Jurnal Rekayasa Elektrika
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Perancangan Struktur Kontrol Penggilingan Batubara pada Sistem Pembakaran Batubara
Get PDFThe inability of the coal mill control structure to monitor and control pulverized coal ow causes operationaland environmental problems. The research was done to design the new control structure for coal mill in coal firingsystem to achieve an improvement on control system performance compared to the existing control structure.Cascade control, blend station, and feedback control was used to control the ow of coal, the ow of primary air,and temperature of the pulverized coal. The result of the evaluation shows that the new control structure capableof fulfilling all the control objectives applied to it. Implementation of the new control structure capable to make thestep response of the coal mill to have an average settling time at 161.75 seconds with 0% overshoot. The new controlstructure also capable to make the pulverized coal fineness at the range of 70% to 75% and moisture content at therange of 2.18% to 2.28%. The result of the evaluation makes the control performance of the new control structure is better than the previous coal mill control structure
Maximum Power Point Tracking Menggunakan Algoritma Artificial Neural Network Berbasis Arus Hubung Singkat Panel Surya
Get PDFThe conversion of solar energy into electrical can be utilized by using the solar panel, but the energy conversion ratio is still low. Maximum Power Point Tracking (MPPT) is a method used to increase energy production in the process of converting electrical to the solar panel. Artificial Neural Network (ANN) is one of the soft-computing methods that can be applied as MPPT with the advantage of having a learning process, very stable, fast, doesnt require complicated mathematical modeling, and has good performance. ANN is proposed with input from the short circuit current of the solar panel and is used as a reference for the ANN to reach the maximum power. The process of detecting a short circuit current is indicated by a momentary decrease of the power by the solar panel. The results show the proposed algorithm can reach the maximum power operating point of the solar panel despite the change of radiation. When at maximum power operating point, ANN can hold the value, so the resulting value doesnt change and doesnt generate ripple. At radiation of 1000 W/m2 and using 100 WP, ANN can produce a maximum power of 99.97 Watts with a time of 0.063 seconds
Model Identifkasi Sinyal Jantung Pertama (S1) dan Sinyal Jantung Kedua (S2) pada Janin
Get PDFProcess of identifying fetal heart sound signals is imperative in recognizing congenital heart functionthat caused by many factors, such as hereditary factors and food intake of pregnant mothers. This study developeda method for processing heart signals to separate normal fetal phonocardiogram signals from noise by utilizingthe Complete Empirical Mode Decomposition (CEEMD) algorithm which is integrated with the Pearson Distancemetric. Heart signals that have been separated from noise are then processed using the Shannon Energy equationin order to sharpen the intensity of the first heart signal (S1) and the second heart signal (S2), but at the same timesuppress the intensity of the residual noise in the signal. Based on the experiment results from 75 normal fetal heartsound cycles, the model that has been developed is able to identify the S1 signal and S2 signal, the time duration ofT11 (S1-S1), and the time duration of T12 (S1-S2). Average duration of T11 and T12 acquired in this research canpossibly be used as a reference for measuring the normal duration of fetal heart sound signals
Evaluasi Penerapan Metode Cell Splitting Terhadap Peningkatan Kapasitas dan Kualitas Jaringan LTE
Get PDFBased on the results of the survey and drive test on Jalan Karawitan Bandung - Indonesia, the value ofradio parameters is considered poorly accepted by the Standard Operator Performance Indicator (KPI) standards.The parameters observed were Reference Received Power (RSRP) -90 dBm, Signal to Interference Noise Ratio(SINR) 5 dB, and throughput 800 Mbps. This region is a potential market region including tourist attractions,businesses, offices, and housing. In addition, based on data from the Operating Support System (OSS), there is animbalance between traffic users and cell capacity that supports network quality. In addition, there are customercomplaints about the quality of the Long Term Evolution (LTE) network in the office area. In this article cellseparation planning is carried out to increase the capacity and quality of LTE networks using Atoll 3.3 software. Theresults of planning show that an increase in network performance is the value of RSRP increased by 13.32%, SINRincreased by 52.75%, and throughput increased by 236%
Analisis Sistem Photovoltaic Beban Arus Searah Terhubung Jala PLN dengan Penyearah Terkendali
Get PDFPhotovoltaic (PV) systems can be connected to the utility grid to ensure the reliability and continuity of the electrical energy supply. Although the output of the PV modules and many electrical loads are direct current (DC), most grid connected PV systems use alternating current (AC) grid through the inverter. This study presents an analysis of DC microgrid PV system connected to PLN utility grid using controlled rectifier. The controlled rectifier circuit uses a thyristor which can be controlled at its ignition angle to regulate the output voltage and current supplied from utility. The proposed PV system configuration simulations are performed using PSIM software. The system supplies resistive loads in the form of DC lights. Simulations are carried out with variations in load resistance and the thytistor ignition angle. The simulation results show the rectifier circuit has a voltage ripple of 1.57 V (6.47%). While the efficiency of the system under various loading conditions and ignition angle varies between 95.08%97.72%. The highest system efficiency is obtained under high thyristor ignition conditions
Hardware Simulation of Rear-End Collision Avoidance System Based on Fuzzy Logic
Get PDFRear-end collisions are the most common type of traffc accident. On the highway, a real-end collisionmay involve more than two vehicles and cause a pile-up or chain-reaction crash. Referring to data released by theAustralian Capital Territory (ACT), rear-end collisions which occurred throughout 2010 constituted as much as43.65% of all collisions. In most cases, these rear-end collisions are caused by inattentive drivers, adverse roadconditions and poor following distance. The Rear-end Collision Avoidance System (RCAS) is a device to help driversto avoid rear-end collisions. The RCAS is a subsystem of Advanced Driver Assistance Systems (ADASs) and becamean important part of the driverless car. This paper discusses a hardware simulation of a RCAS based on fuzzy logicusing a remote control car. The Mamdani method was used as a fuzzy inference system and realized by using theArduiono Uno microcontroller system. Simulation results showed that the fuzzy logic algorithm of RCAS can workas designed
Sistem Multi-Sensor Nirkabel Berbasis RFID Untuk Pemantauan Keaktifan Siswa
Get PDFThis study aims to design a multisensor observation system, develop a microcontroller-based prototypewith ESP8266 and RFID modules, and analyze the performance of the prototype. From the testing carried out bytagging each time students do activities, the client tag data will be sent to the server, and the results are displayedPLX-DAQ. With the 50 tag cards that have registered the IDs of each student, it shows that those who attend theschedule will be given the logic "1" (otherwise logic "0"), and attendance data will be obtained by calculating thenumber of attendance of students in four types of activities in four locations. The data is transmitted to Data-loggersthrough two configurations, namely Data-logger as the client (indirect), and Data-logger as a server (direct). From the twoconfigurations, it was found that the configuration of Data-logger as a server had a performance of 19.08% betterthan Data-logger as a client. From the data processing, it was found that the highest activity of students was theinterest in the activities of language institutions (95.92%), followed by religious activities (95.83%), teaching andearning activities (93.88%), and reading (79.59 %
Autonomous Mobile Robot based on BehaviourBased Robotic using V-REP SimulatorPioneer P3-DX Robot
Get PDFThis article describes the design and implementation of behavior-based robotic (BBR) algorithm on awheeled mobile robot (WMR) Pioneer P3-DX in a maze exploration mission using V-REP simulator. This robot musttrace and search for targets placed randomly on a labyrinth. After successfully meeting the objective, robot runsback to home position using the nearest path. Robot navigation system applies BBR algorithm to reach the targetusing behavior modules which work simultaneously to obtain the desired robots trajectory. The most fundamentalbehavior which is highly affordable to build on the robot system is a wall-following behavior. To make the robotcould follow the wall in a safe, smooth and responsive condition, proportional-integral-derivative (PID) controlleris applied. PID controller runs by utilizing the reading of sixteen proximity sensors carried on Pioneer P3-DX robottoward the expected wall distance while the robot is exploring the labyrinth. To ensure the designed system worksproperly, several tests were conducted, including BBR test and PID controller test. BBR test shows that the systemcan choose the shortest track when returning to home position. The PID controller test produces robot movementwith maximum deviation and settling time for about 0.013 m and 30 seconds, respectively
Rancang Bangun Transmitter dan Receiver untuk Sistem Komunikasi Akustik Bawah Air
No full textSince 2016 acoustic detection technology for marine resources had been developed which was relativelysimple and sophisticated, namely Ocean Acoustic Waveguide Remote Sensing. The technology was useful formonitoring and quantifying underwater targets such as marine resources and the environment that can be conductedcontinuously, sustainable, in situ, real-time, and low cost. This research had designed an Ocean Acoustic Remote Sensingtechnology instrument to detect signal propagation range. The step taken in this research was to build an acousticdevice system such as transmitter and receiver based on TR-103 transmitting transducer sensor and Benthos Aq-1receiving transducer. Based on the experiment results, the transmitter and receiver designed were confrmed withthe measured piezoelectric quantity specifcations. The results at open ocean in the Thousand Islands showed thedetection range of transmitter signal propagation to the receiver was 100 m
Analisis Performa Link Stability dari Faktor Kecepatan untuk Dinamisasi Zona pada Zone Routing Protocol
Get PDFZone dynamization is carried out in the Zone Routing Protocol to allow the adaptation of the routing protocol to VANET network conditions. Zone dynamization is accomplished by periodically updating the radius within a configured time period. The value of link stability from the factors that influence network conditions is used as a reference in the radius values renewal process. From the test and simulation results, speed is the most dominant factor in link stability composition. Comparison between ZRP and zone dynamics against traditional ZRP shows better performance than ZRP with zonal dynamics when measured from metric analysis of packet delivery ratio, delay, and routing overhead. The increase in ZRP performance can occur because the zoning dynamics carried out make ZRP more adaptive to network conditions so that it does not work too proactively or reactively