2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME)最新文献

Programmable hybrid electric system with low electromagnetic emissions 具有低电磁发射的可编程混合电力系统

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384355

B. Mihailescu, P. Svasta, A. Vasile

引用次数: 0

Spherical coordinates control system for accurate orientation of directional antennas 用于定向天线精确定向的球坐标控制系统

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384382

I. Lita, D. Visan

{"title":"Spherical coordinates control system for accurate orientation of directional antennas","authors":"I. Lita, D. Visan","doi":"10.1109/SIITME.2012.6384382","DOIUrl":"https://doi.org/10.1109/SIITME.2012.6384382","url":null,"abstract":"In this paper is presented a novel implementation of a spherical coordinates control system intended to be used for dynamic orientation of communication antennas. The proposed control system is composed by three electronic modules: the interface with the computer, the motor drivers and the stepper motors with mechanical elements for antenna orientation. The control algorithm is implemented as a LabVIEW software application that runs on the computer and sends periodic commands to the external modules. The connection between the external modules and the computer is realized through the parallel port. Also, the interface of the external modules ensures galvanic insulation for proper protection of the computer. In the presented implementation an angular resolution of 3,25 degrees was obtained using half-step command of motors but the accuracy can be easy improved with minor changes in hardware and software structure of the system. By programming the control application using LabVIEW environment are obtained important advantages as: intuitive interface for the user, modularity of the program, simple implementation, and flexibility in developing new features for the proposed system.","PeriodicalId":273985,"journal":{"name":"2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123316174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mechanical test for vapor phase solder joint 气相焊点力学试验

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384401

Georgiana Ionela PADURARU, A. Tudor, S. Cananau, I. Plotog, G. Vărzaru

引用次数: 1

Solder paste optimization in thermal pad padstack 热焊堆焊膏优化

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384360

I. Damian, C. Branescu, V. Soare

引用次数: 1

Resonance in power converters circuits 功率变换器电路中的共振

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384372

I. Baciu, S. Lungu

{"title":"Resonance in power converters circuits","authors":"I. Baciu, S. Lungu","doi":"10.1109/SIITME.2012.6384372","DOIUrl":"https://doi.org/10.1109/SIITME.2012.6384372","url":null,"abstract":"The story about resonant circuits it's important for understanding the operation behavior of resonant power converter. The aim of this study is to made the student's to understand how can they apply mathematics relations in study of this phenomenon and to know how we can apply it in power supply circuits. For the resonance we must have at least two reactive components. One of these components is a capacitor and another is an inductor. The difference between them is the phase angle between current and voltage. The most important thing is to put in evidence, in situation of resonance, the minimum impedance of equivalent circuit, the angle phase zero between voltage and current and the current and voltage sinusoidal shape. If we apply this circuit in a power converter supply and if we make an analysis about this the conclusion which we obtain is about the frequency of stimulation signal. To eliminate the multiple commutations we must have an equal or bigger commutation frequency like resonant frequency. For this paper I realize to a simple application in Matlab to compute the frequency of equivalent circuit and to simulate Buck converter with ZVS commutation and ZCS commutation.","PeriodicalId":273985,"journal":{"name":"2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130647252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Surface temperature measurement with thermocouple matrix using a switch control unit 表面温度测量与热电偶矩阵使用开关控制单元

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384393

R. Szabó, A. Gontean, I. Lie

引用次数: 2

Effects of technological parameters onto OTFTs' electrical performance 工艺参数对otft电性能的影响

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384349

A. Bonea, T. Hassinen, A. Vasile, P. Svasta

引用次数: 0

Application of particle filter algorithms in an accurate and reliable localization and tracking of WSN's mobile devices 粒子滤波算法在无线传感器网络移动设备精确可靠定位与跟踪中的应用

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384403

D. Zevedei, M. Jurian, A. Scutariu

引用次数: 3

Inertial navigation modular system 惯性导航模块系统

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384389

S. Sebastian, L. Claudiu, O. Ioan

引用次数: 1

Thermal analysis of thin film transistor liquid crystal display (TFT-LCD) TV panels with single sided LED bars 单面LED条的薄膜晶体管液晶显示(TFT-LCD)电视面板的热分析

2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME) Pub Date : 2012-12-24 DOI: 10.1109/SIITME.2012.6384343

I. Tavman, A. Turgut, M. Iz

{"title":"Thermal analysis of thin film transistor liquid crystal display (TFT-LCD) TV panels with single sided LED bars","authors":"I. Tavman, A. Turgut, M. Iz","doi":"10.1109/SIITME.2012.6384343","DOIUrl":"https://doi.org/10.1109/SIITME.2012.6384343","url":null,"abstract":"In this research thermal and fluid fields of a 32-inch commercial thin film transistor liquid crystal display (TFT-LCD) TV panel were investigated numerically and experimentally. The new trend in the production of TFT-LCD, TV panel is to have slimmer screen displays. The original design with 180 LEDs (light emitting diodes) placed at the top and bottom edges of the panels was modified. In the new design, the panels were illuminated using only 72 LEDs placed underside and inside the panels. By this modification an important cost reduction has been achieved alongside having slimmer screen displays. Heat dissipated by these 72 LEDs must be removed in order to assure good image quality and long service life. Hence an appropriate thermal management is indispensable. To analyze temperature distribution at steady state condition a CFD (computational fluid dynamics) computer code “FloEFD” was used. The results obtained from the computational analysis have been validated by using experimental techniques. For this purpose thermocouples were attached on the panel and after the steady state has been reached, temperatures have been recorded in order to compare them to the distribution obtained by “FloEFD”. Furthermore, a thermal camera image of the panel by FLIR Thermacam SC2000 test device was obtained as another validation for temperature distribution.","PeriodicalId":273985,"journal":{"name":"2012 IEEE 18th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131014725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6