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INDONESIA
Indonesian Journal of Electrical Engineering and Computer Science
Published by Institute of Advanced Engineering and Science
ISSN : 25024752     EISSN : 25024760     DOI : -
Core Subject :
Arjuna Subject : -
Articles 9,199 Documents
 115   116   117   118   119 
Performance analysis and experimental study on Flat Optical Comb Generation Haining Li; Yingxiong Song; Yingchun Li
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 1: January 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

The performance of the optical frequency comb generation based on the re-circulating frequency shifter has been analyzed and demonstrated in this paper. We have theoretically analyzed the condition for flatness of the optical frequency comb and the relative intensity noise influence. We find out the influence to the flatness of optical comb owing to amplifier relative intensity noise and modulator relative factors imperfect, such as input RF signals amplitude and phase deviation and modulator defect owing to manufacture for the first time. Moreover, to verify the theoretical analysis, a 16 comb lines and spacing 12.5 GHz RFS generation system have also been carried out, and the results are in good agreement with the theoretical analysis results. DOI: http://dx.doi.org/10.11591/telkomnika.v11i1.1867
A Modified Particle Swarm Optimization Algorithm Jie He; Hui Guo
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 10: October 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

In optimizing the particle swarm optimization (PSO) that inevitable existence problem of prematurity and the local convergence, this paper base on this aspects is put forward a kind of modified particle swarm optimization algorithm, take the gradient descent method (BP algorithm) as a particle swarm operator embedded in particle swarm algorithm, and at the same time use to attenuation wall (Damping) approach to make fly off the search area of the particles of size remain unchanged and avoid the local optimal solution, with three input XOR problem to testing the improvement of the particle swarm optimization algorithm and the results showed that the improved algorithm not only increase global optimization ability, but also avoid the prematurity, convergence problem. DOI: http://dx.doi.org/10.11591/telkomnika.v11i10.2947 
Design and implementation of embedded auto car parking system using FPGA for emergency conditions Khor Jing Yong; Muataz H. Salih
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 3: March 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v13.i3.pp876-883

Abstract

An automatic car parking system using FPGA based on emergency conditions was proposed to detect the driver’s condition and perform specific tasks such as warn the drivers and automatic parking depends on the behavior of the driver. Long journey driving on highway will lead loss of concentration of driver quickly and also cause the driver doze off. Based on statistics, driver tends to fall asleep more on high-speed, long, boring highway. Most crashes occur between 4.00a.m-6.00a.m and midnight 12.00a.m till 2.00a.m. Besides, heart attack during driving will also harm to other road users. The risk of accident will increase due to these conditions. In this paper, automatic car parking system using FPGA based on emergency conditions was proposed to detect the driver’s condition and perform specific tasks such as warn the drivers and automatic parking depends on the behavior of the driver. At the same times, this system can avoid all the obstacles and cars on the road from time to time. Input data management unit was designed as control unit for input data sensors of input and output control. Main processing was designed as speed controller and also the steering controller. Speed controller used to control the speed of vehicle while driving on the road by detecting the obstacles. Steering controller was designed to control automatic car parking and also assisted with sensors around the vehicles. Sensors were tested with many materials so that the system can flexible with any conditions. The total of 1083 logic elements and 676 registers being used in this project and up to 1.6GHz as operating frequency. The complete design is able to avoid obstacles surrounding of host vehicles and parked at a safe area automatically after heart attack of driver detected. Then, GSM send GPS coordination to hospital.
Analysis of Regulated Kinase Signal Network through Feedback Loops in Extra-Cellular Signal C. Periyasamy Periyasamy
Indonesian Journal of Electrical Engineering and Computer Science Vol 8, No 2: November 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v8.i2.pp549-551

Abstract

Signal network assumes a vital part in directing the principal cell capacities, for example, cell expansion, survival, separation and motility. Improvement and investigation of scientific model can help us gain a profound comprehension of the unpredictable conduct of ERK flag transduction organizes. This paper exhibits a computational model that offers an incorporated quantitative and dynamic reproduction of ERK flag transduction arranges, actuated by epidermal development figure. The mathematic demonstrate contains the enactment energy of the pathway, a huge number of input circles and association of platform proteins. The model gives knowledge into flag reaction connections between the authoritative of EGF to its receptor at the phone surface and actuation of downstream proteins in the flagging course. The diverse impact of positive and negative input circles of the ERK flag transduction pathway were for the most part examined, showing that criticism circles were the primary affecting variable to the swaying of ERK flag transduction pathway. The forecasts of this wavering of ERK enactment concur well with the writing. It can prompt flag floods of the downstream substrates and instigate relating natural practices.
Optimal operation management of grid-connected microgrids under uncertainty Surender Reddy Salkuti
Indonesian Journal of Electrical Engineering and Computer Science Vol 16, No 3: December 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v16.i3.pp1163-1170

Abstract

This paper proposes a new optimal operation of Microgrids (MGs) in a distribution system with wind energy generators (WEGs), solar photovoltaic (PV) energy systems, battery energy storage (BES) systems, electric vehicles (EVs) and demand response (DR). To reduce the fluctuations of wind, solar PV powers and load demands, the BES systems and DR are utilized in the proposed hybrid system. The detailed modeling of WEGs, solar PV units, load demands, BES systems and EVs has been presented in this paper. The objective considered here is the minimization of total operating cost of microgrid, and it is formulated by considering the cost of power exchange between the main power grid and microgrid, cost of wind and solar PV energy systems, cost of BES systems, EVs and the cost due to the DR in the system. Simulations are performed on a test microgrid, and they are implemented using GAMS software. Various case studies are performed with and without considering the proposed hybrid system.
Research on Electrical Energy Consumption Efficiency Based on GM-DEA Mei Liu
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 8: August 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i8.pp5801-5806

Abstract

In today's environment which emphasis on energy efficiency, predicting the trend of electrical energy consumption efficiency, and researching the efficient operation model of power industry has practical significance. By establishing GM-DEA method system, we use GM model to predict four inputs and output indicators in 2011 and 2012 in Beijing first, and then use DEA to give predicting years a reasonable analysis for the efficiency of energy consumption. The result shows that efficiency of electrical energy consumption in Beijing is gradually increasing, GM-DEA model can analyze the trend of the efficiency effectively in advance, and it provides a scientific basis for the rapid development of power industry.
Research on Surface Mounting Technology of Micromechanical Silicon Resonant Accelerometer Libin Huang; Yang Gao
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 5: May 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

Surface mounting technology is a key process in MEMS packaging. The finite element model of package structures was established in this paper according to the designed micromechanical silicon resonant accelerometer. The effects of package substrate materials, adhesive material characteristics, uneven adhesive thickness, and adhesive defects on the micromechanical silicon resonant accelerometer were analyzed with ANSYS software. Results showed that the package substrate material strongly affected the resonance frequency of the resonator after the application of surface mounting technology. The Young’s modulus and thermal expansion coefficient of adhesives were found to be important factors that affect chip thermal stress and warpage. Uneven adhesive thickness and adhesive defects also affect the resonance frequency of the resonator. DOI: http://dx.doi.org/10.11591/telkomnika.v11i5.2475
Algorithm to Convert Signal Interpreted Petri Net Models to Programmable Logic Controller Ladder Logic Diagram Models Z. Aspar; Nasir Shaikh-Husin; M. Khalil-Hani
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 3: June 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v10.i3.pp905-916

Abstract

Signal Interpreted Petri Nets (SIPN) modeling has been proposed as an alternative to Ladder Logic Diagram (LLD) modeling for programming complex programmable logic controllers (PLCs) due to its high level of abstraction and functionalities. This paper proposes an algorithm to efficiently convert existing SIPN models to their LLD models equivalences. In order to automate and speed up the conversion process, matrix calculation approach is used. A complex SIPN model was used to show that existing conversion technique must be expanded in order to cater for a more complex SIPN models.
An Image Processing Method to Convert RGB Image into Binary Ratri Dwi Atmaja; Muhammad Ary Murti; Junartho Halomoan; Fiky Yosef Suratman
Indonesian Journal of Electrical Engineering and Computer Science Vol 3, No 2: August 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v3.i2.pp377-382

Abstract

It is important in image processing to extract objects from their background into binary image. Binary image is used as input to feature extraction process and have an important role in generating unique feature to distinguish several classes in pattern recognition. This paper propose an image processing algorithm to obtain a binary image from RGB. The results showed that the binary image of the proposed algorithm contained the desired object.
Modeling of Magnetizing Inrush and Internal Faults for Three-phase Transformers Mohammad Bakhshipour; Farhad Namdari; Mohammad Sedaghat
Indonesian Journal of Electrical Engineering and Computer Science Vol 3, No 1: July 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v3.i1.pp26-37

Abstract

Among the most noticeable root causes of improper performance in power transformers, internal short circuit faults can be noted and if not quickly be identified and addressed in the accepted time interval, irrecoverable damages such as interruption or even collapse of the network connected to the power transformer would happen. In this contribution, three-phase transformer behaviors under magnetizing inrush, internal short circuit condition and their current values determination have been surveyed using electromagnetic coupling model approach and structural finite element method. Utilizing the definition of transformer in the form of multi-coil and their electromagnetic and electric couple, a three dimensional geometric model of transformer is developed which includes nonlinear characteristics of the transformer, different states of normal and under internal short circuit occurrence and the moment of magnetizing inrush creation are investigated. The comparison between obtained results of presented model simulation with the consequences of practical studies on a typical three phase transformer reveals that the proposed model has a reliable accuracy in detection and modelling the transformer behavior in normal conditions, magnetizing inrush and different types of internal faults. The proposed approach represents an accurate model of a three-phase transformer for protection aims.

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