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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 9,226 Documents
 274   275   276   277   278 
Cloth Simulation Based on Simplified Mass-Spring Model Wenqing Huang; Jing Hu; Keqiang Yu; Yaming Wang; Mingfeng Jiang
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 5: May 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

The technology of cloth simulation can be used in many fields. Based on physical model of cloth simulation, we established the simulation system with a simplified mass-spring model. A modified implicit method was proposed in order to produces realistic animation. This method can increase the computational efficiency to a large extent and is easy to be realized with a stable and good real-time performance. Furthermore, the approach of AABB (Axis-Aligned Bounding Boxes) is adopted for the detection of cloth collision. Experimental results show that our system can give excellent real-time effect of cloth simulation DOI : http://dx.doi.org/10.11591/telkomnika.v12i5.5124
Attenuation Model of Wireless Sensor Network for Large-Scale Farmland Environment Wu Huarui; Zhao Chunjiang; Zhu Li
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 2: February 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

The transmission characteristics of wireless sensor network nodes for large-scale farmland are influenced by factors such as farmland terrain environment, planting density and height. The vegetation canopy can absorb, scatter, and block RF signals, leading to large attenuation of signal strength and significant differences in link quality on the receiving end, which in turn affects the monitoring quality. The dynamic relationships between radio signal transmission, plant height, group range, and crop growth stages are identified through the analysis of summer corn perceptual information path loss at different growth stages. The gradual RSSI attenuation model of wireless sensor network for large-scale farmland environment is established. Research shows that during the corn tassel and seed-filling periods, the RSSI attenuation is most serious and the perception range reaches the minimum value when antenna height falls in the range of 0.5 meter to 1.7 meters. Through the model we can predict the intensity and perception range of the received wireless signals of summer corn on various perception levels at different growth stages. This model serves as the theoretical basis for the deployment of wireless sensor network nodes for large-scale farmland, aiming to achieve maximum monitoring range at minimum equipment cost. DOI: http://dx.doi.org/10.11591/telkomnika.v11i2.1981
A Photo Voltaic Source Fed Novel Boosting Switched Z-Source Multilevel Inverter Sinu KJ; G. Ranganathan
Indonesian Journal of Electrical Engineering and Computer Science Vol 9, No 1: January 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v9.i1.pp20-23

Abstract

This paper presents a new switched z-source multilevel inverter powered from a photovoltaic source. Addition of a power electronic switch in conventional z-source network provides excellent voltage boosting capability with moderate power rating which makes it suitable for low voltage photo voltaic applications. Proposed topology consists of single dc source, six power switches, two diodes, four capacitors and two inductors comparing to conventional five level schemes proposed topology contains less number of switches and passive elements. This scheme produces voltage waveform with lesser harmonics and shows lesser THD percentage by using different modulation index of multi carrier level shifted PWM technique. Proposed switched z-source multilevel inverter is implemented using MATLAB software and results are presented to verify merits of the scheme. 
An architecture of 5G based on SDN NV wireless network Abeer .A. Z. Ibrahim; Fazirulhisyam Hashim
Indonesian Journal of Electrical Engineering and Computer Science Vol 14, No 2: May 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v14.i2.pp725-734

Abstract

The unexpected increase demand growth of broadband traffic, rapid advancement in networking and internet technology led to the growth in Internet-connected devices to sensor networks, and machine type communication devices. These increases bring more challenges in network capacity and connectivity. The use of the new 5G technology continues to address these challenges by providing high data rates, low latency, and more mobility with highly and densified HetNe deploment. This densified network brings new challenges to service provisioning in future networks based on the recent network paradigm innovations, Network Virtualization and Software Defined Networking to cope with massive broadband connectivity and enhancement of capacity, flexibility, and scalability. This study sets out to present the key features and requirements for 5G HetNet, SDN and NFV.  The results of this study generally justify the challenges and how to integrate them into future wireless networks through a proposed 5G-based SDN-NV wireless network architecture to enable best network performance and resource management.
Design of a Current Starved Ring Oscillator Based VCO for Phase-Locked Loop Khairun Nisa’ Minhad; Zainab Kazemi; Mamun Bin IbneReaz; Jubayer Jalil; Noorfazila Kamal
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 9: September 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i9.pp6667-6672

Abstract

A design of the proposed VCO was developed for PLL in radio frequency identification (RFID) application. By using current starved ring oscillator, the designed circuit is simulated using 0.18-μm CMOS process in Mentor Graphics environment. The results show that the voltage drawn is around 5V supplied at VDD, and the product of this current and voltage has approximate 105.3 mW power consumption while the VCO generates 212 MHz at 1.4 V.
The Transplantation of BOA Based on Linux3.0.1 and S3C6410 Jianmin Wang; Haibo Wei
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 6: June 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

The web server is a tool of information queries and information dissemination based on hypertext. Special software didn’t need to be installed by the users, and can access the embedded devices by accessing the browser through a general-purpose PC. In this paper, the embedded Web Server BOA transplantation, in the latest ARM11 architecture S3C6410 processor and version of the Linux3.0.1 operating system and gave an example of how to access the browser to control the development Board as the instance for LED lights. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2677
Performance evaluation of portable air quality measurement system using raspberry pi for remote monitoring Muhammad Farhan Mohd Pu’ad; Teddy Surya Gunawan; Mira Kartiwi; Zuriati Janin
Indonesian Journal of Electrical Engineering and Computer Science Vol 17, No 2: February 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v17.i2.pp564-574

Abstract

United Nations’ Sustainable Development Goals focuses on good health and well-being for all. Air pollution becomes a huge threat to delivering on the vision of a better world and related at least to Goal 3, 7, 11, and 13. In Malaysia, air pollution index were monitored on 68 locations. The Department of Environment monitors air quality using costly continuous air quality monitoring stations (CAQMs) installed at fixed locations of highly populated and industrial areas. The objective of this paper is to develop a portable air quality measurement system which can measure particulate matters (PM) smaller than 10 and 2.5 microns, and four hazardous gasses, including carbon monoxide, sulphur dioxide, ground level ozone and nitrogen dioxide, as well as humidity and temperature. Six sensors were used and validated using several rigorous experiments. The functionality of the system was evaluated by measuring sub-API readings in areas with low and high traffic volumes. Experimental results showed that the proposed system was highly responsive and able to detect the types and concentrations of air pollutants instantly. Furthermore, equipped with the mobile internet, geo-tagged GPS location and web server on Raspberry Pi, the developed portable system could be accessed remotely.
Radiation Characteristics of Guided and Leaky modes for a Plasma Column Antenna Bo Yin
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 1: January 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

 A substantial problem for the radiation of a plasma column antenna is investigated. By means of the study on electromagnetic (EM) waves propagating along the plasma column and acting with plasma, it is found that a plasma column can radiate the EM energy when it works as two kinds of operation modes. The first one is a guided mode which leads to a surface current radiation, and its operation condition is obtained by determining the relation of plasma frequency and signal frequency. The second one is a leaky mode which causes a leaky wave radiation, and its operation condition is presented by analyzing normalized complex propagation constant. With further dealing with the leaky mode, its far field is got by applying the Schelkunoff’s equivalence principle on the surface of the plasma column. Radiation patterns of two kinds of modes are presented in their respective operation frequency bands, and reveal the radiation properties of the plasma antenna. The presented results are very helpful for further investigation in the design and application of plasma column antennaDOI : http://dx.doi.org/10.11591/telkomnika.v12i1.3500
Determination of Unknown Parameters of Photovoltaic Module Using Genetic Algorithm I. M. Abdelqawee; Ayman Y. Yousef; Khaled M. Hasaneen; H. G. Hamed; Maged N. F. Nashed
Indonesian Journal of Electrical Engineering and Computer Science Vol 4, No 2: November 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v4.i2.pp271-278

Abstract

 In this paper, the unknown parameters of the photovoltaic (PV) module are determined using Genetic Algorithm (GA) method. This algorithm based on minimizing the absolute difference between the maximum power obtained from module datasheet and the maximum power obtained from the mathematical model of the PV module, at different operating conditions. This method does not need to initial values, so these parameters of the PV module are easily obtained with high accuracy. To validate the proposed method, the results obtained from it are compared with the experimental results obtained from the PV module datasheet for different operating conditions. The results obtained from the proposed model are found to be very close compared to the results given in the datasheet of the PV module.
Mixed Integer Linear Programming for Maintenance Scheduling in Power System Planning S.M. Hussin; M.Y. Hassan; L. Wu; M.P. Abdullah; N. Rosmin; M.A. Ahmad
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 2: August 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i2.pp607-613

Abstract

This paper discussed the merit of mixed-integer linear programming (MILP)-based approach against Lagrangian relaxation (LR)-based approach in solving generation and transmission maintenance scheduling problem. MILP provides a straightforward solution by formulating coupling constraints equations so that these sub-problems can be solved simultaneously without involving multipliers. In LR-based approach, generation and transmission maintenance scheduling, and security-constrained unit commitment have been solved individually and the integration was realized through a series of multipliers which has caused computational burden to the system. Numerical case studies were evaluated on the 6-bus system. A comparative study is carried out between the MILP and LR approaches. Simulation results indicate that the maintenance schedule derived by the proposed MILP approach outperforms the LR in terms of operational cost savings and gap tolerance. The operating cost could be saved up to 5% and the gap tolerance achieved is 0.01% as compared to 0.14% by LR.

Page 276 of 923 | Total Record : 9226

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