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INDONESIA
Indonesian Journal of Electrical Engineering and Computer Science
Published by Institute of Advanced Engineering and Science
ISSN : 25024752     EISSN : 25024760     DOI : -
Core Subject :
Arjuna Subject : -
Articles 40 Documents
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Search results for , issue "Vol 10, No 5: September 2012" : 40 Documents clear
Construction Equipment Control Research Based on Predictive Technology Jiejia LI; Rui QU; Yang CHEN
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

Aiming at the characteristics which variable air volume air conditioning system is multi-variable, nonlinear and uncertain system, normal fuzzy neural network is hard to meet the requirements which dynamic control of multi-variable. In this paper, we put forward a recursive neural network predictive control strategy based on T-S fuzzy model. Through T-S fuzzy recursive neural network predictor on line established controlled object’s mathematical model, and using neural network controller on line corrected information we get, thus to improve control effect. The simulation results show that T-S fuzzy recursive neural network predictive control has stronger robustness and adaptive ability, high control precision, better and reliable control effect and other advantages.  DOI:http://dx.doi.org/10.11591/telkomnika.v10i5.1277 
A security communication scheme for Real-Time EPON Qu Jun-suo
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

Problem of real-time performance is a mostly obstacle on Ethernet used to industrial control. In this paper, proposed a RT-EPON concept, combines real-time performance of real-time Ethernet and efficiency of EPON. And the security threats to the proposed architecture are analyzed. By utilizing the symmetric cryptographic techniques and challenge-response mechanism, a secure communication scheme with encryption and authentication functions is presented. DOI:http://dx.doi.org/10.11591/telkomnika.v10i5.1349 
Optimum Design of a Five-Phase Permanent Magnet Synchronous Motor for Underwater Vehicles by use of Particle Swarm Optimization Reza Ilka; S. Asghar Gholamian
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

Permanent magnet synchronous motors are efficient motors which have widespread applications in electric industry due to their noticeable features. One of the interesting applications of such motors is in underwater vehicles. In these cases, reaching to minimum volume and high torque of the motor are the major concern. Design optimization can enhance their merits considerably, thus reduce volume and improve performance of motors. In this paper, a new method for optimum design of a five-phase surface-mounted permanent magnet synchronous motor is presented to achieve minimum loss and magnet volume with an increased torque. A multi-objective optimization is performed in search for optimum dimensions of the motor and its permanent magnets using particle swarm optimization. The design optimization results in a motor with great improvement regarding the original motor. Finally, finite element analysis is utilized to validate the accuracy of the design. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1176
Research on Near-Fault Problems in Earthquake Engineering Chengjiang Lu
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

The state-of-the-art of near-fault problems in earthquake engineering is comprehensive reviewed. Strong ground motions in the near-fault region exhibit several new characteristics, which cause the attentions of both seismologists and engineers who zealously studied these ground motions during the last two deceases. The investigation on ground motions can interpret the mechanism of the earthquake. Also the ground motions, which are usually assigned by engineers as a type of input loading for seismic design of structures, can sometimes control the final design result. Hence, the characteristics of the loading and the corresponding response of structures are desired for studying. This paper deals with the inherent characteristics of near-fault ground motions and the influences of near-fault ground motions on civil structures. Existing problems are pointed out and work needing further investigation in the future is also discussed. DOI:http://dx.doi.org/10.11591/telkomnika.v10i5.1279 
The Methods of Factor Weight’s Determine in the Process of Cluster Wang Dinglei; Li Jianyong; Xu Wensheng
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

The goal of product design is to meet the anticipated design goal. The process of product’s modularization should accommodate the multi-design objective. The rules and the its factor weight are determined impersonally by the method of AHP (Analytic Hierarchy Process) for the different goal. There are various relationships between the parts, such as continuity, noncontinuity, and simply relationship. The different calculated methods are studied base on the different character between the parts’ interaction values, and the objectivity and accuracy have been improved. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1344
Distribution Grid Fault Location Applying Transient Zero-mode Current Hongsheng Su; Yunchuan Zhang
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

To aim at the puzzles on faults location in distribution grids, the paper analyzed the distributing characteristics of transient zero-mode currents as the faults occurred, with the aid of correlation theory, a new fault circuit-selection and fault-location method was proposed based on transient zero model current for power distribution grid faults. The method is based on such a fact that the RMS was maximum of fault line transient zero-mode current, and the inner products between it and other line transient zero-mode current were less than zero, in addition, the transient zero-model currents at two sides of the fault point possessed opposite polarity and diverse waveform, and as well as small correlation coefficient closer to zero. In the end, the simulation results show that the proposed method on circuit-selection and fault-location for power distribution grids fault based on transient zero- mode current is correct and effective, and not affected by voltage epoch angle, and grounding resistance, and as well as neutral-point grounding modes. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1289 
An efficient Method for Synthesizing the Arbitrary View of a Large-Scale Object in a Scene Thin Lai Lai Thein
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

A robust method for panorama view reconstruction from multiple viewpoints of the large-scale object is presented. The desired object must be acquired from multiple viewpoints. The information of the feature points of an object is obtained by establishing correspondence between views. We present a robust method based on image mosaicing approach and panorama synthesizing. First, the feature of each object is extracted. Then the corresponding feature points of an object between the images are estimated. The different of minimum threshold value between two images is computed. After that, the full-view of an object is reconstructed by integrating two images based on image mosaicing approach.This research describes how to establish feature correspondences between images accurately and effectively. Image registration technique provides an initial estimation for establishing feature correspondences of point features. The linear solution with the reliable correspondences makes the computation of the geometric transformation between two images, called homography. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1178
Realization and Application of Customer Attrition Early Warning Model in Security Company Liu Bin; Qiu Huayong; Shen Yizhen
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

In this paper, we propose the customer attrition early warning model based on data warehouse and data mining technologies, which is achieved and applied in our security company. The modeling variables can be selected by means of the combination with decision tree and the gradual regression in Logistic regression. Then customer attrition early warning model can be constructed based on Logistic regression. The results show that the model can strongly promote the customer attrition capturing rate, push on the building of the company customer marketing management and customer service management organization, and economize the marketing cost. The company profits promotion and trade competitive power can be promised. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1270
Transverse Isotropism of Cancellous Bone as a Two-phase Porous Structure Haibin CHEN
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

Since the cancellous bone displays a fluid-solid coupled porous structure, its solid matrix exhibits excellent osteogenic property and has been extensively used as the scaffold material of tissue-engineering bone. It is the aim of the present paper to examine the transversely isotropic behavior of cancellous bone. Correspondingly, a two-dimension image analysis method was developed to determine the distribution characteristics of cancellous bone porosity. The fresh behind-leg tibia of three swine were dissected to develop a total of 36 HE staining specimens of cancellous bone, which were subjected to different anatomical locations along the axial or lateral direction. All cancellous bone specimens or cut-sections were examined microscopically and processed quantitatively. The main results and conclusions are as follows: (a) The cancellous bone porosity is gradually decreased along the axial direction of tibia and approaching to the cortical bone, but almost constant along the lateral direction of tibia. Correspondingly, cancellous bone can be modeled as a transversely isotropic, liquid saturated porous solid．(b) The two-dimensional image analysis method is able to be used to relatively accurately determine the distribution characteristics of the cancellous bone porosity from different directions if the number of cancellous bone cut-sections is sufficient. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1282 
An Interference-Aware Transmission Power Control Scheme for Vehicular On-board Monitoring Wireless Sensor Network Xiaofan Wu; Chun Chen; Jiajun Bu
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 5: September 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

Wireless sensor network (WSN) has been used widely in vehicular on-board monitoring area. In the scenario of vehicular monitoring, the wireless sensor nodes share similar electromagnet environment. This phenomenon can be used by the sending node to infer the receiver’s noise level. Moreover, the sender can decide the transmitting power accordingly. In this paper, we proposed a interference-aware approaching to control the transmission power of nodes in a vehicular on-board monitoring WSN. By making use of the relationship of noise level on the sender side and the receiver side, the sender node can decide the necessary transmitting power to send a packet successfully. Because the packets are sent at high enough transmission power, the Packet Reception Rate (PRR) is improved. At the same time, the network latency caused by communication failure is reduced. DOI: http://dx.doi.org/10.11591/telkomnika.v10i5.1351

Page 4 of 4 | Total Record : 40

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