JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science)
JEEMECS is an Open-Access journal who managed by Electrical Engineering Department, Faculty of Engineering, Universitas Merdeka Malang, Indonesia. The technologies are rapidly changing and updating. Thus rapid distribution and publication to researchers, engineers, and educators are very important. Our aim after receiving the manuscript and editing process required is to quickly publish the received letters. Publishing periodically 2 (two) times a year. More several other changes in JEEMECS are informed in the journal history.
Articles
96 Documents
<![CDATA[COMPARISON OF STATOR WINDINGS ON PERMANENT MAGNET GENERATORS FOR HORIZONTAL AXIS WIND TURBINE (HAWT) ]]>
<![CDATA[Basuki Winarno]]>;
<![CDATA[Jasa Kusumo Haryo]]>;
<![CDATA[Yulius Harry Widodo]]>;
<![CDATA[imam basuki]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 1 (2019): February 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i1.2718
<![CDATA[The generator is the main component for a wind power plant. The Horizontal Axis Wind Turbine (HAWT) is one of electric power plants types which has a horizontal axis. The plant is suitable to be operated in areas that have a fairly large wind speed. The low-speed HAWT generator can be designed using a permanent magnet. This paper compares the coil design of the stator generator which has 12 poles arranged in 3 phases, and the rotor part consists of 24 Neodymium (NdFeB) type permanent magnets. Based on analytical studies, the design of generator windings is varied by 3 turns and 6 turns. The tests has been carried out for 100rpm - 1000rpm generator rotation. The research conclusions are recommendations to reduce 0.5 times the rotation and at 3 times the winding in obtaining optimal performance. DOI : https://doi.org/10.26905/jeemecs.v2i1.2718]]>
<![CDATA[DESIGN AND IMPLEMENTATION SQUARE PATCH MICROSTRIP ANTENNA AT FREQUENCY 2.3 GHz ]]>
<![CDATA[Dimas Mahesa Muharom]]>;
<![CDATA[Erma Triawati CH]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 1 (2019): February 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i1.2744
<![CDATA[Abstract— In this research has been done the design and implementation of microstrip antenna for WiMAX application working on a frequency of 2.3 GHz, with the size of 5 x 5 cm and generate the appropriate parameter regulation WiMAX Dirjenpostel [1]. The method used i.e. square patch, proximity coupled feeding and modified slot on the antenna ground. Its design stages, namely to determine the initial size of the antenna, simulation, and optimization. Occurs the difference measurement results and simulations that are caused by factors of fabrication and measurement methods are not ideal. The difference in those results i.e. increase the gain of 6.8634 dB or increased 363.79% (simulated results 1.8866 dB, measurement results 8.75 dB), decrease the bandwidth of 36 MHz (from 131 MHz be 95 MHz). For differences in the VSWR of 0.1258 and the input impedance of 3,666 Ω it can still be tolerated and the radiation pattern produced is identical. Index Terms—Microstrip Antenna, Square Patch, Proximity Coupled, Modified Slot. DOI : https://doi.org/10.26905/jeemecs.v2i1.2744]]>
<![CDATA[DESIGN OF WATER LEVEL CONTROL SYSTEMS USING PID AND ANFIS BASED ON FIREFLY ALGORITHM ]]>
<![CDATA[Machrus Ali]]>;
<![CDATA[A N Afandi]]>;
<![CDATA[Asnun Parwati]]>;
<![CDATA[Ruslan Hidayat]]>;
<![CDATA[Cholil Hasyim]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 1 (2019): February 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i1.2804
<![CDATA[At present, a controlling system of the fluid flow measurement is needed in industrial processes. Determination of the water quantity is also used to reduce the volume of water usage in the holding tank varies. The effort to overcome this problem has made using a system for regulating performances while a water flow based on the tank volume controlled using a PID system. This system uses a flow sensor to detect the water speed, an electric ball valve as an actuator. In principles, this tool is used to stabilize the output water speed per minute at a predetermined set point. This study is focused in five designed method comparison in associated with a water level without control, standard PID method, PID-Auto tuning method Matlab, PID-FA method, and ANFIS-PID-FA method. The results of the PID-FA training data are used as an input from ANFIS. From the simulation, it is also found that five control models have different performances while the ANFIS-PID-FA model is performed in the best control model. The ANFIS-PID-FA model has also the smallest overshot and undershot on the water level and output flow of 0.0021 pu, 0.0093 pu, 0.0072 pu, and 0.0096 puDOI : https://doi.org/10.26905/jeemecs.v2i1.2804]]>
<![CDATA[THE DESIGN OF COCONUT MATURITY PREDICTION DEVICE WITH ACOUSTIC FREQUENCY DETECTION USING NAIVE BAYES METHOD BASED MICROCONTROLLER ]]>
<![CDATA[Diana Rahmawati]]>;
<![CDATA[Haryanto Haryanto]]>;
<![CDATA[Fahrus Sakariya]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 1 (2019): February 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i1.2806
<![CDATA[The level of coconut maturity can be determined by not only observing its shell color but also by applying audio recognition approach from knocking on coconut shell. This knocking sound distinguishes young, fairly mature, and mature coconut. Recognizing the sound characteristic of knocking on coconut is usually performed by the skilled ones who are having extensive experiences and sound sensitiveness of coconut knocking. In order to substitute the skilled ones, the design of coconut maturity prediction device with acoustic frequency detection is invented. The coconut sound signal is tapped by stethoscope which is connected to MAX9814 noise sensor. Arduino Due micro-controller is used to process the signal. The process in processing the signal consists of: conversing analog signal to digital, screening the signal, and finding the average value of sound signal frequency spectrum. The signal screening uses bandpass digital filter, type IIR (Infinite Impulse Response) Elliptic order 7. This filter is utilized in order that the signal that is being processed is not some noise but the signal of knocking sound on coconut. The calculation of average value of sound signal frequency spectrum uses FFT (Fast Fourier Transform) analysis. The maturity prediction is carried out using the classification method of Naive Bayes. The input is three average value of knocking sound frequency and coconut size, and the output is classification of coconut maturity. From this research, it is generated 80% of system success rate. DOI : https://doi.org/10.26905/jeemecs.v2i1.2806]]>
<![CDATA[ANALYSIS AND IMPLEMENTATION OF UBUNTU AND MIKROTIK BASED SERVER ]]>
<![CDATA[Januardi Nasir]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 1 (2019): February 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i1.2928
<![CDATA[Internet is a primary requirement in this modern era because it is one of the information’s media and communication. Due to its rapid advancement, internet is now a main infrastructure which must be possessed by an organization, institution (education, government, service provider and others). Besides internet, other infrastructure which is also a primary requirement in an institution is a centralized storage or server. Regarding internet’s availability and server, PT Indonesia Terbit Media faces some setbacks such as the unavailability of sufficient bandwidth management and unavailability of centralized information storage. To solve those setbacks, a MikroTik router is offered to be implemented in the company’s network. Before doing research, observation is held in the company to gather information’s regarding current network. Along with observation, focus group discussion is held with the staffs. After information’s are gathered, current network is analyzed then a new topology is proposed. After the proposal is approved, testing phase is initiated to know the contributions of newly proposed network in solving the mentioned setbacks. Results from the implementation are such as bandwidth management is applied in new network which is resulting in stable internet’s speed even though a user is downloading a quite large file and Ubuntu-based centralized server.DOI : https://doi.org/10.26905/jeemecs.v2i1.2928]]>
<![CDATA[DESIGN AND MANUFACTURED OF LOG PERIODIC DIPOLE ARRAY (LPDA) ANTENNA AT 400 MHz - 800 MHz FREQUENCY AND ITS IMPLEMENTATION ON TELEVISION ANTENNA ]]>
<![CDATA[Gozal Nur Ramaditya]]>;
<![CDATA[Yulisdin Mukhlis]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 2 (2019): August 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i2.3126
<![CDATA[In this study the designed Log-Periodic Dipole Array antenna (LPDA) in the frequency range 400 MHz up to 800 MHz with 7dBi Gain. For the purpose of point to point communication required antenna that has directivity and for wideband telecommunication system required a wideband type antenna. At a gain of 7 dBi, the wider the frequency range then the total length of the Log-Periodic Dipole Array (LPDA) antenna structure is also longer. The design of the Log-Periodic Dipole Array (LPDA) antenna operates at λ / 2 in the 400 MHz - 800 MHz frequency range and has the ideal VSWR value (VSWR ≈ 1) so that the antenna and transmission line are matched. The advantages of the Log-Periodic Dipole Array (LPDA) antenna itself is to have a wide bandwidth and geometry value following a certain comparison.DOI : https://doi.org/10.26905/jeemecs.v2i2.3126]]>
<![CDATA[PORTABLE WIND TURBINES USES BLADE TYPE INVERSE TAPER ]]>
<![CDATA[Dwi Lestariningtiyas]]>;
<![CDATA[Basuki Winarno]]>;
<![CDATA[Yuli Prasetyo]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 2 (2019): August 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i2.3162
<![CDATA[The electrical energy is greatly needed in human’s life and even in the primary life of Indonesian. One of the renewable electrical energy resources is the wind energy which can be obtained by constructing a Wind Power Plant (PLTB, Pembangkit Listrik Tenaga Bayu). PLTB works by conversing the wind energy into electrical energy. PLTB that has been applied in Indonesia is using a permanent system with various kinds of blades. In this study, the Portable Wind Turbine is designed by using the inversed taper type blade. The Portable Wind Turbine consists of the inverse taper type wind turbine, DC dynamo, control circuit, and battery. The design begins with creating a simulation to design the turbine and control circuit. The turbine design uses Qblade and SolidWorks software for students, while the control circuit uses free version of Proteus software. The design result is a prototype which possesses a blade with 15cm and 8cm radius. The prototype testing is carried out by comparing two types of blade using various speed of artificial wind. The blade with 15cm length indicates a better result compared to the blade with 8cm. It produces a maximum voltage with the wind speed of 7m/s with 4,35volt and the current of 1,3 ampere.DOI : https://doi.org/10.26905/jeemecs.v2i2.3162]]>
<![CDATA[THE LOW ROTATION 1 PHASE AC GENERATOR USING MULTIPLE STATOR AND ROTOR METHOD IN THE FLOATING-HYDRO POWER PLANT ]]>
<![CDATA[Ahmad Afif Amrulloh]]>;
<![CDATA[Basuki Winarno]]>;
<![CDATA[Yuli Prasetyo]]>;
<![CDATA[Raden Jasa Kusumo Haryo]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 2 (2019): August 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i2.3205
<![CDATA[Abstract— Electrical energy is the most vital necessity in daily human’s life. The need of electrical energy has been continuously increasing along with the industry and society development. Indonesia is a tropical country with loads of energy sources which one of them is the new renewable energy sources. There are still many unexploited river flows that possess potentials as energy sources. The Floating-Hydro power plant is one of portable power plants harnessing the river flows as the energy source. In this study, the Low Rotation 1 Phase AC Generator Using Multiple Stator and Rotor Method in the Floating-Hydro Power Plant was designed. This generator consisted of several stators and rotors. The stator was strung together using the enamel wire. As in accordance to the design outcome, the number of stator windings was 364 per coil, the space between windings was 4cm, and the stator diameter was 25cm. Meanwhile, the rotor consisted of Neodymium (NdFeB) type permanent magnet which was going to be induced into the stator. Every rotor consisted of 10 pieces of permanent magnet with a space between magnets was 2cm. The experiment result, which was performed on the 1 phase axial generator using 2 stators and 3 rotors with loads in the form of 3 pieces of 35W 12VAC lamps, generated voltages of 2,1 VAC with currents of 0,03A at the low speed of 100rpm. Meanwhile, at the speed of 1200rpm, it generated voltages of 10,68VAC with currents of 0,23A. DOI : https://doi.org/10.26905/jeemecs.v2i2.3205]]>
<![CDATA[POTENTIAL OF 77,78 mW RED DIODE LASER FOR PHOTODYNAMIC ]]>
<![CDATA[Basitha Febrinda Hidayatulail]]>;
<![CDATA[Irfan Mujahidin]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 2 (2019): August 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i2.3254
<![CDATA[A laser is a light source that uses for any kinds of medical application. Diode Laser is one laser type using in the medical application such as Photodynamic Therapy and Photodynamic inactivation. Photodynamic Therapy is one of non-invasive therapy using for many therapies such as antimicrobial therapy, rejuvenating skin therapy, anti-aging skin therapy, etc. This therapy is using a light source with specific characteristics of wavelength in some case are using Light-sensitive molecules. This research aims to determine the potential of the diode laser for photodynamic therapy instrument. Diode Laser with wavelength value 660nm is Red Laser Diode that has main power output 79,4 mW. The application was using 1 cm clearance with the 30s of time exposure. The result showed that for Diode Laser (λ) 660nm using 7,8x10-2 W input power produce 77,78 mW output power; has operational temperature 53.56oC and light beam 4.2 mm2.DOI : https://doi.org/10.26905/jeemecs.v2i2.3254]]>
<![CDATA[2.4 GHz SQUARE RING PATCH WITH RING SLOT ANTENNA FOR SELF INJECTION LOCKED RADAR ]]>
<![CDATA[Irfan Mujahidin]]>;
<![CDATA[Basitha Febrinda Hidayatulail]]>;
<![CDATA[Putri Surya Arinda]]>
<![CDATA[ JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 2, No 2 (2019): August 2019 ]]>
Publisher : <![CDATA[Merdeka Malang University ]]>
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DOI: 10.26905/jeemecs.v2i2.3253
<![CDATA[Abstract: The radar network system requires high-cost frequency, the complex configuration component of the electromagnetic feeding network circuit to make four output antenna with the same power and different phase output specifically for SIL (Self Injection Locked) Radar, and inexpensive material, especially for the electromagnetic component. 2.4 GHz Square Ring Patch with Ring Slot Microstrip Antenna with four output that has the same power using power divider and 90-degree phase different output for SIL Radar. this is the novel shaped microstrip Antenna with the free frequency, more unassuming configuration, and inexpensive material at the 2.4 GHz for SIL Radar. This system is an important part component of SIL Radar that is package consists of a 2.4 GHz Microstrip antenna with the Square Ring Patch with Ring Slot, double power divider which is double input with quad output with the same power and directional coupler 90-degree phase difference with two input and two output. The Antenna has single band and narrow bandwidth with the frequency is 2.38 GHz until 2.43 GHz under -10dB S parameter and frequency resonance 2.4 GHz, the radiation pattern is directional and the gain is 8.37 dBi, The Power divider has S parameter 2 port output of one part under -20dB at 2.4 GHz and isolation above -4dB that is all good agreement. The 90-degree hybrid coupler has S35 of -35.95dB, S46 of 35.09, S53 of -3.47, and S64 of -3.39 that all is qualified good operation. And overall size of the proposed antenna system is 100 mm times 55.7 mm with FR4 (Phenolic White Paper) with a dielectric constant is 4.4 that has 50ohm.DOI : https://doi.org/10.26905/jeemecs.v2i2.3253]]>
