Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Advanced Search
Filter Icon

Filters article

Years

FAQ Arrow
Single Year
Range Year
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

23,598 Article Results

Energy-Efficient Multi-SPEED Routing Protocol For Wireless Sensor Networks

https://ijece.iaescore.com/index.php/IJECE/article/view/5481
Babak Namazi , Karim Faez
Wireless Sensor Networks(WSN) consist of a large number of sensor nodes randomly deployed in an area of interest to collect information from the environment. Due to lack of resources, energy efficiency and Quality of Service(QoS) are challenging issues in WSNs. In This paper, a new localized routing protocol is proposed which considers different QoS requirements in WSN. For latency considerations, it takes into account multiple levels of delay requirements by implementing different speed layers. Reliability needs are met by dynamically adjusting the transmission power of the sender and based on the energy consumed at the transmitter and the residual energy of the receiver, the forwarding decision is made. Finally, the performance of the protocol is evaluated using computer simulation.DOI:http://dx.doi.org/10.11591/ijece.v3i2.2294
Volume: 3
Issue: 2
Page: 246-253
Publish at: 2013-04-01

Design of Real Time Walsh Transform for Processing of Multiple Digital Signals

https://ijece.iaescore.com/index.php/IJECE/article/view/5475
Z. Zulfikar , Shuja A Abbasi , A. R. M. Alamoud
This paper presents the design and implementation of multiple digital signals processing using real-time Walsh transforms. The design of real time Walsh transform is done in such a way that it starts producing outputs instantly even before all input data have entered the system. The system consists of Walsh Transform circuit, several Digital Signal Processing (DSP) circuits, and an inverse Walsh transform circuit. The real time Walsh and inverse Walsh transforms are also designed to produce right results for any possible combinations of input data. DSP blocks are able to perform addition, subtraction, and dyadic convolution process of Walsh coefficients of more than one digital signals. Comparisons to the previous methods are briefly presented. It was found that the design of real time Walsh transform structure has better performance than many of the previously reported results in the literature.DOI:http://dx.doi.org/10.11591/ijece.v3i2.1965
Volume: 3
Issue: 2
Page: 197-206
Publish at: 2013-04-01

Estimation Normal Vector of Triangular Mesh Vertex by Angle and Centroid Weights and its Application

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2161
Yueping Chen , Jian Gao , Hao Wen , Xin Chen
To compute vertex normal of triangular meshes more accurately, this paper presents an improved algorithm based on angle and centroid weights. Firstly, four representational algorithms are analyzed by comparing their weighting characteristics such as angles, areas and centroids. The drawbacks of each algorithm are discussed. Following that, an improved algorithm is put forward based on angle and centroid weights. Finally, by taking the deviation angle between the nominal normal vector and the estimated one as the error evaluation standard factor, the triangular mesh models of spheres, ellipsoids, paraboloids and cylinders are used to analyze the performance of all these estimation algorithms. The machining and inspection operations of one mould part are conducted to verify the improved algorithm. Experimental results demonstrate that the algorithm is effective. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2340
Volume: 11
Issue: 4
Page: 1841-1848
Publish at: 2013-04-01

Adaptive RBFNN Formation Control of Multi-mobile Robots with Actuator Dynamics

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2155
Li Yan-dong , Zhu Ling , Sun Ming
We study the problem of formation control and trajectory tracking for multiple nonholonomic mobile robots with actuator and formation dynamics. An adaptive neural-network (NN) control strategy that integrated kinematic controller with input voltages controller of actuator was proposed. A control law was designed by backstepping technique based on separation-bearing formation control structure of leader-follower. The radial basis function neural network (RBFNN) was adopted to achieve on-line estimation for the dynamics nonlinear uncertain part for follower and leader robots. The adaptive robust controller was adopted to compensate modeling errors of NN. This strategy not only overcomed all kinds of uncertainties of mobile robots, but also ensured the desired trajectory tracking of robot formation in the case of maintaining formation. The stability and convergence of the control system were proved by using the Lyapunov theory. The simulation results showed the effectiveness of this proposed method. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2334
Volume: 11
Issue: 4
Page: 1797-1806
Publish at: 2013-04-01

Application of Designing Economic Mechanisms to Power Market - Part 2 Characteristic Analysis of Generation Side Power Market

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2180
ZHU Yonggang , XIE Qingyang , YING Liming
The incentive power market may lead to a high information cost if it is not informationally efficient. The paper analyzes the characteristic of the generation side power market mechanism model based on the designing economic mechanisms theory by the three GENCOs (Generation Companies) case. The result of analysis is that the mechanism model has four main features: the informationally efficient which means that the mechanism meets requirements of the observational efficiency, the communication efficiency and the low complexity of computing; the incentive compatibility which indicates that the resource allocation of the power market is Pareto Optimality and the social benefit achieves the maximization when GENCOs also achieve profit maximization; the decentralized decision which refers to preserving the privacy information of GENCOs; encouragement of competition which suggests that the mechanism encourages GENCOs to compete with each other healthily. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2370
Volume: 11
Issue: 4
Page: 1967-1972
Publish at: 2013-04-01

FEM Analysis of Squirrel Cage Induction Motor Fed with Raised Sine Wave Supply

https://ijece.iaescore.com/index.php/IJECE/article/view/5470
Balakrishnan M S , Theagarajan R
AC motors are used frequently for many industrial applications such as material handling, traction, electric vehicles etc. A novel non-sinusoidal modulation technique employing Raised Sine Wave (RSW) for the PWM inverter is proposed in this paper. Squared Sine Wave has a distinct advantage of reduced rate of change at zero crossing of each half cycle, and eliminates the need for dead band. An Finite Element Analysis (FEM) is carried out to study its suitability for AC Induction Motor. The results show that the operation has a constant startup torque for all load conditions, thus providing a smooth start from zero speed to full rated speed. This feature makes it most suitable for applications requiring frequent startup such as traction. The operation of the conventional Variable Frequency Drives using Conventional Sine Wave (CSW) is compared with the results obtained with RSW supply.DOI:http://dx.doi.org/10.11591/ijece.v3i2.1705
Volume: 3
Issue: 2
Page: 153-157
Publish at: 2013-04-01

Use of QC Methods to Improve the Utilization Efficiency of Condensate Water

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2178
Xinquan Jiang , Xinqiao Jiang
Condensation of water use for energy saving and emission reduction is of great significance, and QC methods is an effective method to improve the utilization of condensate management. This article will be the empirical study on the condensation water in the target Enterprise workshop as objects, study how to use QC method to improve the recovery rate, and to adopt effective measures to improve the production process of condensation water, eventually able to resolve their energy-saving emission reduction issues. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2368
Volume: 11
Issue: 4
Page: 1956-1960
Publish at: 2013-04-01

The Effect of Rearrangement of the Most Incompatible Particle on Increase of Convergence Speed of PSO

https://ijece.iaescore.com/index.php/IJECE/article/view/5480
Abbas Fadavi , Karim Faez
This article presents a new method for increasing the speed of Particle Swarm Optimization (PSO) method. The particle swarm is an optimization method that was inspired by collective movement of birds and fish looking for food. This method is composed of a group of particles: each particle tries to move in one direction that the best individual and best group of particles occur in that direction. Different articles tried to expand PSO so that global optimization is gained in less time. One of the problems of this model that occurs in most cases is falling of particles in local optimum. By finding the most incompatible particle and its rearrangement in the searching space, we increase convergence speed in some considered methods. Different tests of this method in standard searching space demonstrated that this method takes account of suitable function of increasing the convergece speed of particles.DOI:http://dx.doi.org/10.11591/ijece.v3i2.2026
Volume: 3
Issue: 2
Page: 238-245
Publish at: 2013-04-01

Model and Calculation of Container Port Logistics Enterprises Efficiency Indexes

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2210
Xiao Hong , Wu Yan , Gu Hongxia
The throughput of China’s container port is growing fast, but the earnings of inland port enterprises are not so good. Firstly ,the initial efficiency evaluation indexes of port logistics are reduced and screened by rough set model, and then logistics performance indexes weight are assigned by the rough totalitarian calculation method. As well, the rank of the indexes and the important indexes are picked up by combining with ABC management method. So the port logistics enterprises can monitor the key indexes to reduce cost and improve the efficiency of the logistics operations. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2401
Volume: 11
Issue: 4
Page: 2164-2167
Publish at: 2013-04-01

The Study of Comprehensive Evaluation of Power Industry Energy Saving and Emission Reduction Based on the Improved Osculating Value Method

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2212
SONG Xiao-hua , CHEN Ling-qing , ZU Pi-e , MU Lan
This paper expounded the meaning of energy saving and emission reduction of power industry and analyzed the main factors of energy saving and emission reduction of power industry of low-carbon economy by combining low-carbon economy and development demand of power industry. We constructed evaluation index system and evaluation model of energy saving and emission reduction in power industry under the background of low-carbon economy. Then we carried on the empirical analysis. These provided the theoretical reference of the energy saving and emission reduction in power industry under the background of low-carbon economy for the government agencies, the electricity regulatory departments and other relevant units. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2402
Volume: 11
Issue: 4
Page: 2174-2180
Publish at: 2013-04-01

A Comparative Study of Identification Techniques for Fractional Models

https://ijece.iaescore.com/index.php/IJECE/article/view/5474
JALLOUL Abdelhamid , Khaled JELASSI , Jean-Claude TRIGEASSOU
A comparative study of methods for fractional system identification is presented in this paper. The fractional system is modeled by the help of a non integer integrator which is approximated by a J+1 dimensional modal system composed of an integrator and first order systems. This identification method is compared to other techniques available in the Matlab toolbox. The model parameters are estimated by an output-error technique using a non linear iterative optimization algorithm. Numerical simulations show the performance of the modal approach for modeling and identification.DOI:http://dx.doi.org/10.11591/ijece.v3i2.2130
Volume: 3
Issue: 2
Page: 186-196
Publish at: 2013-04-01

Segmentation for Fabric Weave Pattern Using Empirical Mode Decomposition Based Histogram

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2184
Li Qingfu , Yuan Ye , Chen Junxia
This paper is focused on the segmentation of the fabric weave patterns for the urgent requirement of fabric imitative design and redesign.The weave patterns related to the fabric yarn are determined by a new technology,which is called bidimensional mode decomposition based method. The proposed method first iteratively decompose the underlying fabric image into a number of intrinsic mode functions (IMFs). The first order IMF is applied to to calculate histogram and fabric weave pattern segmentation results are obtained by integrating corresponding threshold decision strategies such as double maxima algorithm or Otsu algorithm . In comparison with the original image-only based histogram segmentation method ,the presented method have a high precision. Simulation results show that BEMD based method is a promising approach for the segmentation of fabric weave pattern. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2374
Volume: 11
Issue: 4
Page: 1996-2001
Publish at: 2013-04-01

Micro-ANP Network Protocol Architecture and Simulation Implementation

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2150
DU Xiujuan , LAN Shenglin , LIU Fan , FENG Zhenxing
Due to the unique characteristics of underwater sensor network (UWSN), conventional network protocols for terrestrial WSN are unable to satisfy the performance of UWSN. In addition, the limits of energy, CPU and memory of UWSN nodes demand the protocol stack running on them should be simple and efficient. The paper proposed a Micro-ANP protocol architecture model for UWSN, which are three layered including application layer, network-transport layer and physical layer, optimized packet size using three objective functions: packet throughput, energy consumption and resource consumption under Micro-ANP architecture by means of MATLAB, designed and implemented UWSN simulation platform based on Micro-ANP and QualNet software, lay a solid foundation for further research on underwater sensor network. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2328
Volume: 11
Issue: 4
Page: 1757-1768
Publish at: 2013-04-01

Underground Cable Fault Detection Using Robot

https://ijece.iaescore.com/index.php/IJECE/article/view/5469
Rejith Raj , Jery Althaf , Muhammad Imthiaz
Present trend of laying cables for various purposes is to lay underground. Companies prefer laying the cables underground because the climatic adversities don’t affect this. With advantages come challenges. There are many difficulties in laying the cables and once laid in case of any complaints, it is difficult and costly to fix it. This paper is about the robot that is designed by us which is capable of finding where the complaint lies, so the engineer can directly get the hole dug at that point and fix the issue. The basic principle of Electromagnetic Theory is employed to detect the discontinuity in the cable. Using a signal injector, a low frequency signal is passed through the wire and the induced magnetic field is used to detect the fault.DOI:http://dx.doi.org/10.11591/ijece.v3i2.1839
Volume: 3
Issue: 2
Page: 145-152
Publish at: 2013-04-01

Robust Multivariable controller Design with the simultaneous H2 /H∞/µ for Single Person Aircraft

https://ijece.iaescore.com/index.php/IJECE/article/view/5485
Javad Mashayekhi Fard , Mohammad Ali Nekoui , Ali Khaki Sedigh , Roya Amjadifard
In a physical system several targets are normally being considered in which each of nominal and robust performance has their own strengths and weaknesses. In nominal performance case, system operation without uncertainty has decisive effect on the operation of system, whereas in robust performance one, operation with uncertainty will be considered. The target of present paper is a balance between nominal and robust performance of state feedback A new approach of present paper is the combination of two controllers of μ and H2/H∞.  The controller for robust stability status, nominal performance, robust performance and noise rejection are designed simultaneous. Controller will be achieved from solving constraint optimization problem. Where a simultaneous H2 /H∞/µ robust multivariable controller has been designed over an X-29 Single Person.  This model has three inputs and three outputs, where the state space equations of the system response to an unstable one. Simulation results show the effectiveness and benefits of the method.DOI:http://dx.doi.org/10.11591/ijece.v3i2.2352
Volume: 3
Issue: 2
Page: 279-286
Publish at: 2013-04-01
1 2 3
...
1573 1574
Show 1505 of 1574

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration