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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
 168   169   170   171   172 
Slots and Notches Loaded Microstrip Patch Antenna for Wireless Communication Ashish Singh; Kamakshi Kamakshi; Mohd. Aneesh; J.A. Ansari
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 3: March 2015
Publisher : Institute of Advanced Engineering and Science

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Abstract

In this article, the theoretical investigations are carried out on slots and notches loaded microstrip patch antenna for dual-band operations. The antenna parameters are calculated such as return loss, VSWR and radiation pattern. It is observed that antenna resonates at three distinct modes of frequencies of 1.490/1.953/2.941 GHz. The characteristics behaviors of the proposed antenna are compared with other coaxial fed microstrip patch antennas. The bandwidth of the proposed antenna at modes TM01 is 2.01 %( simulated) and 3.42 % (theoretical), TM02 is 1.10 %( simulated) and 3.81 % (theoretical) and TM03 is   1.01 % (simulated) and 4.80 % (theoretical). The theoretical results are compared with IE3D simulation results as well as reported experimental results and they are in close agreement. DOI:  http://dx.doi.org/10.11591/telkomnika.v13i3.7282 
Comparison of Swarm Intelligence Algorithms for High Dimensional Optimization Problem Samar Bashath; Amelia Ritahani Ismail
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 1: July 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i1.pp300-307

Abstract

High dimensional optimization considers being one of the most challenges that face the algorithms for finding an optimal solution for real-world problems. These problems have been appeared in diverse practical fields including business and industries. Within a huge number of algorithms, selecting one algorithm among others for solving the high dimensional optimization problem is not an easily accomplished task. This paper presents a comprehensive study of two swarm intelligence based algorithms: 1-particle swarm optimization (PSO), 2-cuckoo search (CS).The two algorithms are analyzed and compared for problems consisting of high dimensions in respect of solution accuracy, and runtime performance by various classes of benchmark functions. 
OperativeCriticalPointBug algorithm-local path planning of mobile robot avoiding obstacles Subir Kumar Das; Ajoy Kumar Dutta; Subir Kumar Debnath
Indonesian Journal of Electrical Engineering and Computer Science Vol 18, No 3: June 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v18.i3.pp1646-1656

Abstract

For Autonomous Mobile Robot one of the biggest and interesting issues is path planning. An autonomous mobile robot should be able determine its own path to reach destination. This paper offers a new algorithm for mobile robot to plan a path in local environments with stationary as well as moving obstacles. For movable robots’ path planning OperativeCriticalPointBug (OCPB) algorithm, is a new Bug algorithm. This algorithm is carried out by the robot throughout the movement from source to goal, hence allowing the robot to rectify its way if a new obstacle comes into the route or any existing obstacle changes its route. According as, not only the robot tries to avoid clash with other obstacle but also tries a series of run time adjustment in its way to produce roughly a best possible path. During journey the robot is believed to be capable to act in an unknown location by acquiring information perceived locally. Using this algorithm the robot can avoid obstacle by considering its own as well as the obstacle’s dimension. The obstacle may be static or dynamic. The algorithm belongs to bug family.
Based on Fuzzy Hybrid Inverter Technology Solar Energy Application Research Huang Zhiwu; Wang Shuxia
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 4: April 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

The emergence of solar air conditioning, not only reduces energy consumption of the traditional air conditioning, but also decreases environmental pollution. However, the current market applications of solar air conditioning is not widespread, largely attributed to its internal control strategy has yet to be perfected. In order to achieve energy-efficient scheduling of solar air conditioning in the process of cooling, Firstly, the fuzzy control principle is introduced into the control procedure to solve the control threshold defined problem, the dynamic parameters of the air conditioner are adjusted dynamically to achieve the optimal  balance between multiple operating frequencies and the energy-related parameters at the same time. Then, the finite states machine segmentation techniques is taken in advantage to make that solar energy stay in an optimal status in a finite number of states given at any time. Finally, the Kalman frequency stabilization technology is used to ensure the system operating in the most stable state sustainably. Experimental results show the energy efficiency and performance of the system are improved obviously. Energy consumption per unit of time has decreased by 7%, and the latency of the system meets the applicability requirements. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4248
Induction Motor Characteristics Study using Laboratory Instrument Engineering Workbench E. Ramprasath; P. Manojkumar; P. Veena
Indonesian Journal of Electrical Engineering and Computer Science Vol 15, No 1: July 2015
Publisher : Institute of Advanced Engineering and Science

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Abstract

Induction motor characteristics are complex to study, so in order to simplify its complexity modelling of induction motor will be useful. Proposed paper dealt with the simulation of induction motor based on the mathematical expression using the graphical user interface software. Laboratory Virtual Instrument Engineering Workbench (LabVIEW) software is used for modelling the induction motor and helps in analyzing the performance characteristics of a machine. After the invention of special electrical machine the research in induction motor starts to decreases but it is the widely used motor in industries. The study about induction motor characteristics became complex after the incorporation of power electronic switches such as thyristor, diodes, GTO, and MOSFET. In duction motor characteristics can be studied and modelled with the help of numerous software’s such as Finite Element Analysis and Laboratory Virtual Instrument Engineering Workbench. DOI: http://dx.doi.org/10.11591/telkomnika.v15i1.8004 
Study on Knowledge -based Intelligent Fault Diagnosis of Hydraulic System Xuexia Liu
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 8: December 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

A general framework of hydraulic fault diagnosis system was studied. It consisted of equipment knowledge bases, real-time databases, fusion reasoning module, knowledge acquisition module and so on. A tree-structure model of fault knowledge was established. Fault nodes knowledge was encapsulated by object-oriented technique. Complete knowledge bases were made including fault bases and diagnosis bases. It could describe the fault positions, the structure of fault, cause-symptom relationships, diagnosis principles and other knowledge. Taking the fault of left and right lifting oil cylinder out of sync for example, the diagnostic results show that the methods were effective. DOI: http://dx.doi.org/10.11591/telkomnika.v10i8.1637
Fuzzy Keyword Search with Safe Index over Encrypted Cloud Computing Lixi Liu; Chi Zhang; Shaowen Yao; Shipu Wang; Wei Zhou
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

As cloud computing becomes more and more utilized, sensitive data are being stored in cloud central servers. To ensure privacy, these data are usually encrypted before uploading, which makes searching complicated. In this paper we propose architecture of fuzzy keyword search with safe index. Bloom filter is used to build safe index which increases the searching effectiveness on a large dataset. The size of index is fixed so that the space efficiency is promoted. The experiment result shows that our searching scheme is effective and can be adapted to large encrypted file system.  DOI: http://dx.doi.org/10.11591/telkomnika.v11i10.3419
Optimal Energy Harvesting Scheme for Power Beacon-Assisted Wireless-Powered Networks Dinh-Thuan Do
Indonesian Journal of Electrical Engineering and Computer Science Vol 7, No 3: September 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v7.i3.pp802-808

Abstract

In this paper, we consider one-way  relay with energy harvesting system based on power beacon (PB), in which the relay node harvests transmitted power from the PB station to forward signals to destination. We also analyse the relay network model with amplify-and-forward (AF) protocol for information cooperation and Power Splitting-based Relaying (PSR) protocol for power transfer. In particular, the outage probability and optimal energy harvesting (EH) power splitting fraction of novel scheme in are presented. We obtain analytical closed-form expression of  optimal energy harvesting (EH) power splitting fraction to minimize the outage probability of system. Using numerical and analytical simulations, the performances of different cases are presented and discussed.
A novel configuration of THz photonic transmitter Ibtissame Moumane; Jamal Zbitou; M. Latrach; A. Errkik; O. Chakkor
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 1: January 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v13.i1.pp258-264

Abstract

In this paper we present a new design of a photonic transmitter based on multi-layers substrate GaAs and using for generation of THz waves. The proposed circuit is composed from a photodetector (PD) “which converts the light to the electrical signal”, THz Antenna, low-pass filter and DC probe. Firstly we have optimized the THz antenna using an EM solver which is Momentum integrated in ADS “Advanced Design System”.Then we have optimized the low pass filter which plays the role of inductance that is an RF choke permiting to separate the RF signal from the DC one. Finally, we have associated the different components, add the DC probe and simulate the whole proposed system. The dimensions of the final circuit are 400.317x167.16 UM2 . The obtain results permit to validate the final circuit at THz and make it suitable for THz applications.
Developing a wireless real-time automated home approach utilizing NI MyRIO microcontroller board and LabVIEW platform Ahmad A. Alahmadi
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.pp1273-1278

Abstract

In this paper, a design process and a hardware implementation for a wireless real-time home automation system approach based on NI MyRIO microcontroller board and LabVIEW platform has been developed. The proposed automated system has two hardware elements: the first one is a personal computer as a system main server hosting the designed LabVIEW platform and the second element is a NI MyRIO microcontroller board for managing the operating between the appliances and the sensors. The appliances can be automatically monitored, controlled, and accessed in response to the signals from the related sensors or manually by the system end-user through smart phone based on Wi-Fi and cloud computing technology. To approve the reliability of the proposed automated system, a hardware realization for three appliances: temperature management, light energy saving, and biometric security system of face recognition with fingerprint check has been introduced. The proposed system has a simple structure, economically cost effective and flexible scaling up for a proper automated home future.

Page 170 of 920 | Total Record : 9199

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