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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 9,174 Documents
 470   471   472   473   474 
Experiment System of Motorcycle Impact Injury Using Electric Motor Traction Haibin CHEN; Jianjin HANG; Liying ZHANG; Xin NING; Xiaoyan LI; Zhiyong YIN; Guangyu YANG; Zhengguo WANG
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 4: April 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

A unique motor drive unit (MDU) and motorcycle crash simulation unit (MCSU) were developed to establish a short-track and high-accuracy experiment system of motorcycle impact injury. The control hardware of the MDU consists of a “two DC motors” system and a “two drums, closed-loop, friction transmission” system, and the control software of the MDU has a novel “carriage acceleration profile control program” which was specially set up to prevent the cusp-like pulse and oscillation phenomenon in the acceleration stage close to the uniform velocity. The unique motorcycle sled and energy absorber constitute a novel MCSU. Research results show that: (1)Using a unique generation algorithm of the carriage acceleration- and velocity-time curve and unique manufacturing techniques of hardware components, the apparatus presented in this paper has a potential to become the first short-track experiment system of motorcycle impact injury. (2)Due to a high weight capacity with the ability to propel whole vehicles, the MDU can be used in the full motorcycle/full vehicle crash tests or vehicle component sled impact tests. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2429
An Elastic Data Intensive Computing Cluster on Cloud Zhaolei Duan
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 10: October 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

In order to meet the increasing processing demand of data intensive computing, an elastic data intensive computing cluster EDICC is presented. Using local resource and cloud resource at the same time，EDICC has high availability and reliability, especially when flash crowd happens. EDICC could acquire resource from cloud when system is overloaded and release unnecessary cloud resource after load down. Experimental results show, comparing with traditional data intensive computing system, EDICC could achieve outstanding performance and higher resource efficiency.http://dx.doi.org/10.11591/telkomnika.v12i10.5433 
Testbed versus simulation approach on RF communication with AAβ asymmetric encryption scheme on internet of things devices Syed Farid Syed Adnan; Mohd Anuar Mat Isa; Habibah Hashim
Indonesian Journal of Electrical Engineering and Computer Science Vol 14, No 1: April 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v14.i1.pp353-359

Abstract

The revolution of the Internet of Things (IoT) has given a better way of monitoring things including anything that could gather data and share the information over the internet. Most of the connected things are using Device to Device (D2D) connection to make it available on the internet such as client to a broker or client to a server. However, when IoT devices such as embedded devices and sensors that are connected to the internet, it becomes an open path for attackers to acquire the data and data vulnerably will become an issue. Thus, data integrity might become an issue, or the attackers could temper the data and could cause a disastrous domino effect to the interconnected IoT devices. Therefore, the data security collected from the sensors is substantial even though it could be a single character transmitted. However, IoT sensors are low powered devices in term of CPU, storage, memory and batteries. Securing the devices such as integrating the encryption algorithm computations might give overhead to the sensors and draining the batteries even faster than it is predicted. Alternatively, this paper attempts to explore the capabilities of the asymmetric scheme on resource constrained devices for its communications. Thus, this paper presents an RF communication analysis of a low consumption asymmetric encryption, the AAβ (AA-Beta) especially on encryption section that is likely to be feasible on IoT devices to preserve the data integrity. The design of RF transmission has been considered to suit the RF transceiver capability to prevent data losses and error from occurring. The result shows that 2.35 times of RF transmits runtime increased compared to RF simulation runtime. Meanwhile, at the receiver side, the runtime increases 60% compared to the simulation.
The Blanket Fractal Dimension Based on the Directed Pattern Plate Wang Yan; Cui Zeyan
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 9: September 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

Blanket fractal dimension is a kind of fractal dimension,which is usually used in image processing , and doesn't have a direction. This paper will propose to introduce the direction of pixel into the calculation of the Blanket fractal dimension, and use it to detect the edge of image. This algorithm will calculate the new blanket fractal dimension of the image at first, and then detect the edge with the method of the edge segmentation algorithm based on the traditional Blanket fractal dimension. After this, it will eliminate a part of pixels based on the IFS and Collage Theorem. Experiments will show that this algorithm is able to overcome the issue of double-border in the edge segmentation algorithm base on traditional Blanket fractal dimension, and extract the precision edges with the different directions. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3258  
Optimal Design of PID Controller for Load Frequency Control using Harmony Search Algorithm D. K. Sambariya; Seema Shrangi
Indonesian Journal of Electrical Engineering and Computer Science Vol 5, No 1: January 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v5.i1.pp19-32

Abstract

This paper deals with soft computing technique, used for tuning PID controller. Controller tuned with a harmony search algorithm is used for controlling the frequency and Tie-line power responses of a non reheat two area power system. Step load perturbation has been given in both areas simultaneously. The dynamic results obtained by the proposed controller are compared with PID controller of recent published paper. The performance of the controllers is simulated using MATLAB/Simulation software. The results of tuned PID are compared with conventional controller on the basis of settling-time, peak over-shoot and peak under-shoot. Proposed PID gives better results than the conventional controller. The comparative resultsalso tabulated as a comparative performance.
Insights extraction on cross-cultural interaction through astronomy online labs using data analytics M. Bakri; Norhaslinda Kamaruddin; M. Hamiz; P. Marlia; A. H. S. Nurhasmiza; Z. Othman; N. A. S. Nilam
Indonesian Journal of Electrical Engineering and Computer Science Vol 16, No 1: October 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v16.i1.pp508-515

Abstract

Dialogical inquiry on astrology offers the participants to gain not only the intellectual and technological knowledge on the subject matter but also the social benefit of the interaction. Different cultures and values may pose as a challenge for adaptation when the participants start to collaborate in order to complete the group work. Hence, multiple sessions of cross-cultural interaction through Astronomy Online Labs had been conducted to give the participants a standardized platform to discuss and communicate. However, it is imperative to observe the content and frequency of the interaction to ensure both parties (Local and Non-local) benefited from such interaction. The interaction had been recorded and analysed to give us some insights for the improvement of the future participants’ engagement. The visualization techniques such as word cloud, word forest, timeline as well as Venn diagram approaches had been used and it is observed that the participants are actively communicating with the Non-local slightly dominating the session. It is hoped that the analysis tool can be embedded in the platform that it can provide dynamic analysis on the go while interaction happens so the moderator can steer the interaction to the intended topic.
Input-Current and Load Voltage Sharing in Input-Parallel Output-Series Connected Boost Half Bridge DC-DC Converter Using Stable Control Scheme Amir Mahmood Soomro; Shahnawaz Farhan Khahro; Shahnawaz Talpur; Liao Xiaozhong; Farhan Manzoor
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 5: May 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

This paper explores a configuration for boost half bridge DC-DC converters, connected in parallel at the input and series at the output, such that the converters share the input current and load voltage equally. A stable control scheme has been developed to achieve this objective. In order to verify the effectiveness and stability of control scheme, input-parallel output-series (IPOS) connected boost half bridge (BHB) DC-DC Converter has been simulated for the different load conditions such as for fixed load, half load and continuously varying load. The results are found to be satisfactory at each load condition and validate the proposed converter structure. DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.4188
Dynamic Voltage Restorer for Sag and Swell Issues in Power System Lakshmi Lakshmi Kumari; Uma Vani Uma Vani
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 3: September 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i3.pp1243-1250

Abstract

This paper presents the application of dynamic voltage restorers (DVR) on power distribution Systems for mitigation of voltage sags/swells at critical loads. DVR is one of the compensating types of custom power devices. The power quality is affected mainly due to the sensitive loads which results in voltage sag and voltage swells. It is necessary to investigate the suitable methods for mitigation of voltage sags. Sensitivity is the main cause of the above power quality problems and it cannot be eliminated completely as it has many other operating properties. So the next possible solution is to correct the problems caused by the sensitive equipments connected to the faulty loads. The occurrence of sag and swell varies with equipment, environment, process operations, desired control schemes etc. From the wide range of mitigation methods, the selected one has to be observed for the effect on the characteristics. These problems can be mitigated with voltage injection method using custom power device, Dynamic Voltage Restorer (DVR). In this paper we design a Dynamic Voltage Restorer (DVR) which is utilized for power quality improvement. The main power quality problems like voltage sag and swell are studied in this paper. The device used to phase out voltage sags and a swell in the distribution lines is the Dynamic Voltage Restorer (DVR). The Dynamic Voltage Restorer is a special type of power device used for providing consistent and reliable supply power to the load devices. Dynamic Voltage Restorer uses a vector control strategy for mitigating power quality problems by automatically detecting and injecting the voltage components through an injection transformer. Here comes the importance of soft computing techniques like PI controller. The system will be able to correct repeated occurrences of the power quality problems. 
Home appliances recommendation system based on weather information using combined modified k-means and elbow algorithms Amer Jaafar, Basim; Talib Gaata, Methaq; Nsaif Jasim, Mahdi
Indonesian Journal of Electrical Engineering and Computer Science Vol 19, No 3: September 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v19.i3.pp1635-1642

Abstract

The recommendation system is an intelligent system gives recommendations to users to discover the best interesting items. The purpose of this proposed recommendation system is to develop a system to find the best electrical devices according to weather conditions and user preferences. The proposed solution relies on the characteristics of electrical appliances and their suitability to weather conditions in any city. The proposed solution is the first recommendation system combines devices properties, weather conditions, and user preferences using a new combination of algorithms. The clustering algorithms are the most applicable in the field of recommendation system. The proposed solution relies on a combination of Elbow method, pro­­posed modified K-means and Silhouette algorithm to find the best number of clusters before starting the clustering process. Then calculate the weights for each cluster and compare them with the weather weights to find the required clusters sorted from the near to far according to a computed threshold. The empirical results showed that the proposed solution demonstrated a 94% accuracy to match the characteristics of the recommended devices with the climatic characteristics of the region and user preferences. The accuracy is measured using Silhouette algorithm.
Economic Growth and Coal Consumption in China Peng Tian; Herui Cui
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 3: March 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

In this paper, we used the methods of cointegration and granger causality estimation to test the relationship between China’s coal consumption and real GDP based on the data of 1978~2010, the results show that the real GDP and coal consumption have no granger causality, and do not have a long run cointegration, which is different from the existing discovery. Because of following reasons, first of all, this paper selected on the basis of the existing economic data since reform and opening up, and for the first time increased the time span to more than 30 years and the inspection of the data generation process (DGP) to ensure that there is no structural break point; secondary, with the deepening of China's reform and opening up, economic growth dependence on coal consumption is not stable, so the GDP and coal consumption does not exist the long-term cointegration; thirdly, hidden problem of inefficient use of coal in the  rapid economic growth, resulting in economic growth and coal consumption  causality is not obvious. Finally, policy recommendations are offered according to the analysis of this study. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2226

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