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23,598 Article Results

Probes Vacillating and Mapping Technique at Testing Micro-area Sheet Resistance

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2159
Zhihui Zhu , Xinfu Liu , Runli Zhang , Ruqing Zhang , Nan Jiang
This article briefly elaborated the basic concepts of the probe vacillated at testing a large silicon wafer with square four point probe equipment. The importance of the micro-area’s sheet resistance is discussed and the basic principles of four point probe measurement technology are analyzed. Some factors that affect the measurement accuracy are studied, and interference can be avoided while measuring and analyzing the impact on square four point probe measurement by probe vacillate. The calculation formula of the square micro-area probe measurement is deduced when probes vacillated discretionarily. An experiment was made with a small wafer sample and accurate resistivity was gotten. The electrical resistivity is tested for another silicon wafer by a square four point probe equipment. Color Mapping graphics was designed for displaying  the micro-area resistance. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2338
Volume: 11
Issue: 4
Page: 1828-1834
Publish at: 2013-04-01

Artificial Tune of Fuel Ratio: Design a Novel SISO Fuzzy Backstepping Adaptive Variable Structure Control

https://ijece.iaescore.com/index.php/IJECE/article/view/5473
FARZIN Piltan , MOHAMMAD Mansoorzadeh , SAEED ZARE , FATEMEH Shahryarzadeh , MEHDI AKBARI
This paper examines single input single output (SISO) chattering free variable structure control (VSC) which controller coefficient is on-line tuned by fuzzy backstepping algorithm. VSC methodology is selected as a framework to construct the control law and address the stability and robustness of the close loop system based on Lyapunove formulation. The main goal is to guarantee acceptable fuel ratio result and adjust. The proposed approach effectively combines the design technique from variable structure controller is based on Lyapunov and fuzzy estimator to estimate the nonlinearity of undefined system dynamic in backstepping controller. The input represents the function between variable structure function, error and the rate of error. The outputs represent fuel ratio, respectively. The fuzzy backstepping methodology is on-line tune the variable structure function based on adaptive methodology. The performance of the SISO VSC which controller coefficient is on-line tuned by fuzzy backstepping algorithm (FBSAVSC) is validated through comparison with VSC and proposed method. Simulation results signify good performance of trajectory in presence of uncertainty torque load. DOI:http://dx.doi.org/10.11591/ijece.v3i2.2092
Volume: 3
Issue: 2
Page: 171-185
Publish at: 2013-04-01

Automatic Generation Control of Multi-Area Power System with Generating Rate Constraints Using Computational Intelligence Techniques

10.11591/ijape.v2.i1.pp27-38
P. Subbaraj , K. Manickavasagam
In a large inter-connected system, large and small generating stations are synchronously connected and hence all stations must have the same frequency. The system frequency deviation is the sensitive indicator of real power imbalance. The main objectives of AGC are to maintain constant frequency and tie-line errors with in prescribed limit. This paper presents two new approaches for Automatic Generation Control using i) combined Fuzzy Logic and Artificial Neural Network Controller (FLANNC) and ii) Hybrid Neuro Fuzzy Controller (HNFC) with gauss membership functions. The simulation model is created for four-area interconnected power system. In this four area system, three areas consist of steam turbines and one area consists of hydro turbine. The components of ACE, frequency deviation (F) and tie line error (Ptie) are obtained through simulation model and used to produce the required control action to achieve AGC using i) FLANNC and ii) HNFC with gauss membership functions. The simulation results show that the proposed controllers overcome the drawbacks associated with conventional integral controller, Fuzzy Logic Controller (FLC), Artificial Neural Network controller (ANNC) and HNFC with gbell membership functions. 
Volume: 2
Issue: 1
Page: 27-38
Publish at: 2013-04-01

Multicomponent Chirp-like Jammer Excision in DSSS Communication Systems Using Hilbert-Huang Hough Transform

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2182
Yuan Ye , Mei Wenbo
A novel and efficient approach for multicomponent chirp-like jammer excision in direct sequence spread spectrum (DSSS) communication systems using Hilbert-Huang Hough (HH-H) transform is proposed, which is the generalization of marginal Hilbert spectrum. The approach iteratively decomposes the received signal into intrinsic mode functions (IMFs) and applies Hilbert transform to each IMF to yield Hilbert spectrum (HS), by which the embedded jammers can be well concentrated in the time-frequency plane along their instantaneous frequency laws. By performing Hough transform over the HS and searching peaks in the parameter space, parameters estimation and components reconstruction of the multicomponent chirp-like jammer are implememted. Simulation results are presented showing performance comparison between the proposed method and the fractional Fourier transform (FrFT) based method in the case of two chirp-like jammer components. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2372
Volume: 11
Issue: 4
Page: 1983-1989
Publish at: 2013-04-01

Modeling of New Three-Phase High Voltage Power Supply For Industrial Microwave Generators With One Magnetron Per Phase

https://ijece.iaescore.com/index.php/IJECE/article/view/5484
El Ghazal Naama , M. Chraygane , M. Ferfra , A. Belhaiba , M. Fadel , B. Bahani
This original work treats the feasibility study of a new HV power supply with a three-phase character, supplying a magnetron 800 Watts-2450 MHz per phase, for industrial microwave generators from the modeling with the EMTP code of a single-phase HV power supply for one magnetron. The exploitation of the modeling, with EMTP code, of the power system for one magnetron is to use, essentially, the developed model of its transformer, which is a π quadruple, consisting of saturable inductances able to translate the non-linear phenomena of saturation, while guaranteeing the stabilization process of the magnetron current. Using the new power supply device with a three-phase character and the EMTP code, the feasibility study, in nominal mode, of the three-phase power supply was performed satisfactory. The analysis of the results obtained helped to confirm the possibility of functioning of this new system without interaction between magnetrons, which provides, relative to the current device, gains of size, volume, cost of implementation and maintenance and makes this new system more economical, while guaranteeing the regulation process of the current in each magnetron.DOI:http://dx.doi.org/10.11591/ijece.v3i2.2409
Volume: 3
Issue: 2
Page: 270-278
Publish at: 2013-04-01

Permanent Magnet Tracking Position Sensor

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2156
Degang Lv , Ningzhi Jin
In view of the disadvantages of traditional position sensor, a novel permanent magnet tracking position sensor is proposed. The hall component is used to convert the magnetic signal reflecting the shaft velocity and position into an electrical signal by the construction and optimization of magnetic field. And then the resolver-to-digital conversion is carried out by arctangent so as to obtain the signals of shaft position and velocity. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2335 
Volume: 11
Issue: 4
Page: 1807-1812
Publish at: 2013-04-01

Application of Designing Economic Mechanisms to Power Market - Part 1 Generation Side Power Market Design

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2179
XIE Qingyang , ZHU Yonggang , YING Liming
The paper studies on the core philosophy and algorithm of the designing economic mechanisms theory, a new algorithm of designing incentive compatible power market mechanisms is proposed, a generation side power market mechanism model which has features of inventive compatibility, informationally efficient and decentralized decision is constructed. The power market based on the designing economic mechanisms theory can lead to the Pareto Optimality of the resource allocation; meanwhile GENCOs are permitted to pursue profits maximization. The paper is in two parts. Part 1 focuses on the process of constructing a generation side power market competitive mechanism model based on the designing economic mechanisms theory. Part 2 presents the characteristic analysis of the generation side power market competitive mechanism. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2369
Volume: 11
Issue: 4
Page: 1961-1966
Publish at: 2013-04-01

GA and ACO Algorithms Applied to Optimizing Location of Controllers in Wireless Networks

https://ijece.iaescore.com/index.php/IJECE/article/view/5478
Dac-Nhuong Le
Optimizing location of controllers in wireless networks is an important problem in the cellular mobile networks designing. In this paper, I present two algorithms based on Genetic Algorithm (GA) and Ant Colony Optimization (ACO) to solve it. In the first algorithm, my objective function is determined by the total distance based on finding maximum flow in a bipartite graph using Ford-Fulkerson algorithm. In the second algorithm, I generate pheromone matrix of ants and calculate the pheromone content of the path from controller i to base station j using the neighborhood includes only locations that have not been visited by ant k when it is at controller i. At each step of iterations, I choose good solutions satisfying capacity constraints and update step by step to find the best solution depending on my cost functions. I evaluate the performance of my algorithms to optimize location of controllers in wireless networks by comparing to SA, SA-Greedy, LB-Greedy algorithm. Numerical results show that my algorithms proposed have achieved much better more than other algorithms.DOI:http://dx.doi.org/10.11591/ijece.v3i2.2290
Volume: 3
Issue: 2
Page: 221-229
Publish at: 2013-04-01

Improving Electrical Power Grid of Jordan and Control the Voltage of Wind Turbines Using Smart Grid Techniques

10.11591/ijape.v2.i1.pp39-44
Nadeem T. Ahmad
In this paper, we improved the national grid of Jordan country by adding a renewable resources specifically a wind turbines generation unites distributed on different places in Jordan to compensate the losses of the power in Jordan and to dispense with using the generation of fuel and gas by representing the national grid of Jordan in ETAB simulator and we solved the voltage problems of wind turbines using a new mythology using smart grid techniques
Volume: 2
Issue: 1
Page: 39-44
Publish at: 2013-04-01

Appraising the Recital of Joints in Human Running Gait through 3D Optical Motion

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2147
Sajid Ali , Zhongke Wu , Mingquan Zhou , Muhammad Aslam Asadi , Hafeez Ahmed
Recital costing of Joints in human running is biometrics evaluation technology. It has skillful series of realizations in scientific research in the last decade. In this work, we present a human running joints (hip, knee and ankle) valuation recital based on the statistical computation techniques. We use the One-way ANOVA, least significant difference (LSD) test and Bartlett's test for equality of variances to determine which joint has more variation with others joints during human running gait. These three joints rotation angle data were computed from the Biovision Hierarchical data (BVH) motion file, because these joints provide the richest information of the human lower body joints (hip, knee and ankle). The use of BVH file to estimate the participation and performance of the joints during running gait is a novel feature of our study. The experimental results indicated that, the knee joint has the decisive influence (variation) as compared to the other two joints, hip and ankle, during running gait. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2019
Volume: 11
Issue: 4
Page: 1731-1740
Publish at: 2013-04-01

Comparative Research on Total Transfer Capability Calculation using Load Model

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2152
Guoping Shi , Jun Liang , Peng Gu
This paper proposes a method calculating total transfer capability(TTC) and critical voltage using static power model based on real-time recording data, traditional power system dispatching calculation doesn’t consider load model, which does not agree with the real, this paper compares TTC and critical voltage under different load model and P-V curves, on which load model has a strong influence, so load modeling is necessary based on real-time data and is significant for improving system stability. The simulations show necessity and suitability of the method. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2330
Volume: 11
Issue: 4
Page: 1776-1780
Publish at: 2013-04-01

Neural Control based on Incomplete Derivative PID Algorithm

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2202
QiZhi Wang , Xiaoxia Wang
In the actual control, complete differential digital PID algorithms have been widely used. But the differential will amplify high-frequency noise. If the differential response is too sensitive, it is easy to cause the control process oscillation, incomplete PID control algorithms can overcome the differential oscillation. Incomplete derivative PID algorithm combined with neural network improves the system control quality, it has the important practical significance. The simulation shows it has good position tracking performance and high robustness. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2392
Volume: 11
Issue: 4
Page: 2110-2115
Publish at: 2013-04-01

A Three Dimensional Simulation Method of the Gantry Crane

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2214
Jingsong LI , Hang Su , Quan Liu
Until now, many companies have developed lots of the port machinery remote monitoring systems. However, these monitoring systems usual display the operating status of the port machinery by the schematic diagram, Legend and data. The presentation of information is unable to describe the status of the large number of port machinery. In order to solve the problem, a three-dimensional simulation method of the gantry crane based on the WPF is proposed. This paper studies WPF technology and 3D modeling techniques, on this basis, proposes a kind of the gantry crane 3D simulation method based on WPF, establishes a new generation monitoring system based on 3D, immersive and interactive real-time simulation environment. This system could simulate the real-time 3D virtual scene of the gantry crane, and real-time 3D analog display port machinery running posture and operating environment. Experiments show that CPU and memory usage rate is low enough when the system is running. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2404
Volume: 11
Issue: 4
Page: 2187-2194
Publish at: 2013-04-01

Pilot Solar Thermal Power Plant Station in Southwest Louisiana

10.11591/ijape.v2.i1.pp45-52
Terrence Chambers , Jonathan R Raush , G.H. Massiha
Solar thermal plants are basically power plants that generate electricity from high-temperature heat. The difference between them and conventional power plants is that instead of deriving energy from gas, coal or oil, the sun provides the energy that drives the turbines. In this paper we will give a brief demonstration of solar thermal power and different system designs of solar thermal power plants. Then we will see the feasibility of implementing solar power plants in Louisiana which currently depends mostly on its conventional power plants which use traditional fuels such as gas, oil, and coal.  This study was a part of a proposal that was funded by the US the Department of Energy to construct solar thermal plant near Lafayette, Louisiana. The power plant is currently under the construction and it will be completed by Summer of 2013.
Volume: 2
Issue: 1
Page: 45-52
Publish at: 2013-04-01

Participation of Renewable Energy Sources in Restructured Power System

10.11591/ijape.v2.i1.pp1-14
Sandeep Bhongade , B. Tyagi
In the present paper, a frequency control method based on Genetic Algorithm (GA) has been presented. The proposed scheme has been successfully tested on well known IEEE 39- bus test system. A deregulated electricity market scenario has been assumed in the test system. It has been assumed that both the generators and the consumers are participating in the frequency regulation market. Simulation results show that the proposed GAPID Controller along with HVDC link improves the system frequency. The performance studies have been carried out by using the MATLAB SIMULINK for transactions within and across the control area boundaries.
Volume: 2
Issue: 1
Page: 1-14
Publish at: 2013-04-01
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