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29,325 Article Results

A High Frequency Converter for EV Application

10.11591/ijeecs.v9.i1.pp5-11
G. Kannan
An electrical vehicle (EV) is advancing as alternative power trains for green transportation. the DC–DC converter for auxiliary power supply of electric loads .In this paper presented  a new topologyof  high frequency converter for electric vehicle was proposed,This converter has to be capable of handling the energy transfer from the 28V DC bus and the 550 high voltage DC bus (used for the electric traction). The control strategy is phase shift of the full bridge converter. Using this topology we reduce the switching losses. Conventional converter at two levels of voltage by only one full bridge converter using two planar transformers in high frequency the primary are coupled in parallel and the secondary are in series. We minimized the size and the weight of the converter. The high frequency converter advantages in terms of cost, efficiency, flexibility, and increased due to the possibility of easy synchronous rectification implementation.
Volume: 9
Issue: 1
Page: 5-11
Publish at: 2018-01-01

The Control Structure for DC Motor based on the Flatness Control

10.11591/ijpeds.v8.i4.pp1814-1821
Thang Nguyen Trong
This article presents the new control structure for a Direct Current Motor (DC Motor) using the flatness-control principle. Basic on the mathematical model of DC Motors, the author demonstrates the application ability of the fatness-control theory to control the DC Motor, and then calculates the parameters and proposes the structure of the flatness-controller. The proposed structure is built and ran on Matlab-Simulink software to verify the system efficiency. The simulation results show that the quality of the control system is very good, especially in case of the flatness controller combined with PID controller to eliminate static error when the parameters of the DC Motor have been not known accurately.
Volume: 8
Issue: 4
Page: 1814-1821
Publish at: 2017-12-01

Non-contact Heart Rate Monitoring Analysis from Various Distances with different Face Regions

10.11591/ijece.v7i6.pp3030-3036
Norwahidah Ibrahim , Razali Tomari , Wan Nurshazwani Wan Zakaria , Nurmiza Othman
Heart rate (HR) is one of vital biomedical signals for medical diagnosis. Previously, conventional camera is proven to be able to detect small changes in the skin due to the cardiac activity and can be used to measure the HR. However, most of the previous systems operate on near distance mode with a single face patch, thus the feasibility of the remote heart rate for various distances remains vague. This paper tackles this issue by analyzing an optimal framework that capable to works under the mentioned issues. Initially, plausible face landmarks are estimated by employing cascaded of regression mechanism. Next, the region of interest (ROI) was constructed from the landmarks in a face location where non rigid motion is minimal. From the ROI, temporal photoplethysmograph (PPG) signal is calculated based on the average green pixels intensity and environmental illumination is separated using Independent Component Analysis (ICA) filter. Eventually, the PPG signal is further processed using series of temporal filter to exclude frequencies outside the range of interest prior to estimate the HR. As a conclusion, the HR can be detected up to 5 meters range with 94% accuracy using lower part of face region.
Volume: 7
Issue: 6
Page: 3030-3036
Publish at: 2017-12-01

An Agent Architecture for Qos-Based Web Service Composition Using the Skyline Algorithm

10.11591/ijict.v6i3.pp179-188
El-Alami Ayoub , Hair Abdellatif
Web service composition is a concept based on the built of an abstract process, by combining multiple existing class instances, where during the execution, each service class is replaced by a concrete service, selected from several web service candidates. This approach has as an advantage generating flexible and low coupling applications, based on its conception on many elementary modules available on the web. The process of service selection during the composition is based on several axes, one of these axes is the QoS-based web service selection. The Qos or Quality of Service represent a set of parameters that characterize the non-functional web service aspect (execution time, cost, etc...). The composition of web services based on Qos, is the process which allows the selection of the web services that fulfill the user need, based on its qualities. Selected services should optimize the global QoS of the composed process, while satisfying all the constraints specified by the client in all QoS parameters. In this paper, we propose an approach based on the concept of agent system and Skyline approach to effectively select services for composition, and reducing the number of candidate services to be generated and considered in treatment. To evaluate our approach experimentally, we use a several random datasets of services with random values of qualities.
Volume: 6
Issue: 3
Page: 179-188
Publish at: 2017-12-01

Towards a Consistent Measurement Stream Processing from Heterogeneous Data Sources

10.11591/ijece.v7i6.pp3164-3175
Mario Diván , María de los Ángeles Martín
In this work an updating of the C-INCAMI (Context-Information Need, Concept model, Attribute, Metric and Indicator) conceptual framework for Measurement and Evaluation projects was proposed. The updating incorporated better supporting for the measures stream processing. Therefore, a new version of the measurement interchange schema based on the updated C-INCAMI framework was introduced. This new schema incorporated the concept of “complementary data” linking them with geographic information. The complementary data could be associated with the measures and allowed us incorporating video, geographic information, text plain, audio or pictures with the quantitative measures (deterministic or estimated) jointly. A practical case associated with the Weather Radar of the Experimental Agricultural Station (EAS) INTA Anguil (Province of La Pampa, Argentina) was shown, indicating the advantages of the new schema.
Volume: 7
Issue: 6
Page: 3164-3175
Publish at: 2017-12-01

Single Phase Inverter System using Proportional Resonant Current Control

10.11591/ijpeds.v8.i4.pp1913-1918
K.C. Chen , S. Salimin , S. A. Zulkifli , R. Aziz
This paper presents the harmonic reduction performance of proportional resonant (PR) current controller in single phase inverter system connected to nonlinear load. In the study, proportional resonant current controller and low pass filter is discussed to eliminate low order harmonics injection in single phase inverter system. The potential of nonlinear load in producing harmonics is showed and identified by developing a nonlinear load model using a full bridge rectifier circuit. The modelling and simulation is done in MATLAB Simulink while harmonic spectrum results are obtained using Fast Fourier Transfor. End result show PR current controller capability to overcome the injection of current harmonic problems thus improved the overall total harmonic distortion (THD).
Volume: 8
Issue: 4
Page: 1913-1918
Publish at: 2017-12-01

A Leaky Wave Antenna Design Based on Half-mode Substrate Integrated Waveguide Technology for X Band Applications

10.11591/ijece.v7i6.pp3467-3474
S. Doucha , M. Abri , H. Abri Badaoui , B. Fellah
A new type of leaky-wave antenna (LWA) using half-mode substrate integrated waveguide (HMSIW) as the base structure is proposed in this paper. The structure consists of an array of slot, antenna designed to operate in X band applications from 8 to 12 GHz. HMSIW preserves nearly all the advantages of SIW whereas its size is nearly reduced by half. The antenna radiates one main beam that can be steered from the backward to the forward direction by changing frequency.
Volume: 7
Issue: 6
Page: 3467-3474
Publish at: 2017-12-01

A Novel Fuzzy Self Tuning Technique of Single Neuron PID Controller for Brushless DC Motor

10.11591/ijpeds.v8.i4.pp1705-1713
M.A. Abdel Ghany , Mohamed A. Shamseldin , A.M. Abdel Ghany
In this paper, a combination ANN/Fuzzy technique is used to design a Novel Fuzzy Single Neuron PID (NFSNPID) controller to achieve high performance brushless DC motor. The design steps include two parts. The first part uses the genetic algorithm (GA) to find the optimum parameters of Single Neuron PID (SNPID) controller, while the former deals with the design of fuzzy logic control to update the weights of SNPID control online. To demonstrate the designed controller effectiveness, a comparative study is made with between the NFSNPID, Conventional Fuzzy Single Neuron PID CFSNPID and SNPID. All controllers were used to drive, separately, the brushless DC motor against the sudden change of load and operating speed. The performed simulations show better results that motivate for further investigations.
Volume: 8
Issue: 4
Page: 1705-1713
Publish at: 2017-12-01

Photovoltaic Thermal (PVT) System with and Without Fins Collector: Theoretical Approach

10.11591/ijpeds.v8.i4.pp1756-1763
Muhammad Zohri , Nurato Nurato , Ahmad Fudholi
The fins collector design for solar thermal has widely been used and it has a higher thermal efficiency than without Fins. Photovoltaic thermal (PV/T) system produced Electrical and thermal energy instantaneously. Mathematical modeling based on steady-state thermal analysis of PV/T system with and without fins was conducted with matrix inversion method. The value results show that the PV/T system with fins collector is higher thermal and electrical efficiency than without fins.
Volume: 8
Issue: 4
Page: 1756-1763
Publish at: 2017-12-01

Finding Bad Code Smells with Neural Network Models

10.11591/ijece.v7i6.pp3613-3621
Dong Kwan Kim
Code smell refers to any symptom introduced in design or implementation phases in the source code of a program. Such a code smell can potentially cause deeper and serious problems during software maintenance. The existing approaches to detect bad smells use detection rules or standards using a combination of different object-oriented metrics. Although a variety of software detection tools have been developed, they still have limitations and constraints in their capabilities. In this paper, a code smell detection system is presented with the neural network model that delivers the relationship between bad smells and object-oriented metrics by taking a corpus of Java projects as experimental dataset. The most well-known object-oriented metrics are considered to identify the presence of bad smells. The code smell detection system uses the twenty Java projects which are shared by many users in the GitHub repositories. The dataset of these Java projects is partitioned into mutually exclusive training and test sets. The training dataset is used to learn the network model which will predict smelly classes in this study. The optimized network model will be chosen to be evaluated on the test dataset. The experimental results show when the modelis highly trained with more dataset, the prediction outcomes are improved more and more. In addition, the accuracy of the model increases when it performs with higher epochs and many hidden layers.
Volume: 7
Issue: 6
Page: 3613-3621
Publish at: 2017-12-01

Asymmetrical Half-join Method on Dual Vision Face Recognition

10.11591/ijece.v7i6.pp3411-3420
Edy Winarno , Imam Husni Al Amin , Wiwien Hadikurniawati
This research proposes a model of face recognition using the method of joining two face images from left and right lens from a stereo vision camera namely half-join method. Half-join method is used in face image normalization processing. The proposed half-join method is a face images joining model, which is called asymmetrical half-join. In asymmetrical half-join method, a RoI (region of interest) of face image from left and right lenses are provided based on axis center of each eye in eye detection. The cropping of face image from asymmetrical half-join model has different width depends on eyes coordinate location. The proposed system shows that the asymmetrical half-join method can produce a better of face recognition rate. The experimental results show that the asymmetrical half-join method has a better recognition rate and computation time than single vision method and symmetrical half-join method.
Volume: 7
Issue: 6
Page: 3411-3420
Publish at: 2017-12-01

Reactive Power Compensation in Industrial Grid via High-power Adjustable Speed Drives with Medium Voltage 3L-NPC BtB converters

10.11591/ijpeds.v8.i4.pp1455-1466
Radionov A.A., A. A. , Gasiyarov Vadim R. , Maklakov Alexander S. , Maklakova Ekaterina A.
The objective of this study is to develop and research a new method of reactive power compensation in industrial grid via high-power adjustable speed drives (HP ASDs) with medium voltage (MV) three level neutral point clamped back-to-back (3L-NPC BtB) converters. The article is concerned with the mathematical description, control system designing and obtaining of experimental results. An important advantage of the new method is that specialized equipment is not necessary for its implementation. The analysis of our experimental research shows that the developed reactive power compensation method has been successfully applied for main HP ASD of plate mill rolling state 5000 (Magnitogorsk Iron and Steel Works, PJSC). Some ways for future industrial application prospects and improvements of the designed method are outlined in the conclusion of the paper.
Volume: 8
Issue: 4
Page: 1455-1466
Publish at: 2017-12-01

A Novel Four-Phase Active Boost Switched Reluctance Inverter for High Speed SRM Drive

10.11591/ijpeds.v8.i4.pp1562-1574
J. L. Beniwal , R. K. Tripathi
A novel four-phase active boost switched reluctance inverter (SRI) having capability of improving performance of high speed SRM drive is presented. The proposed SRI provides fast fluxing as well as rapid de-fluxing with only two additional small voltage rating boost capacitors as compared to conventional SRI. Two boost capacitors were connected in such a way that each boost capacitor handles two alternate phases. This is an alternate solution to the problem caused by the overlap phase current which prevents the boost capacitor voltage to buildup. In proposed SRI, either of a boost capacitor and dc-link source forms the series connection during fluxing and de-fluxing period. Thus, the higher voltage for fluxing of SRM and negative higher voltage for de-fluxing of SRM are obtained. The operating mode analysis of proposed SRI are given in detail. The simulation for the conventional and proposed SRI has been performed and compared. And results justify the superior performance of proposed SRI.
Volume: 8
Issue: 4
Page: 1562-1574
Publish at: 2017-12-01

Robust Video Watermarking Scheme Based on Intra-Coding Process in MPEG-2 Style

10.11591/ijece.v7i6.pp3332-3343
Rakesh Ahuja , S. S. Bedi
The proposed scheme implemented a semi blind digital watermarking method for video exploiting MPEG-2 standard. The watermark is inserted into selected high frequency coefficients of plain types of discrete cosine transform blocks instead of edge and texture blocks during intra coding process. The selection is essential because the error in such type of blocks is less sensitive to human eyes as compared to other categories of blocks. Therefore, the perceptibility of watermarked video does not degraded sharply. Visual quality is also maintained as motion vectors used for generating the motion compensated images are untouched during the entire watermarking process. Experimental results revealed that the scheme is not only robust to re-compression attack, spatial synchronization attacks like cropping, rotation but also strong to temporal synchronization attacks like frame inserting, deleting, swapping and averaging. The superiority of the anticipated method is obtaining the best sturdiness results contrast to the recently delivered schemes.
Volume: 7
Issue: 6
Page: 3332-3343
Publish at: 2017-12-01

A Response Analysis of Mobile Augmented Reality Application for Tourism Objects

10.11591/ijece.v7i6.pp3500-3506
Imam Tahyudin , Dhanar Intan Surya Saputra
As a form of innovation in a promotion media Tourism Objects in Indonesia especially at Purbalingga District, one is through Mobile Augmented Reality (MAR). The utilization of technology application of MAR, give the impression of interactive and real towards an object tourism and provide a special experience for tourists to get the information completely including the tourism location. To deliver care facilities to users, we need the evaluation to development or improvement for next application. The method used in this research is evaluation of user satisfaction towards the multimedia elements. The result of MAR user satisfaction showed that almost all respondents are well satisfied.
Volume: 7
Issue: 6
Page: 3500-3506
Publish at: 2017-12-01
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