发布求助
文献互助 智能选刊 最新文献

The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011最新文献

筛选
英文 中文
A low-voltage low-power CMOS weak inversion true rms-to-dc converter 一种低压低功耗CMOS弱反转真有效值-直流变换器
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947779
Pantre Kompitaya, K. Kaewdang
{"title":"A low-voltage low-power CMOS weak inversion true rms-to-dc converter","authors":"Pantre Kompitaya, K. Kaewdang","doi":"10.1109/ECTICON.2011.5947779","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947779","url":null,"abstract":"A true rms-to-dc converter based on the explicit computation technique is proposed in this paper. The design technique utilizes translinear principle circuit to realize current mode absolute-value, squarer, averaging and square root circuit. The circuit employs CMOS transistors operating in weak inversion region, and features very low power (>1uW), low supply voltage (0.8V) and wide input dynamic range (0.5nA to 500nA) with the error less than 2%. Simulation results by HSPICE show high performance of the circuit and confirm the validity of the proposed design technique.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125273038","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: 11
An anti-clipping protection system for multilevel class-D amplifier 一种多电平d类放大器的抗夹波保护系统
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947788
C. Lin, Bing-Shiun Hsieh
{"title":"An anti-clipping protection system for multilevel class-D amplifier","authors":"C. Lin, Bing-Shiun Hsieh","doi":"10.1109/ECTICON.2011.5947788","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947788","url":null,"abstract":"Class D amplifier is a popular device because of its high power delivery efficiency. However, during practical application, the “clipping” problem aggravates power loss and reduces reliability. We therefore present an anti-clipping protection system incorporated with proposed PWM-based multilevel class-D amplifier to enhance the audio quality and reliability. The multilevel technique consists of a time-division-adder and a multilevel converter to generate and deliver multilevel signal as stairway. In addition, the pulse density adjustment technique dynamically adjusts the power delivery according to the results of the anti-clipping detection circuit. Under the protection operation, experiments results show that the intensity and excessive heat of “clipping” will be greatly reduced over 25% and 40% which demonstrate the effectiveness of proposed scheme.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125525371","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: 4
Keyboard layout mismatch error detection and correction system utility 键盘布局不匹配错误检测和纠错系统实用程序
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947881
Chotiwat Chawannakul, S. Prasitjutrakul
{"title":"Keyboard layout mismatch error detection and correction system utility","authors":"Chotiwat Chawannakul, S. Prasitjutrakul","doi":"10.1109/ECTICON.2011.5947881","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947881","url":null,"abstract":"Typing with one language in mind where keyboard layout is set to another language is one of common typing errors. This paper presents data structures and algorithms of a utility program which automatically detects and corrects the mismatch Thai/English keyboard layout error during typing on the fly. The program hooks keyboard events and concurrently searches for closest-matched words in Thai and English dictionaries. The dictionaries are encoded using depth-limited tries for time and space efficiencies. Various heuristics are used to compute certainty level of error detection to minimize false correction. The program can handle typing with over 100 words per minute. It works effectively without noticeable system interruption.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125536040","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
The embedding of Thai in QR code 泰语在二维码中的嵌入
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947888
P. Makhapun, K. Sangthongpattana, S. Jantarapatin, C. Mitrpant
{"title":"The embedding of Thai in QR code","authors":"P. Makhapun, K. Sangthongpattana, S. Jantarapatin, C. Mitrpant","doi":"10.1109/ECTICON.2011.5947888","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947888","url":null,"abstract":"This paper proposes a new approach on a compression algorithm for encoding Thai words. The use of 13-bit binary codewords provides a new coding compatible with ISO/IEC 18004 in a similar fashion as Shift JIS. In addition, the new coding can be used as an extension of TIS620 in order to maintain interoperability with an existing Thai industrial standard. In our approach, the words are extracted by our words separation program to a basic unit of word components. Four domains of Thai words often found in a daily-life are statistically chosen here: news, product names, person names and addresses. The result shows that the use of 13 bit-codewords to represent these chosen words enables space saving of more than 20%","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114250220","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: 3
Design of a DSP controller and driver for the power-by-wire driving system with BLDC servo motor pump 无刷直流伺服电机泵线控驱动系统的DSP控制器和驱动器的设计
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947903
Jae-Hun Joo, Dong-hyun Kim, D. Sim, Jung-keyng Choi
{"title":"Design of a DSP controller and driver for the power-by-wire driving system with BLDC servo motor pump","authors":"Jae-Hun Joo, Dong-hyun Kim, D. Sim, Jung-keyng Choi","doi":"10.1109/ECTICON.2011.5947903","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947903","url":null,"abstract":"This paper presents a study on the DSP (Digital Signal Processor) controller for the PBW (power-by-wire) system using BLDC (Brushless Direct Current) servo motor pump. The PBW hydraulic actuator was realized with hydraulic pump driven by BLDC servo motor, hydraulic cylinder and controller. This PBW system needs speed control of servo motor for linear thrust action of hydraulic cylinder. This paper implements a servo controller with vector control algorithm and MIN-MAX PWM technique. As CPU of a controller, TMS320F2812 DSP was adopted because it has PWM waveform generator, A/D converter, SPI (Serial Peripheral Interface) port and many input/output port etc.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"265 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114470891","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: 3
Piecewise affine model and control of bicycle by gyroscopic stabilization 单车分段仿射模型及陀螺稳定控制
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947897
S. Suntharasantic, M. Wongsaisuwan
{"title":"Piecewise affine model and control of bicycle by gyroscopic stabilization","authors":"S. Suntharasantic, M. Wongsaisuwan","doi":"10.1109/ECTICON.2011.5947897","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947897","url":null,"abstract":"This paper considers the naturally unstable unmanned bicycle system at constant forward and rotational speeds. The bicycle is attached with a gyroscopic flywheel acting as an actuator for roll angle stabilization. The nonlinear model of the system is approximated by piecewise affine functions which minimizes the model error even outside the operating regions. The controller synthesis problem is cast as Linear Matrix Inequalities problem. The feasible control law is derived based on quadratic Lyapunov function to guarantee the system stability for all regions. The simulation confirms the effectiveness of this approach.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128473991","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: 9
Battery management system for series-hybrid electric shuttle bus 串联混合动力穿梭巴士电池管理系统
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947922
Teerayut Piboonrujananon, N. Fuengwarodsakul
{"title":"Battery management system for series-hybrid electric shuttle bus","authors":"Teerayut Piboonrujananon, N. Fuengwarodsakul","doi":"10.1109/ECTICON.2011.5947922","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947922","url":null,"abstract":"In this paper, a battery management system (BMS) of a lead-acid battery pack for a series hybrid electric vehicle (SHEV) shuttle bus is presented. The BMS is a necessary component for an optimal operation of power-train in the SHEV shuttle bus including for timely detection of an abnormal condition during charging and discharging the battery pack. The presented BMS consists of a central management unit (transmitter) and a user interface unit (receiver). The crucial indicator of the present state of the battery is the state-of-charge (SOC). The function test of the BMS is concentrated on the control of the generator-set under consideration of the state-of-charge which is determined by the open-circuit method combined with the coulomb counting method. The accuracy of the SOC determination was verified by the comparison with the specific gravity method.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128653677","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
Structural and optical characterizations of n-type doped ZnO by sol-gel method for photovoltaic 溶胶-凝胶法制备光伏用n型掺杂ZnO的结构和光学表征
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947768
P. Krongarrom, S. Rattanachan, T. Fangsuwannarak
{"title":"Structural and optical characterizations of n-type doped ZnO by sol-gel method for photovoltaic","authors":"P. Krongarrom, S. Rattanachan, T. Fangsuwannarak","doi":"10.1109/ECTICON.2011.5947768","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947768","url":null,"abstract":"This paper presents the effect of Bi doping concentration and annealing temperature on structural and optical properties of zinc oxide thin films. The samples in this study were prepared by sol-gel technique. These thin films were characterized by X-ray diffractometer technique. XRD analysis revealed that the Bi-doped thin films after annealing indicated good preferential orientation along c-axis perpendicular to the substrate, in particular very low concentration of Bi dopant. As a result, it indicated that Bi atoms acting as donor impurities can be in phase of ZnO. The surface morphology was characterized by using SEM (Scanning Electron Microscope). The visible region was measured by UV-VIS spectrophotometer. Finally, the optical band gap of undoped and Bi-doped ZnO thin films were obtained by the Tauc plot. Varying the Bi doped in the range of 0.2–0.6 at.% under annealing temperature at 600 °C caused a no significant change in optical band gap. In contrast, the annealing procedure produced significant changes from 3.27eV to 3.32eV in the optical band gap in order to higher blue responsibility for photovoltaic.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129430910","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: 5
Application of power system stabilizer to enhance dynamic performance of Siahbisheh pumped-storage power plant in Iran 电力系统稳定器在提高伊朗Siahbisheh抽水蓄能电站动态性能中的应用
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947958
Seyed Amidedin Mousavi, M. Bigdeli, M. Khatibi
{"title":"Application of power system stabilizer to enhance dynamic performance of Siahbisheh pumped-storage power plant in Iran","authors":"Seyed Amidedin Mousavi, M. Bigdeli, M. Khatibi","doi":"10.1109/ECTICON.2011.5947958","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947958","url":null,"abstract":"It is the purpose of this paper to investigate the design of a stabilizer via sampling the speed and voltage feedback in order to improve the oscillations of generators in Siahbisheh pumped-storage power plant in Iran. An overall PSS is utilized for all of the generators and its output is connected separately to the generators excitation systems. Moreover, a terminal voltage feedback is employed for damping oscillations. Comparing the simulation results shows a considerable improvement in the oscillations of the rotor speed, generator power, and terminal voltage. The proposed method is feasible and cost effective.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129093579","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: 0
Increasing bandwidth of flambeau-shape monopole antenna for UWB application 在超宽带应用中增加火焰型单极天线的带宽
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947800
W. Naktong, A. Ruengwaree
{"title":"Increasing bandwidth of flambeau-shape monopole antenna for UWB application","authors":"W. Naktong, A. Ruengwaree","doi":"10.1109/ECTICON.2011.5947800","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947800","url":null,"abstract":"This article presents the increasing bandwidth of a flambeau-shaped monopole antenna for UWB application. The prototype antenna has small size of about 38 × 45 mm2 and fabricated on a simple FR-4 PCB with a CPW-fed structure. This antenna is supported UWB (Ultra-wideband) applications as required by the Federal Communications Commission (FCC) with the frequency range of about 3.1–10.6 GHz, covering of IEEE 802.15.3a and also IEEE 802.16a standards. The structural simulation technique was used to analyze the antenna characteristics, utilizing the commercial software Computer Simulation Technology (CST). The measured input impedance bandwidth (return loss < −10 dB) of the prototype antenna was 162.52% for the frequency range of about 2.49 – 24.09 GHz. The radiation patterns were bidirectional along the proposed frequency band.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130655990","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: 4
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书