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31,377 Article Results

Implementation of Fuzzy-PD for Folding Machine Prototype Using LEGO EV3

10.12928/telkomnika.v16i4.7569
Wahyu S.; Institut Teknologi Adhi Tama Surabaya Pambudi , Titiek; Institut Teknologi Adhi Tama Surabaya Suheta
Folding machine prototype is a tool for folding clothes that used a LEGO Mindstorm EV3 and the movement of this LEGO will be controlled by using the proposed method.This research is using 2 kind of systems, first is (Proportional Integration Derrivative) and second is Fuzzy-PD. This system can improve the production efficiency especially in micro convection-based industry (UKM). This folding machine prototype has 3 folds connected to the EV3 Large Motors as actuators. PID and Fuzzy-PD control systems are used to control the position of the motor angle by reading the rotary encoder. Based on the test results with load condition at Kp=7,00; Ki=2.00; Kd=15.5,the PID control system has a rise time of 0.479s with settling time of 0.551s and overshoot value of 9,1%. While the result of Fuzzy-PD control shows the rise time is equal to 0.617s with settling time of 0.7s and overshoot value of 7.5%.
Volume: 16
Issue: 4
Page: 1625-1632
Publish at: 2018-08-01

Actuator Fault Decoupled Residual Generation on Lateral Moving Aircraft

10.12928/telkomnika.v16i4.9055
Samiadji; Universitas Gadjah Mada Herdjunanto , Adha; Universitas Gadjah Mada Cahyadi , Bobby Rian; Universitas Gadjah Mada Dewangga
Implementation of time-scheduled maintenance is not suitable if it is applied for systems with many varieties of heavy workload and harsh environment since on that condition components degrade earlier that those under normal condition. Therefore it has been shifted to condition-based maintenance (CBM). One important aspect, among others, toward implementation of CBM method is fault isolation. The problem investigated in this paper is related todecouple residual generation for actuator fault isolation of an aircraft on lateral movement. The proposed solution for that problem is to implement combination of transformation matrix and special filter. Transformation matrix is used to convert feature locations of actuator faults to signature vectors. Moreover, the signature vectors will be processed further by special filter to generate decoupled residuals. It is assumed that the actuator is the only fault when the aircraft is on lateral movement. The result showed that special filter and transformation matrix can be designed so that the residual of aileron actuator fault is decoupled from the residual of rudder actuator fault.
Volume: 16
Issue: 4
Page: 1886-1893
Publish at: 2018-08-01

An Integrated Cross Layer Design to Enhance the Quality of Service of Video Streaming in Mobile Adhoc Networks

10.11591/ijict.v7i2.pp57-62
N. Gomathi , M. Uvaneshwari
The intent of this paper is to put forth a novel technique for improvising the QoS of multimedia applications in by using Modified dynamic mapping algorithm and Multipath transport(MPT) and Multi Description Coding(MDC). The improvement is attained by applying the MDC at application layer along with UDPLite in transport layer and multipath at network layer and Modified dynamic mapping in MAC Layer.Thismethod attains an increase of 30.84% in Peak Signal to Noise Ratio (PSNR) and 18.57% decrease in delay in contrast to the conventional methods.
Volume: 7
Issue: 2
Page: 57-62
Publish at: 2018-08-01

Modeling and Simulation of Nine-Level Cascaded H-Bridge Multilevel Inverter

10.11591/ijeecs.v11.i2.pp696-703
A.A. Zulkefle , A.I.A. Rahman , M. Zainon , Z.A. Baharudin , Z. Zakaria , M.B. Farriz , S.A.A. Shukor , N.F. Johan , N. Saleh , M.A.M. Hanafiah
This paper analyzed a single phase nine level cascaded h-bridge multilevel inverter (CHMLI) topology in which requires lesser number of components and easier to control if compared to other methods. The inverter of different voltage levels (up to 9-Levels) are designed and simulated using MATLAB Simulink. A Level Shifted Multi-Carrier PWM control scheme is used to control the operation of the power switches for CHMLI topology. The results are compared in terms of THD.  The value of THD is found to be reduced as the number of voltage level of CHMLI is increased.
Volume: 11
Issue: 2
Page: 696-703
Publish at: 2018-08-01

Multi-Agent based MapReduce Model for Efficient Utilization of System Resources

10.11591/ijeecs.v11.i2.pp504-514
Heena Kousar , B.R. Prasad Babu
Recently with increased adoption of big data, Internet of Things and sensor technology by various organization for provisioning smart intelligent services for various application uses. Data processing on real-time social media and sensor data is been a key area of research in recent times and these data are massive and continuous. Smart application using sensor and social media data can be classified into three class: 1) online processing of streaming data; 2) online processing of historical data; and 3) hybrid processing of both. The existing model are designed considering stream or batch processing. For provisioning real-time processing MapReduce framework using Hadoop framework is considered by state-of-art technique for data inflow forecasting. However, the Hadoop based forecasting model are not efficient in fully utilizing system resource. Agent based MapReduce forecasting model is adopted by state-of-art technique to utilize system efficiently. However, they incurs high computation overhead, thus increase cost of computing cost. To overcome this work present an agent based Data Inflow Forecasting (DIF) model for both stream and non-stream (historical) data by using Multivariate Gaussian Mixture (MGM) model. This work present an Agent based MapReduce (AMR) framework to process data in real-time and utilize system resource efficiently. To provide scalability for processing social media and sensor data DIF-AMR model adopts cloud computing architecture. Experiment are conducted to evaluate performance of DIF-AMR of over existing model shows significant performance improvement in terms of computation time.
Volume: 11
Issue: 2
Page: 504-514
Publish at: 2018-08-01

Modelling Optical Waveguide Bends by the Method of Lines

10.12928/telkomnika.v16i4.5191
Ary; University al Azhar Indonesia Syahriar , Nabil Rayhan; Bandung Institute of Technology Syahriar , Jusman Syafiie; University al Azhar Indonesia Djamal
A rigorous analytical and semi analytical method of lines has been used to calculate the transverse-electric field attenuation coefficient of guided mode as it travels in waveguide bends structure. Both approaches then were compared to get a better understanding on how the attenuation behaves along single curve waveguides with constant radius of curvature. The Helmholtz Equation in polar coordinate was transformed into a curvalinier coordinate to simulate the waveguide bends using the method of line analysis. The simple absorption boundary conditions are used into the method of lines to demonstrate evanescent field of the guided mode nature as its travels in waveguide bends structures. The results show that a reasonable agreement between both theoretical approaches.
Volume: 16
Issue: 4
Page: 1490-1499
Publish at: 2018-08-01

A Review on Structured Scheme Representation on Data Security Application

10.11591/ijeecs.v11.i2.pp733-739
Siti Norussaadah Mohd Salleh , Roshidi Din , Nur Haryani Zakaria , Aida Mustapha
With the rapid development in the era of Internet and networking technology, there is always a requirement to improve the security systems, which secure the transmitted data over an unsecured channel. The needs to increase the level of security in transferring the data always become the critical issue. Therefore, data security is a significant area in covering the issue of security, which refers to protect the data from unwanted forces and prevent unauthorized access to a communication. This paper presents a review of structured-scheme representation for data security application. There are five structured-scheme types, which can be represented as dual-scheme, triple-scheme, quad-scheme, octal-scheme and hexa-scheme. These structured-scheme types are designed to improve and strengthen the security of data on the application.
Volume: 11
Issue: 2
Page: 733-739
Publish at: 2018-08-01

Efficiency of Wireless Power Transfer System with PWM Methode as Rectifier on Receiver

10.12928/telkomnika.v16i4.8046
Zuansah Rachmat; Mercubuana University Munggaran , Mudrik; Mercubuana University Alaydrus
One part of the wireless power transfer system is rectifier, where the energy which received by the receiver conditioned according to the device character. While devices with direct current as a wave form of electrical energy is commonly used. Conventional rectifier was using half wave or full wave circuit where uses diode circuit, capacitor and transformer as filter. The disadvantage of the system is reactive power and harmonization. We proposed the pulse width modulation because PWM could enhanced power factor value on an AC voltage source system with 50 Hz frequency. The main focus on which this study was based was to derive efficiency values from pulse width modulation utilization in the rectification process while the frequency work at 5 MHz and highest power at 54.48 Watt, and compare this reasearch with published research for similar systems. To achieve the objectives of this study then performed design and build system, measurement and analysis of the value of system efficiency. The results of the research obtained the highest value of efficiency at 81%.
Volume: 16
Issue: 4
Page: 1427-1434
Publish at: 2018-08-01

Development of Fall Risk Detector for Elderly

10.12928/telkomnika.v16i4.9066
Nor Aini; Universiti Teknologi Malaysia, Malaysia Zakaria , Nur Amalina; Universiti Teknologi Malaysia, Malaysia Rashid , Muhammad Amir; Universiti Teknologi Malaysia, Malaysia Asa’ari
In Malaysia, falls has become the most common injuries for elderly. Therefore, a wearable fall detector device is created to decrease the risk of serious injury among elderly. The device consists of an accelerometer (ADXL345) as a sensor, an Arduino Nano as a microcontroller, and a Global System for Mobile Communications (GSM) as a notifier. A group of 15 young people participated in performing several sets of different falls and ADL (daily life activities) to determine the ability of the device. The result shows a good functioning performance by 92.6% sensitivity to detect fall and 89.3% specificity in discriminate fall from daily life activity.
Volume: 16
Issue: 4
Page: 1577-1582
Publish at: 2018-08-01

Capacitive Sensing Algorithm for Elderly Activity Detection Scheme Indoor Environment

10.11591/ijeecs.v11.i2.pp515-521
Atika Arshad , Sheroz Khan , Kushsairy Abdul Kadir , Rumana Tasnim
The aim of this research is to assist elderlies in accomplishing their everyday tasks through facilitating their home atmosphere with sensors, actuators, and computational resources. A significant effort is needed to incorporate them to make them effective in daily life. Particularly, the tracking and detection of elderly people’s daily tasks, associated with the information of the user's location in the home environment signify the key pillars of this work. The detecting and tracking algorithm uses the sensory data to indicate an associated situation in order to allow elderly people with special requirements. Monitoring the elderly’s behaviour over a long period of time will allow prediction of their forthcoming alarming situation which allows the finding of the elderly’s behavioural deviations in their everyday routine. The proposed resolution has been methodically assessed in the laboratory.
Volume: 11
Issue: 2
Page: 515-521
Publish at: 2018-08-01

The Forecasting Technique Using SSA-SVM Applied to Foreign Tourist Arrivals to Bali

10.12928/telkomnika.v16i4.7293
Yosep Oktavianus; Padjadjaran University Sitohang , Yudhie; Padjadjaran University Andriyana , Anna; Padjadjaran University Chadidjah
In order to achieve a targeted number of foreign tourist arrivals set by the Indonesian government in 2017, we need to predict the number of foreign tourist arrivals. As a major tourist destination in Indonesia, Bali plays an important role in determining the target. According to the characteristic of the tourist arrivals data, one shows that we need a more flexible forecasting technique. In this case we propose to use a Support Vector Machine (SVM) technique. Furthermore, the effects of noise components have to be filtered. Singular Spectrum Analysis (SSA) plays an important role in filtering such noise. Therefore, the combination of these two methods (SSA-SVM) will be used to predict the number of foreign tourist arrivals to Bali in 2017. The performance of SSA-SVM is evaluated via simulation studies and applied to tourist arrivals data in Bali. As the results, SSA-SVM shows better performances compare to other methods.
Volume: 16
Issue: 4
Page: 1679-1687
Publish at: 2018-08-01

Analysing Signal Strength and Connection Speed in Cloud Networks for Enterprise Business Intelligence

10.12928/telkomnika.v16i4.8454
Gananda; Bogor Agricultural University Hayardisi , Kudang Boro; Bogor Agricultural University Seminar , Arief; Bogor Agricultural University Ramadhan
Signal strength and speed connection data which are collected and available in a company have not been optimally and beneficially processed and stored for more added value business purposes. Therefore, the collected data need to be utilized in more strategic way for business intelligent in the company that enables management to conduct better and smarter decision making. This research is aimed to develop a business intelligence system based on cloud computing platform which is more flexible and manageable in terms of cost and resources. The developed system adopts the three tier architectures of data warehouse that provides data extraction, transform, and load (ETL) functions and the creation of dimensional models and visualization in dashboard forms. Business intelligence solutions have been created based on cloud computing using Microsoft Azure SQL Database as database storage of data warehouse and Power BI as a dimensional model and dashboard visualization. The developed system prototype has been implemented and tested for its functionalities and capabilities in a web platform.
Volume: 16
Issue: 4
Page: 1779-1784
Publish at: 2018-08-01

Microcontroller-based Control and Data Acquisition System for a Grid-connected Renewable Energy System

10.12928/telkomnika.v16i4.9042
Kevin D.; Malayan Colleges Laguna Dugay , Adam Z.; Malayan Colleges Laguna Luisaga , Jomille Angelo Carlo O.; Malayan Colleges Laguna Bancud
There has been a significant increase in the exploitation of renewable energy systems. To be able to efficiently utilize grid - connected renewable energy sources, there must be a reliable control and monitoring system. In building a control and monitoring system for this system, a power analyzer connected to a microcontroller was used. The microcontroller was linked to touchscreen display where a graphical user interface (GUI) was programmed to able to display and log the data recovered. Relays were used to reconfigure the system by shifting the load’s source of energy between the grid and renewable energy system. The energy generated by the renewable energy system may be delivered to the load or be fed to the grid as needed. This operation will be done through either an external device or through a computer which was built to manually operate the control system and view the status of the system as determined by parameters such as cost and energy consumption. This system provided residential buildings with their own renewable energy system with a simple yet reliable control and monitoring system. The system was able to accumulate accurate and real time data. It also provided a continuous supply and switching application simultaneously.
Volume: 16
Issue: 4
Page: 1481-1489
Publish at: 2018-08-01

Street Lighting System for Smart Cities Using Micro-Controllers

10.11591/ijeecs.v11.i2.pp567-576
Aaquib Parkar , Prashant Kumar Soori
The main goal is to simulate different configurations of street lighting system using DIALux and optimize the energy consumption. Data of the existing road in the United Arab Emirates is considered for simulation. Simulation results are validated by building a hardware model. This is accomplished by using LED modules instead of traditional HPS bulbs which is connected to an Arduino to control different sensors. Photo resistors are used to automatically switch the lights ON or OFF depending on the light intensity. Ultrasonic sensors are used to detect motion of cars and pedestrians in order to switch 50% of the lights off if no motion is detected. The recorded data is monitored by a Raspberry Pi which acting as a monitoring device. Practical measurements were conducted at different points on the road selected and are compared with the simulation results.The main goal is to simulate different configurations of street lighting system using DIALux and optimize the energy consumption. Data of the existing road in the United Arab Emirates is considered for simulation. Simulation results are validated by building a hardware model. This is accomplished by using LED modules instead of traditional HPS bulbs which is connected to an Arduino to control different sensors. Photo resistors are used to automatically switch the lights ON or OFF depending on the light intensity. Ultrasonic sensors are used to detect motion of cars and pedestrians in order to switch 50% of the lights off if no motion is detected. The recorded data is monitored by a Raspberry Pi which acting as a monitoring device. Practical measurements were conducted at different points on the road selected and are compared with the simulation results.
Volume: 11
Issue: 2
Page: 567-576
Publish at: 2018-08-01

Practical Application of In-door Tested Scaled Models on Real Building structures

10.11591/ijeecs.v11.i2.pp593-598
Irshad Ullah , MNR Baharom , H. Ahmad , H.M. Luqman , Zainab Zainal
Lightning indoor testing got a very low attention of the researchers. Although lightning is impossible to create inside the laboratory however it can be presented using high voltage impulse. High voltage impulse was generated in this paper which presents the actual lightning. Selected building structures were tested under the high voltage condition. This idea was implemented practically by applying it on different real building structures. Different building with different roof tops were observed practically and it was found that this research work has a good agreement of the lightning strike points observe during the indoor activities in high voltage lab and out door activity during the field study.
Volume: 11
Issue: 2
Page: 593-598
Publish at: 2018-08-01
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