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Sainstech Nusantara
Published by Nusantara Publisher
ISSN : 30630657     EISSN : -     DOI : https://doi.org/10.71225/jstn.v1i4
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering
The journal publishes original papers that cover, but are not limited to, the following topics: Mechanical Engineering Chemical Engineering Electrical Engineering Civil Engineering Chemistry Energy Transportation Computer Science Physic Material Science
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 35 Documents
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Design and Implementation of an IoT-Based Speed Control and Monitoring System for 3-Phase Induction Motors Fanani, Wisnu Bachtiar; Kustanto, Jaka Septian; Setiawan, Hadi; Edy Kristiyono, Antonius
SAINSTECH NUSANTARA Vol. 2 No. 3 (2025): August 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i3.84

Abstract

As industries seek to improve product quality and reduce costs, automation tools like 3-phase induction motors have become indispensable due to their simplicity, cost-effectiveness, efficiency, and ease of maintenance. This study investigates the automation of monitoring for 3-phase induction motors through the integration of various components, including the A3114 Hall Effect sensor, PZEM-PP4T sensor, 20x4 LCD, ESP32 module, relay, Mitsubishi D700 inverter, and MCP 4725 sensor. Testing results show high accuracy in measuring critical motor parameters such as speed, voltage, and current. The Hall Effect sensor demonstrated an average accuracy of 4.12% compared to a tachometer, while the PZEM sensor exhibited a 0.90% accuracy for voltage and a 0.98% accuracy for current when compared to a multimeter, affirming the reliability of the system. Overall, the system provides consistent and precise measurements, transforming manual monitoring into an efficient automated process. This advancement significantly enhances the reliability and effectiveness of 3-phase motor monitoring in industrial applications
Optimization Control in MG-16 DC Motor Using LQR and LQT Configurations Nugraha, Anggara Trisna; Muhammad Bilhaq Ashlah; Rama Arya Sobhita; Dhadys Ayu Juli Anjhani
SAINSTECH NUSANTARA Vol. 2 No. 3 (2025): August 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i3.105

Abstract

DC motors are widely used electronic components commonly found in everyday applications. Typically, when a load is applied, a DC motor tends to decelerate and fails to maintain a constant speed. To address this, motor speed can be controlled by adjusting the input voltage. However, to maintain consistent speed under varying loads, a control system is necessary. LQR works by adjusting the motor response to closely approach the desired setpoint, while minimizing both overshoot and undershoot within the system. On the other hand, LQT is a linear control strategy designed to ensure that the system output closely follows a time-varying reference or setpoint. When implemented, LQR yields a motor response that aligns with the target setpoint without any overshoot or undershoot. In contrast, if LQR is not applied, the motor response deviates significantly from the desired target and takes a longer time to settle. Meanwhile, the LQT method produces a quicker response reaching steady state in approximately ±0.5 seconds although it does introduce some overshoot and slight ripple in the signal. Despite these minor drawbacks, LQT is often favored over LQR for applications involving the MG-16B DC motor due to its superior speed in reaching the setpoint.
Simulation Analysis of System Optimization Using an EC-Max 40 Type DC Motor Plant Muhammad Izzul Haj; Nugraha, Anggara Trisna; Rama Arya Sobhita; Rony Dwi Kristiawan
SAINSTECH NUSANTARA Vol. 2 No. 3 (2025): August 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i3.107

Abstract

A control system functions to regulate one or more variables, ensuring they remain at specific values or within desired limits. The primary aim is to achieve optimal system performance through effective control strategies. In this study, system optimization is explored within a closed-loop configuration using a DC motor as the plant. The motor selected for this analysis is the EC-Max 40, a direct current motor that converts electrical energy into mechanical motion. Utilizing the motor's datasheet, a first-order mathematical model is developed and implemented in Matlab Simulink for simulation purposes. The system design incorporates both Linear Quadratic Regulator (LQR) and Linear Quadratic Tracker (LQT) methods to evaluate and compare their performance. The analysis focuses on the step response of the system observing how the output behaves in response to input variations both under ideal conditions and in the presence of noise. The simulations reveal that both LQR and LQT methods produce similarly effective results; however, the LQT approach demonstrates a faster convergence to stability compared to the LQR method.
Accuracy Assessment of Railway Track Inspection Equipment 'Void Meter' Based on the Internet of Things Adi, Wahyu Tamtomo; Risnanto Nugroho, Bagas; Wardani Puruhita, Hana
SAINSTECH NUSANTARA Vol. 2 No. 3 (2025): August 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i3.115

Abstract

Dynamic skilu caused by ballast voids is one of the main causes of train derailments in Indonesia. Early detection of this condition still relies on measurement trains, which have limited inspection intervals. This study aims to test the accuracy of the third-generation void meter based on the Internet of Things (IoT), which has been redesigned to enhance the precision of measuring ballast voids, train speed, and rail temperature. The research methods include the collection of primary and secondary data, field testing of the device, and statistical analysis. Analysis was conducted using standard deviation tests, ANOVA, the Mann–Whitney test, and MAPE. Test results showed that the system can display data in real-time through the Blynk and ThingSpeak platforms and provide automatic notifications when measurement values exceed tolerance limits. The standard deviation of the device is lower than that of conventional devices, MAPE for all parameters is <10%, and the results of the ANOVA and Mann–Whitney tests show no significant differences between data groups. Thus, the third-generation void meter has proven to have high accuracy and consistency, making it suitable for continuous railway track inspections. Additionally, the void meter has been proven to be 59.70% more cost-effective than the densometer.
Aerodynamic Performance Optimization on NACA 2412 Airfoil Flap With The Addition of Riblets Faadihillah, Almer; Hariyadi Suranto Putro, Setyo; Wulansari, Ajeng
SAINSTECH NUSANTARA Vol. 2 No. 3 (2025): August 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i3.118

Abstract

The development of technology in the world of aerodynamics, one of which is research on airfoils. There have been many various studies that have been used to examine airfoils in various flap configurations according to their use. along with the development of the times, research is increasingly easy to do without taking up a lot of time and spending a lot of money. Aerodynamic characteristics are very important in the field of aerodynamic application science aimed at obtaining the maximum performance of an airfoil shape. Therefore, in this case, research on the aerodynamic characteristics of an airfoil is very necessary to get results in the form of airfoil configuration development with force output results for better performance. The results of this study indicate that there is an increase in the performance of NACA 2412 airfoil with the addition of v-groove riblets compared to without v-groove riblets. The existence of v-groove riblets, can delay the occurrence of separation. The simulation shows that the highest lift coefficient increase occurs at α = 14˚ with an increase of 3% lift coefficient and can reduce drag by 7.3% at α = 2˚ so it can be concluded by adding riblets to the airfoil can improve the performance of the Airfoil

Page 4 of 4 | Total Record : 35

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