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27,404 Article Results

Evaluation Research of Traction Motor Performance for Mine Dump Truck Based on Rough Set Theory

10.12928/telkomnika.v12i2.46
HuiLai; University of Science and Technology Beijing Sun , Chun; University of Science and Technology Beijing Jin , Shuyang; University of Science and Technology Beijing Zheng , Haiyong; China CNR Corporation limited, Beijing Tian
This paper presents the traction motor evaluation method depending on the electric transmission energy transfer characteristics and different source of supply, including motor manufactures, diesel turbine manufacturers, wheel side reducer manufacturers and electric drive system integrated manufacturers. 9 evaluations are proposed in 3 levels from the motor body and control performance, electric drive system coordinate index, driving conditions and specific cycle. Motor performance evaluation system is published by the means of electric transmission tests and computer simulation platform, using rough set theory. Experimental results show that the model can accurate evaluation of state of the traction motor, Evaluation of the accuracy is better than the subjective weighting analysis, verifying the integrity and usefulness of this valuation method. At the same time, the comprehensive evaluations index of permanent magnet synchronous motors is high, it has important research value. 
Volume: 12
Issue: 2
Page: 333-342
Publish at: 2014-06-01

Information Interchange Layer based on Classification of Information Use (IU)

10.12928/telkomnika.v12i2.70
Albarda; Institut Teknologi Bandung Albarda , Suhono Harso; Institut Teknologi Bandung Supangkat , Kuspriyanto; Institut Teknologi Bandung Kuspriyanto , Jaka; Institut Teknologi Bandung Sembiring
Information characteristics in classification of IU directly related to aspects of information usage by user in enterprise to accomplish their activities. Feature extraction from information usage in three layer of enterprise management used as parameter for this characteristic. Characteristics and dimension applied to develop middle-ware system (called Information Interchange Layer) that bridges a common issue ie information silo, to optimize a services of information resources in enterprise
Volume: 12
Issue: 2
Page: 485-492
Publish at: 2014-06-01

The Research and Desige of the CNC Constant Voltage Power

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3546
Shiwei Lin
CNC constant voltage power is composed by the analog power circuit, MCU control circuit , pulse width modulation circuit, a power driver amplifier , analog to digital conversion circuit , the input voltage setting circuit and the output voltage display circuit. The power possesses the functions of digital regulator, high precision output, short-circuit & over-current protection and alarm functions, especially for a higher accuracy requirements for various occasions. DOI: http://dx.doi.org/10.11591/telkomnika.v12i6.5443
Volume: 12
Issue: 6
Page: 4603-4608
Publish at: 2014-06-01

Visual Surveillance for Hajj and Umrah: A Review

10.11591/ijai.v3.i2.pp90-104
Yasir Salih Ali , Mohammed Talal Simsim
This paper presents advances on crowd management research with specific interest on high density crowds such as Hajj and Umrah crowds. In the past few years, there has been increasing interest in pursuing video analytics and visual surveillance to improve the security and safety of pilgrimages during their stay in Mecca. Despite the fact that visual surveillance research has matured significantly in the rest of the world and had been implemented in many scenarios, research on visual surveillance for Hajj and Umrah application still remains at its early stages and there are many issues that need to be addressed in future research. This is mainly because Hajj is a very unique event that shows the clustering of millions of people in small area where most advanced image processing and computer vision algorithms fail to generate accurate analysis of the image content. There is a strong need to develop new algorithms specifically tailored for Hajj and Umrah applications. This review aims to give attentions to these interesting future research areas based on analysis of current visual surveillance research. The review also pinpoint to pioneer techniques on visual surveillance in general that can be customized to Hajj and Umrah applications.
Volume: 3
Issue: 2
Page: 90-104
Publish at: 2014-06-01

Object-Oriented Publish/Subscribe System

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3535
Biao Dong
Existing methodologies based on the request/response model for system software design, rooted in principles of object-oriented design, lead to tightly-coupled interactions, and lack coordination capacities. The publish/subscribe(P/S) paradigm is particularly suitable for loosely- coupled communication environment. A design of event and subscription models under an object- oriented environment was motivated by the idea of using P/S paradigm for an object-oriented environment. The P/S service is comprised of two subsystem-compiler and executor. In each subsystem, its form, working process, and typical algorithms are analysed from the point of object-oriented and technology of P/S paradigm separately. Experiment was simulated in the following two aspects: user’s model and middle code generation, and shows that using the P/S service improves the usability of P/S systems. DOI: http://dx.doi.org/10.11591/telkomnika.v12i6.5391 
Volume: 12
Issue: 6
Page: 4521-4527
Publish at: 2014-06-01

An Efficient Imaging Strategy for Single Pixel Camera in Earth Observation

10.11591/ijeecs.v12.i6.pp4794-4801
Chuanrong Li , Qi Wang , Changyong Cao , Lingling Ma
Single pixel camera is a new imaging device that develops from the “ghost” imaging and compressive sensing theory. For high resolution imaging with large amount of data, the process of measurement and reconstruction is time-consuming, which limits its application to remote sensing area. Based on the analysis of the configuration of the single pixel camera, an efficient imaging strategy through combining different numbers of DMD mirrors and local imaging was proposed which is able to image the interested target in high resolution with low time cost. Simulation experiment was carried out for two different types of targets, i.e., three-line target image and the scene consisting of a ship in the ocean. Three types of images, in low, middle and high resolution, are reconstructed respectively by the control of DMD working area and the strategy to combining DMD mirrors. The reconstructed images reached the application requirements at very low measurement and reconstruction time cost. The effectiveness and practicality of this strategy could be applied to other compressive sensing imaging devices.
Volume: 12
Issue: 6
Page: 4794-4801
Publish at: 2014-06-01

Marine Sink-Float Safety Device’s Control System Based on Fuzzy Control

10.11591/ijeecs.v12.i6.pp4787-4793
Zi Yue Wu , Jie Qi , Chen Nan Xue
In order to ensure safety work of marine equipment, this paper introduces a kind of sink-float safety device which can match with marine equipment to realize protection work, and a fuzzy controller set up by fuzzy control algorithm. The data of the control system is collected by multi-sensor and filtered through the filter circuit. Under a 5 grade sea condition, the marine sink-float safety device can carry marine equipment, escaping from the harsh marine environment by diving to a certain depth. The simulation in MATLAB/Simulink shows that the control system could response fast and operate stably. Furthermore, it is able to control sink-float safety device efficiently and reach to the preset depth accurately. So we can guarantee the operation of marine equipment reasonably.
Volume: 12
Issue: 6
Page: 4787-4793
Publish at: 2014-06-01

Speaker Recognition Based on i-vector and Improved Local Preserving Projection

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3505
Di Wu , Jie Cao , HuaJin Wang
In order to enhance the recognition performance of the i-vector speaker recognition system under unpredicted noise environment, a improved local preserve projection which used for reduce dimension to i-vector is proposed on this paper. First , the non zero eigenvalue is rejected when we solve the optimized objective function, only using the eigenvalue which value greater than zero. A mapping matrix is obtained by solving a generalized eigenvalue problem, so can settle the singular value problem occurred in traditional local preserve projection algorithm.The experiment result shows,The recognition performance of the method proposed in this paper is improved under several kinds of noise environments. DOI : http://dx.doi.org/10.11591/telkomnika.v12i6.3994
Volume: 12
Issue: 6
Page: 4299-4305
Publish at: 2014-06-01

Application of Resource Migration on Housing Fund Archives System

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3536
Changxing Qi
This paper analyzes the feature and necessity of resource migration, and summarizes the commonly methods among different systems. According to the requirements of the systems in the housing fund center,an architecture model based on resource migration is designed. The process of migration, the format and specification of the data packet are described according to the architecture levels and the process.After the migration application is developed,the operation data of the system are analyzed and further suggestions are given. DOI : http://dx.doi.org/10.11591/telkomnika.v12i6.5392
Volume: 12
Issue: 6
Page: 4528-4535
Publish at: 2014-06-01

Additional Resource Allocation for improving Fairness in WiMAX

10.12928/telkomnika.v12i2.55
Khalid Mahmood; Universiti Teknologi Malaysia Awan , Abdul Hanan; Universiti Teknologi Malaysia Abdullah , Khalid; Universiti Teknologi Malaysia Hussain
IEEE 802.16 standard provides resources to both service classes Constant Bit Rate (CBR) and Variable Bit Rate (VBR). Both of these services required enough resources to transmit data efficiently.Considering available literature there is a gap to provide additional resources for fulfillment of the required service class.In this paper we propose a Service Based Fair Resource Allocation (SBFRA) Mechansim, for evaluating the required service from Subscriber (SS) along with the channel condition. Our proposed model evaluates, for providing the required service to SS how much additional resource will be required. In this model we introduced Priority Queue Scheduling Methodology for providing additional resources as per channel condition. In this paper we made comparison with and without proposed model on both traffic, CBR and VBR. We experiment that our proposed model manages the user request by providing them additional resources as required for satisfaction. Their request handled in Priority Queue Scheduling based mechanism. Results shows, that we achieve improvement by providing the additional resource on fair scheduling basis. To achieve the required performance for fairness we have to compromise on with delay.
Volume: 12
Issue: 2
Page: 455-464
Publish at: 2014-06-01

Optimal Asymmetric S-shape Acceleration/Deceleration for Multi-axial Motion Systems

10.11591/ijeecs.v12.i6.pp4778-4786
Chang-yan Chou , Shyh-Leh Chen
In this study, an optimization algorithm is proposed for asymmetric s-shape acceleration/deceleration to achieve better contour accuracy for biaxial systems. The optimization is based on the method of genetic algorithm incorporated with the constraints made by the motion system. Numerical simulations of an XY table driven by linear motors following a simple cornering path verify the effectiveness of the proposed algorithm.
Volume: 12
Issue: 6
Page: 4778-4786
Publish at: 2014-06-01

Searching and Visualization of References in Research Documents

10.12928/telkomnika.v12i2.74
Firnas; Institut Pertanian Bogor Nadirman , Ahmad; Institut Pertanian Bogor Ridha , Annisa; Institut Pertanian Bogor Annisa
This research aims to develop a module for information retrieval that can trace references from bibliography entries of research documents, specifically those based on Bogor Agricultural University (IPB)’s writing guidelines. A total of 242 research documents in PDF from the Department of Computer Science IPB were used to generate parsing patterns to extract the bibliography entries. With modified ParaTools, automatic extraction of bibliography entries was performed on text files generated from the PDF files. The entries are stored in a database that is used to visualize author relationship as graphs. This module is supplemented by an information retrieval system based on Sphinx search system and also provides information of authors’ publications and citations. Evaluation showed that (1) bibliography entry extraction missed only 5.37% bibliography entries caused by incorrect bibliography formatting, (2) 91.54% bibliography entry attributes could be identified correctly, and (3) 90.31% entries were successfully connected to other documents.
Volume: 12
Issue: 2
Page: 447-454
Publish at: 2014-06-01

The Non-equidistant Multivariable New Information MGM(1,n) Based on New Information Background Value Constructing

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3504
Zheming He , Xiaoyi Che , Qiyun Liu
Applying the principle in which new information should be used fully and modeling method of grey system for the problem of lower precision as well as lower adaptability in non-equidistant multivariable MGM(1,n)model, a non-equidistant multivariable new information MGM(1,n) model was put forward which was taken the mth component as the initialization. As the background value is an important factor affecting the precision of grey system model, based on index characteristic of grey model, the characteristic of integral and new information principle, the new information background value in non-equidistant multivariable new information MGM(1,n) was researched and the discrete function with non-homogeneous exponential law was used to fit the accumulated sequence and the formula of new information background value was given. This new non-equidistant multivariable MGM(1,n) model can be used in equidistance & non-equidistance modeling and has the characteristic of high precision as well as high adaptability. Examples validate the practicability and reliability of the proposed model. DOI : http://dx.doi.org/10.11591/telkomnika.v12i6.4822
Volume: 12
Issue: 6
Page: 4290-4298
Publish at: 2014-06-01

Improved Multi-secret Sharing Scheme Based on One-Way Function

10.11591/ijeecs.v12.i6.pp4463-4467
Geng Yong-Jun , Guo Li-Zheng , Zheng Ming-Hui
The weakness He-Dawson’s threshold multi-secret sharing scheme is presented and analyzed. By using the one-way function thought in the He-Dawson scheme, a new multi-use and multi-secret sharing scheme is proposed. The improved scheme is multi-time-use of once secret shares distribution and can resist conspiring attack. Furthermore, the new scheme is multi-secret sharing, group secrets can be reconstructed in free order and different group secret is corresponding to different threshold value which can meet with different practical application. At last, the security and efficiency of the new proposed multi-secret sharing scheme are analyzed. DOI:  http://dx.doi.org/10.11591/telkomnika.v12i6.5483 
Volume: 12
Issue: 6
Page: 4463-4467
Publish at: 2014-06-01

Robust Weighted Measurement Fusion Kalman Predictors with Uncertain Noise Variances

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3558
Wen-juan Qi , Peng Zhang , Gui-huan Nie , Zi-li Deng
For the multisensor system with uncertain noise variances, using the minimax robust estimation principle, the local and weighted measurement fusion robust time-varying Kalman predictors are presented based on the worst-case conservative system with the conservative upper bound of noise variances. The actual prediction error variances are guaranteed to have a minimal upper bound for all admissible uncertainties of noise variances. A Lyapunov approach is proposed for the robustness analysis and their robust accuracy relations are proved. It is proved that the robust accuracy of weighted measurement robust fuser is higher than that of each local robust Kalman predictor. Specially, the corresponding steady-state robust local and weighted measurement fusion Kalman predictors are also proposed and the convergence in a realization between time-varying and steady-state Kalman predictors is proved by the dynamic error system analysis (DESA) method. A Monte-Carlo simulation example shows the effectiveness of the robustness and accuracy relations. DOI : http://dx.doi.org/10.11591/telkomnika.v12i6.5453
Volume: 12
Issue: 6
Page: 4692-4704
Publish at: 2014-06-01
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