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Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 24 Documents
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Search results for , issue "Vol. 11 No. 4 (2023)" : 24 Documents clear
RANCANG BANGUN IDENTIFIKASI IDENTITAS MENGGUNAKAN RFID BERBASIS ESP32 UNTUK SMART PARKING SYSTEM DI FAKULTAS TEKNIK UB Imet Mitsuin Banjar Nahor; Eka Maulana; Akhmad Zainuri
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

The parking area at Universitas Brawijaya which functions as a vehicle storage place for students and the academic community is often used by people outside UB because the condition of the portal in and out of the parking area is always open. In full parking conditions, students must enter the parking area to check the parking quota because there is no information on parking availability and this causes mobilization in the parking area to be disrupted. To overcome this problem, it is necessary to create an RFID-based smart parking monitoring system that functions to scan RFID tags as a condition for opening portals and parkingarea access. In this smart parking system, testing is carried out using a design (prototype) that is in accordance with actual parking conditions. The parking system is equipped with an RFID reader, servo actuator that functions as a portal, seven segment display as parking availability information and ultrasonic sensors as distance detection to close the portal. From the results of the study, the tools made are able to work according to the expected functions. Information on parking availability on the display is 100% in accordance with actual conditions, RFID reading positions are most effective at an angle of 90º with a maximum reading distance of 4 cm. RFID readers are capable of reading RFID tags a maximum of 2cm in the state where the RFID tag is in a wallet. The ultrasonic sensor in this study works with a maximum distance of 25 cm. Keywords: Smart parking, Prototype,RFID, ultrasonic sensor, RFID Reader,RFID tag,actuator,
DESAIN DAN IMPLEMENTASI RANGKAIAN RCD SNUBBER PADA DC-DC FULL BRIDGE CONVERTER Dhika Abiyoso Rahardianto; Waru Djuriatno; Rini Nur Hasanah
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

DC-DC Converter is an important component in modern electric power systems. This converter is used to convert DC voltage from one level to another, which is indispensable in various types of applications ranging from everyday electronic equipment to industrial use. DC-DC full bridge converter is one of the commonly used power converter topologies. However, these converters often face challenges in the form of voltage spikes that can damage components and oscillations that interfere with system performance. In this study the authors designed a RCD snubber circuit that could overcome this problem. The RCD snubber circuit consists of resistors, capacitors and diodes which are connected in parallel to each MOSFET. The test results show that before the snubber circuit is installed, there is a voltage spike that reaches 2 times the input voltage to more. In addition, high-frequency oscillations occur which require 1µs and 4µs to reach steady state. After adding the RCD snubber circuit, retesting was carried out and it was found that the voltage surge had reduced to about 1.2 times the input voltage. In addition, the oscillations that occur also require faster time to reach steady state, which is only 0.4µs and 1.5µs. Based on the test results and calculations, the power dissipation on the snubber resistor is also obtained. At an input voltage of 12V, the power dissipation is 2,234% input power, then at an input voltage of 24V, the power dissipation is 2,273% input power and at an input voltage of 36V, the power dissipation is 1,983% input power. From all the test results show that the RCD snubber circuit is able to reduce the voltage spikes and also the oscillations that occur at the moment of transition. Keywords: DC-DC full bridge converter, snubber, spike, oscillation, transition, dissipation
PEMODELAN SLIDING MODE CONTROL UNTUK REGULASI TEGANGAN KELUARAN DC-DC ISOLATED FULL BRIDGE CONVERTER Muhammad Akbar Amran; Mochammad Rusli; Waru Djuriatno
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Technological developments in electronic components and circuits are capable of producing a direct current (DC) power supply system, which is produced by converting the input DC voltage to a higher or lower output DC voltage. To enhance energy conversion efficiency, precise and responsive control is essential. One widely used approach is to employ a DC-DC full bridge converter topology. The objective of this study is to model a Sliding Mode Control (SMC) to regulated the output voltage of a DC-DC full bridge converter. The research involves designing and simulating the converter circuit subsystem, controller design, and specifying the equipment to closely resemble the in real conditions. Through experimentations, it is observed that the designed controller meets the expected specifications allowing the converter to simulate stable output voltage regulation. The SMC methods is chosen for its adaptive and nonlinear nature, enabling it to produce a constant output voltage even when the input voltage from the DC source varies. The input DC voltage specification is 24 V, while the output voltage generates 48 V. MATLAB/Simulink is employed for simulation to design the entire system and present the research result in graphical form. Keyword: Fuel Cell, DC-DC Full Bridge Converter, Sliding Mode Control, Voltage Regulation.
SISTEM PENGONTROLAN SUHU DAN PH AIR DENGAN KONTROL LOGIKA FUZZY BERBASIS ARDUINO PADA PERANGKAT SMART AKUARIUM UNTUK IKAN MAS KOKI M Naufal Bariz Abdullah; Mochammad Rusli; Goegoes Dwi Nusantoro
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

This study aims to realize a system of controlling the degree of acidity of water and temperature of aquarium water in goldfish using fuzzy logic control so that it is expected to be able to produce healthy and good quality fish. The input data consists of pH and temperature while the output water flow debit is discharged by DC water pumps and heaters.There are pH and temperature sensors that each read every 1.5 seconds with fuzzy output discharge cycles every 1 minute. The design was carried out by the Sugeno method. Based on the test data, 315 data were obtained within 10 minutes, where the system was able to reach the setpoint value when it was in the 292th data, with a time of 8 minutes 47 seconds. The next data of the system runs in steady state. As for steady state errors of 1,05%. Keywords: Fuzzy logic control, Sugeno method, DC water pump, heater, pH sensor, temperature sensor, goldfish.

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