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31,456 Article Results

Sensor data identification based reagent cabinet management system

10.11591/ijece.v9i6.pp5304-5311
Changsu Kim , Hongyoul Kim , Hoekyung Jung
Recently, a reagent cabinet is used in a laboratory or a laboratory is required to have a system capable of identifying a dangerous situation through sensor data as various sensors are utilized. The existing system identifies the dangerous situation through various sensor data, but there is a problem that the server performs all the operations and the operation of the device is performed manually. In order to solve this problem, this paper proposes a system that can identify the dangerous situation and automatically operate the equipment through the internal environment data of the reagent cabinet. Identification of the hazardous situation is done through the master node used in the reagent cabinet, not the server. The server can continuously update the sensor data through the master node and monitor the real-time status of the reagent cabinet through the application. In this way, it is expected that the risk situation will be promptly addressed by identifying the dangerous situation in the reagent cabinet and operating the device.
Volume: 9
Issue: 6
Page: 5304-5311
Publish at: 2019-12-01

Survey of part-of-speech tagger for mixed-code Indian and foreign language used in social media

10.11591/ijaas.v8.i4.pp264-268
Bhushan Ashokrao Nikam
Part-Of-Speech Tagger (POS Tagger) is a tool that scans the text in specific language and allocates chunks of speech to individual word (and another token), such as verb, adjective, nown etc., as more fine-grained POS tags are used in computational applications like 'noun-plural'. Basically, the goal of a POS tagger is to allocate linguistic (mostly grammatical) information to sub-sentential units, called tokens as well as to words and symbols (e.g. punctuation). This paper presents a survey of POS  Tagger used for code-Mixed Indian and Foreign languages. Various methods, procedures, and features required to device POS Tagger for code-mixed foreign languages especially for Indian are studied and observations related to it are reported.
Volume: 8
Issue: 4
Page: 264-268
Publish at: 2019-12-01

Ultra fast frequency independent instantaneous power factor detector

10.11591/ijpeds.v10.i4.pp1961-1968
Safaa S. Omran , Ali. Sh. Al-Khalid , Amer Atta Yaseen
Many schemes were attempted to lessenthe time taken for measuring thepower factor of a linear load. This paper suggests taking advantage of aprevious paper where only two samples of the voltage and current wereadequate to have a very fast calculation method of the power factor. Thatscheme used a phase locked loop (PLL) as a frequency multiplier scheme toacquire two progressive samples of the voltage and current which areconcurrent. The time elapsed for measurement was the reciprocal of the PLLsampling frequency; no further scheme was reported after that to claim afaster method. This paper gets use of that work to get two progressivesamples of voltage and current separated by a short time. The scheme isfrequency independent with an indication for lead lag. All the operations areexecuted by a PIC microcontroller rather than a computer with few supportcircuits. The output will be shown either in digital or analogue (DC) form.The percentage of error depends mainly on the resolution (number of bits)for both the ADC and DAC used.
Volume: 10
Issue: 4
Page: 1961-1968
Publish at: 2019-12-01

Cryptographic adaptation of the middle square generator

10.11591/ijece.v9i6.pp5615-5627
Hana Ali-Pacha , Naima Hadj-Said , Adda Ali-Pacha , Mohamad Afendee Mohamed , Mustafa Mamat
Currently, cryptography plays a major role in various computer and technological applications. With the high number of internet users, the use of cryptography to provide information security has become a priority. Several applications such as e-mails, electronic banking, medical databases and e-commerce require the exchange of private information. While, if the connection is not secure, this sensitive information can be attacked. The best-known cryptographic systems rely on the generation of random numbers, which are fundamental in various cryptographic applications such as key generation and data encryption. In what follows, we want to use pseudo-random sequences generated by the middle square generator. In this work, it must be possible to estimate that the data produced has random characteristics, knowing that the algorithm used is deterministic. Overall, this paper focuses on the testing of pseudo-random sequences generated by the middle square generator and its use in data encryption.
Volume: 9
Issue: 6
Page: 5615-5627
Publish at: 2019-12-01

Secure data aggregation in IoT using Efficient-CSDA

10.11591/ijece.v9i6.pp4889-4897
Swathi S , Yogish H K
In recent days, IoT has been widely accepted and WSN (Wireless Sensor network) is being used for variety of the applications such as transportation, medical, environmental, military, it moreover the main aim to deploy the WSN is to collect the data about the given set of phenomena. The common task of WSN is to sense the data and send over the network. Moreover, due to the various purpose such as statistical analysis, the data aggregation is required.  However, the when the dynamic network topology is considered, it is considered to be the very difficult task to provide the secure and efficient data aggregation. The main issue here is to ensure the security and accuracy of the data aggregation. Hence, in this research we have proposed an algorithm named as E-SDA (Efficient Secure Data Aggregation) in order to provide the secure data. In this, the algorithm provides the flexibility to detect the dishonest honest through neighbor monitoring. Later, extensive simulation has been done in order to prove the convergence of our algorithm.
Volume: 9
Issue: 6
Page: 4889-4897
Publish at: 2019-12-01

Power smoothing method of PMSG based grid integrated wind energy conversion system using BESS/DSTATCOM

10.11591/ijpeds.v10.i4.pp1969-1976
Jayalakshmi N. S. , D. N. Gaonkar , Sanchit Kumar Jain
The output of the PMSG based wind energy conversion system (WECS) is fluctuating in nature due to intermittency of wind speed. The distribution static synchronous compensator (DSTATCOM) incorporated with the battery energy storage system (BESS) is used to smooth the power produced from wind generator system. The control strategy of BESS/DSTATCOM and its integration to mitigate the power fluctuations of grid connected WECS is presented. Three-leg three-phase voltage source converter (VSC) based DSTATCOM is used and the battery current is controlled to smooth the net power injected to the utility grid from wind power generation system. The control strategy implemented has the capability of supplying the required amount of power to the utility with help of batteries. The PQ control strategy is employed to control the three-phase inverter for managing power exchange with the utility grid. The real time wind speed data is considered for the simulation study of the system. The effectiveness of the control strategy of the system is validated through the simulation results in MATLAB/Simulink environment.
Volume: 10
Issue: 4
Page: 1969-1976
Publish at: 2019-12-01

Modeling of three-limb three-phase transformer relates to shunt core using in industrial microwave generators with n=2 magnetron per phase

10.11591/ijece.v9i6.pp4556-4565
H. Outzguinrimt , M. Chraygane , M. Lahame , R. Oumghar , R. Batit , M. Ferfra
This paper describes the development and implementation of a digital simulation model of a three-phase transformer relates to shunt core transformer, which used to drive magnetron tubes in the microwave. The focus of this study is based on modeling of a new shell-type of three limbs three-phase transformer. The model uses to feed two magnetrons instead of one magnetron per phase. The proposed model is established on the simultaneous analysis of a duo electromagnetic lumped component equivalent circuit. This latter was implemented in a MATLAB environment under rated conditions. The results obtained from the application of the analytical method are provided results in conformity to the experimental tests in the case of single phase high voltage power supply for one magnetron.
Volume: 9
Issue: 6
Page: 4556-4565
Publish at: 2019-12-01

Advanced control structures for induction motors with ideal current loop response using field oriented control

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/20280
Vo Thanh Ha , Nguyen Tung Lam , Vo Thu Ha , Vo Quang Vinh
Field oriented control (FOC) is widely used for high performance induction motor (IM) electrical drive systems. Typically, FOC uses linear controls and space vector modulation (SVM) to control the fundamental components of the stator voltages. This work shows that based on a fast and precise inner current loop response one may flexibly employ different advanced control methods, to achieve high performance outer loops (speed and flux control). In this paper, novel approaches based on dead-beat scheme for the current loop combining with exact linearization, backstepping controls, and fatness-based methods for the outer loop are proposed. By comparing with classical PI control, the proposed method shows the outstanding features of system response such as fast, accurate and decoupling properties. The performance evaluation is given by experimental results.
Volume: 10
Issue: 4
Page: 1758-1771
Publish at: 2019-12-01

A novel compact CPW Band-stop filter using O-DGS configuration

10.11591/ijece.v9i6.pp4836-4844
Elmahjouby Sghir , Ahmed Errkik , Jamal Zbitou , Larbi El abdellaoui , Abdelali Tajmouati , Mohamed Latrach
A novel and compact multi-band stop filter using two different structures of circular DGS and circular DGS loaded with O-DGS unit, has good selectivity and  wide upper pass band performance  with good rejection based on defected ground structure (DGS) integrating a circular ring  resonator to suppress undesired spurious bands frequency or harmonics in radio frequency and microwave circuits is proposed. An equivalent circuit model has been derived for the both structures of circular DGS and circular DGS loaded. The presented filter has a compact size because the circular ring resonator is integrated in DGS, the both of them are etching in the ground plane. The proposed filter presents an optimization method for generating multi-band characteristics without using a periodic cells or other complicate topology. The simulated results by ADS Agilent are presented and compared with the results simulated by two others software: CST and HFSS. Good agreement between the three simulated results is observed.
Volume: 9
Issue: 6
Page: 4836-4844
Publish at: 2019-12-01

Fault disturbances classification analysis using adaptive neuro-fuzzy inferences system

10.11591/ijeecs.v16.i3.pp1196-1202
Shahrani Shahbudin , Murizah Kassim , Roslina Mohamad , Saiful Izwan Suliman , Yuslinda Wati Mohamad Yusof
This paper affords the use of neuro-fuzzy technique called the Adaptive Network–based Fuzzy Inference System (ANFIS) to highlight its ability to perform fault disturbances classification tasks using extracted features based on S-transforms methods. The ANFIS model with a five-layered architecture was trained using extracted features to classify signal data comprising various faults disturbances, namely, voltage sag, swell, impulsive, interruption, notch, and pure signal.  Results obtained showed that the ANFIS model is very suitable and can generate excellent classification results provided that the right type and number of Membership Functions (MFs) are used in the classification task.
Volume: 16
Issue: 3
Page: 1196-1202
Publish at: 2019-12-01

An analytical multicriteria model based on graph theory for reliability enhancement in distribution electrical networks

10.11591/ijece.v9i6.pp4625-4636
Anass Lekbich , Abdelaziz Belfqih , Tayeb Ouaderhman , Jamal Boukherouaa , Faissal El Mariami
The electrical distribution network is a critical and complex system in terms of safety and reliability, because it is composed of different components (switches, reclosers, etc.). The improvement of its reliability is therefore one of the most important tasks through the good management of remote-controlled switches and reclosers in this network. This paper presents an analytical model based on graph theory to evaluate SAIDI and SAIFI indices based on the network architecture and the location of remote-controlled reclosers and switches. These indicators have been used to formalize a multi-objective mathematical model that respects the real operation constraints of equipments in smart grid. The applied model, in this article, was evaluated on an IEEE 13 bus network using the TOPSIS method to determine the optimal location of the switches and reclosers and to improve the overall reliability of the distribution network.
Volume: 9
Issue: 6
Page: 4625-4636
Publish at: 2019-12-01

Efficiency investigation of SS and SP compensation topologies for wireless power transfer

10.11591/ijpeds.v10.i4.pp2157-2164
Masood Rehman , Perumal Nallagownden , Zuhairi Baharudin
Wireless power transfer (WPT) using inductive and resonant coupling has been widely explored in recent years for ease and safety over conventional cable charging systems. The efficiency of WPT systems is reducing drastically due to an increase in air-gaps and misalignment between transmitter (Tx) and receiver (Rx). Many circuit topologies have been analyzed to improve the efficiency of WPT system based on symmetrical coils. However, the circuit topologies have not been studied widely for unsymmetrical coils. This paper presents the investigation of two fundamental topologies i.e. Series-Series (SS) and Series-Parallel (SP) for unsymmetrical coils as well as symmetrical coils. Theoretical analysis of both the compensation topologies have been accomplished, then modeling of both the topologies have been done using two different combination of circular coils. In first case, two similar size coils have been designed and in second case transmitter coil of higher dimensions than receiver coil is designed. The efficiency of the system has been analyzed at multiple distances in both cases by integrating coil structure with the circuit. The overall result show that when Tx is bigger than Rx, the SP topology gives better efficiency than SS counterpart.
Volume: 10
Issue: 4
Page: 2157-2164
Publish at: 2019-12-01

Development metrics measurement level for component reusability evaluation approach (CREA)

10.11591/ijece.v9i6.pp5428-5435
Suryani Ismail , Fatihah Mohd , Masita Abdul Jalil , Wan M.N. Wan Kadir
The study of software component reuse is rising in software development field and one of the methods used to reduce the production cost and time. Among the problems faced by software developers in component reuse, is the difficulty to determine which set of components are suitable to use in new software development. Thus, this study was conducted with the purpose; to define the characteristics of software component reusability evaluation approach (CREA) based on experienced software developer’s feedback, and to estimate the measurement level for each of the predefined metric. Three characteristics and sub characteristics, namely understandability (documentation level and observality), adaptability (customizability), and portability (external dependency) were identified that have been used to develop the metrics for CREA. The result for all metrics will be used as an input to the fuzzy inference system (FIS) for measuring the reusability level of the component.
Volume: 9
Issue: 6
Page: 5428-5435
Publish at: 2019-12-01

A study on non-linear behavior of memristor emulator using multisim

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/16183
Eadala Sarath Yadav , Rajesh B , Srinivasan C.R , Sai Kalyan P
A Memristor (memory resistor) is a two terminal non-linear passive element used to relate magnetic flux with respect to electric charge. A Memristor opposes the flow of electric current across a device like a resistor but also remember the last charge that was flowing through it.  Memristor is a fourth passive circuit element after inductor ‘L’ resistor ‘R’, and capacitor ‘C. The voltage and current relationship in a memristor is a multivariable function therefore analyzing the circuit is a difficult task. This paper depicts the designing of a memristor model emulator using multisim and studied about its linear and non-linear characteristics.
Volume: 16
Issue: 3
Page: 1213-1220
Publish at: 2019-12-01

Tracking technique for the sudden change of PV inverter load

10.11591/ijpeds.v10.i4.pp2076-2083
Amer Tayes Saeed , Mohammed Qasim Taha , Abdullah Khalid Ahmed
Many power electronics applications require a power calculation in the control system. To get a suitable output, engineers need to control the process and regulate the power exchange with the grid. Since real and reactive power calculations are so crucial a topic, a novel control strategy for a single-phase photovoltaic (PV) inverter has been developed. Therefore, Direct power control (DPC) and a single-phase three-level space vector pulse width modulation (SVPWM) combine as a control and modulation system. In this paper, predictive real and reactive power control and SVPWM method are conferred in the inner loop. A voltage controller based on a proportionalintegral (PI) scheme is used in the outer loop to acquire constant output voltage and provide power refers to the DPC. The performance of the proposed method is verified by using MATLAB/SIMULINK.
Volume: 10
Issue: 4
Page: 2076-2083
Publish at: 2019-12-01
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