python. Microsoft Excel and Python proceed *.csv and *.xlsx files, then Task Manager recorded the data of computer resource utilization for each processing step. The Wilcoxon signed-rank test analyzes the data and evaluating two hypotheses. H0 (there is no any significant differences in computer resource utilization between Microsoft Excel and Python are calculated for each data processing) and H1 (there is significant differences in computer resource utilization between Microsoft Excel and Python are calculated for each data processing). The sum of ranks in Wilcoxon test are compared to the critical value from the Wilcoxon distribution table to determine the accepted hypothesis. Based on the Wilcoxon test results, hypothesis H1 is accepted, indicating a significant difference in computer resource utilization between Microsoft Excel and Python.
Analisis Akurasi dan Kecepatan Waktu Pencarian Warna Produk Menggunakan ChatGPT dan Website Produk Susilowati, Vara; Setyaningsih, Endah; Wahab, Wahidin
INSERT : Information System and Emerging Technology Journal Vol. 5 No. 2 (2024)
Publisher : Information System Study Program, Faculty of Engineering and Vocational, Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/insert.v5i2.79903

Abstract

Informasi produk merupakan elemen penting dalam menarik minat konsumen, dimana nama dan warna produk memainkan peran krusial dalam keputusan pembelian. Warna produk, misalnya, dapat mempengaruhi emosi dan perasaan konsumen, sehingga presisi informasi mengenai warna sangat penting. Dalam konteks e-commerce, revisi terhadap nama, kode, dan warna produk sering dilakukan untuk memastikan kesesuaian antara data produk di situs website dan dataset internal perusahaan. Proses pengecekan manual terhadap warna produk pada situs website resmi memerlukan banyak waktu. Penelitian ini bertujuan untuk mengetahui seberapa efektif ChatGPT dalam mengidentifikasi warna produk dan bagaimana kecepatan waktu yang dibutuhkan untuk mencapai hasil. ChatGPT digunakan untuk mengidentifikasi warna produk dengan cara memberikan prompt yang relevan dan menunggu jawaban yang diberikan oleh ChatGPT. Kemudian, hasilnya dibandingkan dengan website pembuat produk. Kecepatan waktu yang dibutuhkan untuk mencapai hasil yang akurat juga dihitung dan dibandingkan dengan website produk. Penelitian ini menggunakan desain eksperimen, di mana akan dikumpulkan 200 data e - commerce yang terdiri dari nama produk dan kode produk. Data tersebut akan digunakan untuk mengevaluasi kinerja ChatGPT dan website dalam mengidentifikasi warna produk. Hasil penelitian menunjukkan bahwa akurasi ChatGPT dalam mengidentifikasi warna produk hanya mencapai 59% dengan kecepatan waktu rata-rata 4,37 detik, lebih cepat dibandingkan website produk. Meskipun demikian, website produk memberikan akurasi 100% dalam identifikasi warna produk, meskipun waktu yang dibutuhkan lebih lambat, yaitu 4,7 detik. Oleh karena itu, meskipun ChatGPT lebih cepat, website produk tetap lebih terpercaya dalam hal akurasi pencarian warna untuk melengkapi dataset suatu produk mengenai warna produk.
Analisis Perbandingan Sensor Suhu dan Kelembaban DHT-11 DAN AHT-10 Dengan Perangkat Lutron AM4205A Hanes, Natanael Michael; Wahab, Wahidin; Setyaningsih, Endah
INTRO : Journal Informatika dan Teknik Elektro Vol 3 No 1 (2024): INTRO : Jurnal Informatika dan Teknik Elektro Edisi Juni 2024
Publisher : Fakultas Teknik dan Informatika Universitas Panca Marga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51747/intro.v3i1.1986

Abstract

Temperature and humidity sensors are key components in various systems related to environmental monitoring, process control, and product safety. Accurate measurement of temperature and humidity is crucial for maintaining product quality, ensuring operational safety, and minimizing the risk of equipment damage or failure. However, temperature and humidity sensors require regular calibration to ensure measurement consistency and accuracy. Without proper calibration, these sensors are prone to drift or changes in measurement characteristics over time, environment, and usage, which can lead to significant measurement errors and negatively impact product quality, operational safety, and process efficiency. This study aims to develop expertise in programming and calibrating temperature and humidity sensors for field applications. The primary focus is to compare the performance of the DHT11 and AHT10 sensors using the Lutron AM4205A device as a reference measurement. The results of this study are expected to provide insights into the reliability and accuracy of these sensors.
Sistem Peringatan Gempa Bumi pada Gedung Bertingkat Terintegrasi dengan Pintu Darurat Otomatis Mulyo, Alfina; Setyaningsih, Endah; Wahab, Wahidin
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 5 No 1: Jurnal Electron, Mei 2024
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v5i1.105

Abstract

Indonesia terletak  diantara pertemuan lempeng besar tektonik dunia dan masuk ke dalam wilayah Ring of Fire. Tinggi nya tingkat aktivitas tektonik menyebabkan Indonesia sering kali dilanda bencana gempa bumi yang dapat memberi risiko ancaman dan dampak yang signifikan terhadap kerusakan properti, infrastuktur, bahkan korban jiwa. Gempa bumi yang tidak dapat diprediksi kedatangannya dapat mengguncang gedung bertingkat yang menimbulkan kondisi penghuni menjadi panik dan berhamburan keluar menuju titik evakuasi. Optimasi waktu dalam memberikan peringatan dan memulai evakuasi sangat penting untuk mengurangi risiko adanya korban jiwa. Oleh karena itu, dirancanglah sebuah sistem peringatan bencana gempa bumi pada gedung bertingkat yang mampu membuka pintu darurat secara otomatis dilengkapi dengan alarm dan lampu darurat. Sistem peringatan gempa ini akan mengaktifkan pintu darurat otomatis, alarm, dan lampu darurat secara bersamaan. Konsep ini dirancang dalam bentuk prototipe yang terdiri dari sensor accelerometer MPU6050, Arduino Nano, motor servo MG90, buzzer, pilot lamp, serta modul catu daya UPS DC 12V. Batas nilai percepatan total untuk mengaktifkan sistem adalah 1.89 m/s2 yang diambil dari hasil perhitungan rata-rata total pengujian sensor MPU6050 terhadap meja simulasi gempa saat digerakan pada 1,5 Hz, 2,5 Hz, 3,5 Hz, 4,5 Hz, 5,5 Hz, dan 6 Hz. Sistem dipasang pada maket bangunan bertingkat 3 dan diuji di atas meja simulasi gempa sebanyak 5 kali dengan frekuensi yang berbeda seperti disebutkan diatas. Hasilnya sistem peringatan gempa bumi ini dapat mengaktifkan modul alarm, modul lampu darurat, dan modul aktuator untuk membuka pintu darurat secara bersamaan
Co-Authors Beatrix, Maria Benyamin Kusumoputro Endah Setyaningsih Feri Yusivar Hanes, Natanael Michael Hugeng Kadir, Zuhal A. Kelvin Kelvin M. Ridwan Meirista Wulandari, Meirista Mulyo, Alfina Ridwan Gunawan Susilowati, Vara Yoshua, Axel Zuhal Kadir, Zuhal