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24,092 Article Results

Zero Magnetic Flux Short-circuit Current Limiter Based on Passivity Control

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3284
Bing Wong , Zhengcai Fu
According to the basic principle of zero flux short-circuit current limiter, the control method of the space vector control was applied to the inverter to generate a tracking current which is to compensate the magnetic flux. Based on the theory of passivity control, the energy formation and damping injection method was used into designing the control part. In the environment of MATLAB/SIMULINK, a simulation model was established for short-circuit current limiter and passivity control. Compared with the traditional control method, short-circuit current limiter under passivity control showed a better steady state response. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.3874
Volume: 12
Issue: 4
Page: 2489-2496
Publish at: 2014-04-01

Design on Controlling-Management System of Gas Station

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3368
Xiaoning Jiang , Jing Liu
 With the sustained and rapid growth of domestic fuel consumption, consumers have made more and more high demand on the service of gas station. A stable and efficient refueling system which based on IC card is developed in this paper. The main purpose of this system is to realize the communication of pos terminal and tanker efficiently through protocol conversion, and the required functions of pos terminal and tanker are also achieved. In order to monitor the gas station much more conveniently, we design a real-time monitoring front-end interface which based on Ajax technology, and we can also control the tanker through the front-end interface. A stable refueling system can improve the economic benefit and company's core competitiveness. For it can provide scientific management and effective control of money, staff, oil, oil depot, equipment and so on. So refueling system has realistic necessity and important meaning of improving the working efficiency of the gas station and reducing the operational of the various costs. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4924
Volume: 12
Issue: 4
Page: 3177-3184
Publish at: 2014-04-01

Design of Multi-core Processor Software with Pipelining Strategy

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3346
Jian Zhang
At present, in the field of application of numerous IT, multi-core processors are widely used, the hardware development is much faster than the speed of software development. Multi-core processor software is using the design concept of single-core processor software, so this software is not high-performance and the performance processor is not fully played. This paper firstly introduces the traditional software design method based on multiple cores, and then points out two problems existing in it.To improve its efficiency, I propose a method called pipeline which can improve processor utilization and the throughput of a processor, at the same time, reduce the cost of the system. This method has been verified in the network packet processing. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4811
Volume: 12
Issue: 4
Page: 2950-2960
Publish at: 2014-04-01

Optimization Design of Cantilever Beam for Cantilever Crane Based on Improved GA

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3307
Shufang Wu , Tiexiong Su
Based on in depth study of optimization design methods, according to analyzing the forces of cantilever beam for Cantilever Crane, with the feature that I-beams used in cantilever beam mostly, combining structural optimization technique with discrete variables with GA, an optimization design method of cantilever beam for Cantilever Crane based on improved GA was proposed for the problems of huge material redundancy and high production cost. Mathematical model and fitness function of the structural optimization with discrete variables were built, optimization design of cantilever beam structure was achieved, the efficiency of this optimization design method was validated and the consumption of steel for production was reduced. This method had a certain guiding significance for engineering application. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4807
Volume: 12
Issue: 4
Page: 2652-2657
Publish at: 2014-04-01

3D Simulation of Fin Geometry influence on Corner effect in Multifin Dual and Tri-gate SOI-FinFETs

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3378
A.N. Moulai Khatir , A. Guen-Bouazza , B. Bouazza
In this work the corner effect sensitivity to fin geometry variation in multifin dual and tri-gate SOI-FinFETs is studied through a commercial, three-dimensional numerical simulator ATLAS from Silvaco International. These devices are compatible with conventional silicon integrated circuit processing, but offer superior performance as the device is scaled into the nanometer range. This study aims wider to use multiple fins between the source and drain regions. The results indicate that for both multifin double and triple gate FinFETs, the corner effect does not lead to an additional leakage current and therefore does not deteriorate the SOI-FinFET performance. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4668
Volume: 12
Issue: 4
Page: 3253-3256
Publish at: 2014-04-01

Recognition Based on Metric-optimized Neighborhood Preserving Embedding

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3294
Bo Chen , Ye Zhang
Face recognition is a biometric technology with great developable potential. It has a great deal of potential applications in public security and information security. To overcome the problem in the high-dimensional face data processing, the k-nearest neighbors is chose by Linear Discriminate Analysis (LDA). A Metric-optimized is proposed for Neighborhood Preserving Embedding (MONPE).MONPE algorithm, with the dimensions of data reduced by LDA, will be reasonable in NPE algorithm. On the other hand, LDA maximizes the between-class scatter and minimizes the within-class scatter, so the neighbors of a sample will have higher possibility to be picked from the same class .With the ORL face database and the Yale database, the recognition rate and run time is compared among NPE, MONPE and CLMONPE. The simulation results show that CLMONPE has obvious advantage in application DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4825 
Volume: 12
Issue: 4
Page: 2574-2581
Publish at: 2014-04-01

New Multi-function Composite Device Researching in Micro-grid

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3282
Shengqing Li , Weizhou Li , Wenxiang Xu , Huanyue Zeng
In the view of economic conditions to improve the Micro-grid quality, paper puts forward a new type multifunctional composite device. Combination the consistent characteristics of the main circuit structure from micro-grid energy storage battery and active power filter, combining the two components of multifunctional composite device, with corresponding control to achieve a variety of functions. This paper analyzes the working principle of the energy storage battery and active power filter, with the comparative analysis of its structural features, given the composite principle, derived the mathematical model of composite device, by containing harmonic suppression link power decoupled control method to achieve effective control. Simulation shows that the composite device effectively adjusting the active power and reactive power and harmonic suppression of Micro-grid, verify the rationality and validity of the composite device. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4735
Volume: 12
Issue: 4
Page: 2474-2479
Publish at: 2014-04-01

Research and Design of Nuclear Fuel Manipulate Crane ControlSystem

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3353
Zhaohui Mu , Rao Liu , Weidong Li
In order to solve the disadvantages of the Nuclear Fuel Manipulate Crane (ab. MC), the control system of MC is researched and designed, which is based on the operation experiences about Nuclear Fuel Transtion and Storage System (ab.PMC) in Daya Bay and Ling’ao Nuclear Power Plant.The new control system adopts single failure principle and makes use of the Device-net technology that is diffusely applied and extraordinary tried in practice. There are two Device-nets and one Ethernet, the two kinds of nets are combined.Applying the new technologies and new equipments, the new control system solves the defects which Ethernet and a single set of PLC don’t satisfy single failure principle, improves the safety and whole performance of MC loading and unloading of nuclear fuel assembly, and makes control system simply to wire. According to the design of the new control system, the product of MC has been successfully applied to Educate Center in Daya Bay Nuclear Power Site and FangchenggangNuclear Power Plant, and the result is obvious. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4835
Volume: 12
Issue: 4
Page: 3053-3058
Publish at: 2014-04-01

The Power Load Prediction Based on Improved Genetic Neural Network

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3279
Dong Dai , Lin-Chao Ma
There exist nonlinear and high redundancy between the power load factors, and the traditional methods in neural network can not eliminate the redundancy in the prediction data and capture the nonlinear characteristics, resulting in lower prediction precision of the power load. In order to improve the prediction precision of the power load, a power load prediction method based on improved genetic algorithm optimization neural network (IGA-BP) is put forward. First, the power load is reconstructed using the correlation function, and then performed the normalization processing. Secondly, the power load training sample is input into the BP neural network for learning, and then the initial connection weights and thresholds of the BP neural network are selected using the improved genetic algorithm. Finally, the power load prediction model is established. Simulation results show that the improved neural network can reflect the trend of complex non-linear power load, achieve higher power load fitting and prediction precision, and is an effective load prediction method for power system. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4302
Volume: 12
Issue: 4
Page: 2448-2457
Publish at: 2014-04-01

Hybrid K-means Algorithm and Genetic Algorithm for Cluster Analysis

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3337
Dianhu Cheng , Xiangqian Ding , Jianxin Zeng , Ning Yang
Cluster analysis isa fundamental technique for various filed such as pattern recognition, machinelearning and so forth. However, the cluster number is predefined by users inK-means algorithm, which is unpractical to implement.  Since the number of clusters is a NP-completeproblem, Genetic Algorithm is employed to solve it. In addition, due to the largetime consuming in conventional method, an improved fitness function isproposed. According to the simulation results, the proposed approach isfeasible and effective. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4805
Volume: 12
Issue: 4
Page: 2924-2935
Publish at: 2014-04-01

The Iris Recognition based on Curvelet Transform and Improved SVM

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3311
Cheng-Xi Gu , Cai-Dong Gu , Ya-Qin Li
In order to increase the accurate rates of the iris recognition, this paper proposes iris recognition method based on the combination of second generation curvelet transform and the Support Vector Machine Category correction. The images collected from iris image acquisition system are identified. First, rotation correction of iris and spot removal are carried out for collecting iris images. Then, iris images are through rectangular conversion, filter to extract edge point element from which judge the iris image quality. Furthermore, LoG operator is adopted to extract high-frequency energy on both sides of the iris pupil local area, and special judgment is taken out for pupil blocking by eyelids, eyelashes on basis of the energy spectrum. Finally, the cuckoo search algorithm is designed to optimize iris classifier of SVM parameters, and with the second generation curvelet transform algorithm, to complete iris recognition Results show that iris recognition with the CASIA 1.0 database, which contains 756 images of 108 eyes, is an efficient method for iris recognition with high recognition accuracy of iris image. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4289
Volume: 12
Issue: 4
Page: 2707-2717
Publish at: 2014-04-01

The Design of PID Controller Based On Hopfield Neural Network

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3369
Wenxia Du , Xiuping Zhao , Feng Lv , Hailian Du
With the complexity increase in industrial production process, the traditional Proportion-Integration-Differentiation(PID) control can not meet the requirements of the control system performance. Because neural network has the ability of adaptive, self-learning and nonlinear function approximation, control equality of system is improved if it is combined with traditional PID. In the paper, Hopfield neural network based on Hebb rules is used to identify the parameters of system, and then the state space model is established. Hopfield Neural network has the function of optimal calculation, PID controller based on Hopfield neural network is designed for a system can optimize the parameter of PID in real-time and improve control accuracy. Simulation result show the performance index is greatly improved. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4925
Volume: 12
Issue: 4
Page: 3185-3192
Publish at: 2014-04-01

Hardware-in-the-loop Simulation Platform of Photovoltaic Grid-Connected System

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3281
Lin FENG , Qing ZHONG , Nanhua YU , Kun WANG , Guojie LI , Kan CHEN
 The modeling and simulation of photovoltaic power generation system has become an important issue in the field of power generation. Research on the characteristics of photovoltaic (PV) grid-connected system by hardware-in-the-loop simulation could provide convenient experiment condition and accurate result. This article designs a photovoltaic grid-connected simulation platform for digital/physical hybrid real-time simulation, in which RTDS uses a digital-to-analog interface to communicate with external DSP devices. Maximum power point tracking (MPPT) and grid-connected control of a 520kWp PV system are performed on the platform. And the feasibility and effectiveness of hybrid PV system are validated by the analysis of hardware-in-the-loop result in RTDS. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4794
Volume: 12
Issue: 4
Page: 2465-2473
Publish at: 2014-04-01

Error Elimination Algorithm in 3D Image Reconstruction

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3309
Jin Xian-Hua , Zhao Yuan-Qing
In process of three-dimensional (3D) reconstruction, effective matching of feature is the key point of accurate reconstruction in later stage. In order to eliminate the error of modeling distortion caused by inaccurate feature matching in the process of 3D image reconstruction, a feature matching error elimination method based on collision detection is presented. A 3D image reconstruction mathematical model is established to operate the solution of image 3D reconstruction and camera space matrix elements of exterior orientation. The error of the feature matching in 3D dynamic modeling is eliminated according to the result of the collision two gray digital images are used to carry out simulation experiment. Experimental results show that the proposed algorithm can effectively eliminate the error of feature matching and improve the accuracy of the modeling. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4250
Volume: 12
Issue: 4
Page: 2690-2696
Publish at: 2014-04-01

Optimal Multi-Resource Scheduling Strategy Simulation Based on Improved Genetic Algorithm

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3334
Liu Chun
In order to prevent large-scale cloud space scheduling conflict, achieve reasonable dispatch of cloud computing resources. By conducting a detailed analysis of the cloud resources scheduling process, improved genetic algorithm is proposed based on cloud computing resource scheduling model. In this model, firstly, the resource scheduling sequences of cloud computing are encoding into chromosomes. Then in the scheduling process, load balancing degree of the cloud computing model is regarded as the optimization objective, aiming at the non-optimal problem occurred in scheduling process. By genetic algorithm selection, crossover and mutation operation, continue to search to find the optimal cloud computing resources scheduling scheme. Finally, simulation is operated on CloudSim platform. Simulation results show that, compared to traditional particle swarm optimization algorithm, which basically meet the requirements of automatic scheduling algorithm in the cloud computing environment, such as stability, reliability and high precision, not only improves resource utilization of cloud computing, but also shortens task completion time, while for rational management study of cloud computing resources provides theoretical reference, and promotes the continuous development of the research field. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4290
Volume: 12
Issue: 4
Page: 2898-2904
Publish at: 2014-04-01
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