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2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)最新文献

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Application of a two-phase interleaved step-up converter for photovoltaic power maximization 两相交错升压变换器在光伏发电功率最大化中的应用
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408962
Adirek Buakam, N. Jantharamin
{"title":"Application of a two-phase interleaved step-up converter for photovoltaic power maximization","authors":"Adirek Buakam, N. Jantharamin","doi":"10.1109/ICITEED.2015.7408962","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408962","url":null,"abstract":"This paper describes an analysis of a two-phase interleaved step-up converter and its application in maximum power point tracking (MPPT) for photovoltaic (PV) panel. The transient as well as steady-state characteristics of the interleaved converter were analyzed by using state-space averaging technique. A two-phase interleaved step-up converter was then constructed and implemented to keep maximizing the PV output power in spite of irradiance changes. Compared to the single-phase topology the input current ripple was reduced by about 35% and the load voltage ripple was reduced by about 50%.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122801833","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
Gain scheduled control for active magnetic bearing system considering gyroscopic effect 考虑陀螺效应的主动磁轴承系统增益调度控制
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7409009
Akio Sanbayashi, Masanori Narita, Gan Chen, I. Takami
{"title":"Gain scheduled control for active magnetic bearing system considering gyroscopic effect","authors":"Akio Sanbayashi, Masanori Narita, Gan Chen, I. Takami","doi":"10.1109/ICITEED.2015.7409009","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7409009","url":null,"abstract":"This paper proposes gain scheduled (GS) control for an active magnetic bearing (AMB) system. The system levitates and supports a rotor without contact. The AMB is unstable and strongly nonlinear due to characteristics of the magnetic levitation. Furthermore, gyroscopic effect occurs corresponding to the rotational speed and the moment of inertia of the rotor. Thus, the AMB system tends to be unstable by the gyroscopic effect. The rotational speed is not fixed but variable in actual operation. It is treated as a time-varying parameter. The moment of inertia does not changed in operation but different by situations. It is treated as an uncertain time-invariant parameter. The robust stability for the uncertain parameters in the rotational speed and the moment of inertia is guaranteed by using polytopic representation. Linear fractional transformation (LFT) is applied to design the GS controller via parameter dependent Lyapunov function. The problem of designing the GS controller can be formulated as solving a finite set of linear matrix inequality (LMI) conditions. The effectiveness of the proposed method is illustrated by simulations.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127661452","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
Front-end interfacing circuit for capacitive sensor 电容式传感器前端接口电路
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408963
Akira Ota, W. Petchmaneelumka, T. Cheypoca, A. Rerkratn, V. Riewruja
{"title":"Front-end interfacing circuit for capacitive sensor","authors":"Akira Ota, W. Petchmaneelumka, T. Cheypoca, A. Rerkratn, V. Riewruja","doi":"10.1109/ICITEED.2015.7408963","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408963","url":null,"abstract":"This paper presents an interfacing circuit for capacitive sensor using charge amplifier formed a capacitance-to-voltage converter. The proposed circuit is suitable for the front-end analog-to-digital converter (ADC) and wide variable range of sensing capacitance. The achieved output voltage provides a linear transfer characteristic and fast response. The circuit configuration is implemented using only commercially available devices. The performances of proposed circuit are confirmed by experimental results.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123600009","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
Single VDCC-based current-mode universal biquadratic filter 基于直流电流型通用双二次型滤波器
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408926
P. Lamun, P. Phatsornsiri, U. Torteanchai
{"title":"Single VDCC-based current-mode universal biquadratic filter","authors":"P. Lamun, P. Phatsornsiri, U. Torteanchai","doi":"10.1109/ICITEED.2015.7408926","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408926","url":null,"abstract":"This paper presents a novel three-input single-output current-mode universal biquadratic filter using only one voltage differencing current conveyor (VDCC) and three grounded passive components. The proposed circuit can realize low-pass (LP), band-pass (BP), high-pass (HP), band-stop (BS), and all-pass (AP) biquadratic functions. The natural angular frequency (ωo) and the quality factor (Q) can be tuned orthogonally by varying the circuit components. The proposed configuration has a low component count, low active and passive sensitivities and suitability to be integrated circuit implementation. PSPICE simulation results using TSMC 0.18 μm CMOS process parameters are included, which show good agreement with the theoretical predictions.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126294965","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: 15
sEMG signal classification using SMO algorithm and singular value decomposition 表面肌电信号分类采用SMO算法和奇异值分解
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408910
Yotsapat Ruangpaisarn, S. Jaiyen
{"title":"sEMG signal classification using SMO algorithm and singular value decomposition","authors":"Yotsapat Ruangpaisarn, S. Jaiyen","doi":"10.1109/ICITEED.2015.7408910","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408910","url":null,"abstract":"Surface Electromyography (sEMG) signal analysis is a challenging task in neuroscience. The signal is associated with an activity of muscles in Human body. It is a part of how human can control the robotic arm for helping people with disabilities. In this paper, we propose a new method based on Singular Value Decomposition (SVD) and SMO algorithm for classifying sEMG signals into six basic hand movements. By this proposed method, SVD is adopted for feature extraction and SMO classifier is used for classifying sEMG signals into six classes of basic hand movements in five subjects. In preliminary experiment, we investigates the number of features that can yield the best performance in the classification and it is found that the optimal number of features is 50. For performance evaluation, five classifiers including Decision Tree, K-nearest neighbor, Naive Bayes, RBF, and SMO, with 10 fold cross-validation technique are adopted. The experimental results have shown that SMO algorithm with V2M-SVD feature extraction can achieve the best performance for the classification of basic hand movements.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128687926","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: 14
Acceleration of scan-based on-chip delay measurement using extra latches and multiple asynchronous transfer scan chains 利用额外锁存器和多个异步传输扫描链加速基于扫描的片上延迟测量
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7409001
K. Kato, S. Choomchuay
{"title":"Acceleration of scan-based on-chip delay measurement using extra latches and multiple asynchronous transfer scan chains","authors":"K. Kato, S. Choomchuay","doi":"10.1109/ICITEED.2015.7409001","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7409001","url":null,"abstract":"This paper presents a fast scan-based on-chip delay measurement with variable clock generator using extra latches and multiple asynchronous transfer scan chains. Usual scan-based on-chip delay measurement requires continuous scan-in operation for assigning the identical test vectors and continuous scan-out operations for transferring the identical test responses, both of which result in long measurement time. By using the proposed asynchronous multiple scan chains with some extra latches, the proposed delay measurement system can reduce the measurement time considerably. the identical test responses using the proposed asynchronous multiple scan chanins as well as using the extra latches. The pulse width modification circuits are inserted to the asynchronous transfer scan path for robust asynchronous transfer. The simulation results show that the measurement time of the proposed method is 30.8 % of the conventional one under the condition that the length of scan chains is 64.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121856786","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
A comparison of feature selection approach between greedy, IG-ratio, Chi-square, and mRMR in educational mining 教育挖掘中贪心、IG-ratio、卡方和mRMR特征选择方法的比较
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408983
Nachirat Rachburee, Wattana Punlumjeak
{"title":"A comparison of feature selection approach between greedy, IG-ratio, Chi-square, and mRMR in educational mining","authors":"Nachirat Rachburee, Wattana Punlumjeak","doi":"10.1109/ICITEED.2015.7408983","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408983","url":null,"abstract":"Educational data mining is a widely interesting issue in data mining research field. One of the topics is feature selection method to reduce a feature set. The main purpose of this study is to compare feature selection methods for the efficiency of student performance prediction improvement. In this research, we proposed 4 feature selection methods: greedy algorithm, Information gain ratio, chi-square, and mRMR that combine with 4 classification models. The example data were 6,882 engineering students in Rajamangala University of Technology Thanyaburi, Thailand from year 2004 to 2010. The experiments demonstrate the effectiveness of the feature selection method in classification of student performance prediction. The result shows that greedy forward selection with neural network classification model presents the best efficiency couple with 91.16% accuracy.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116329119","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: 46
VDBA-based floating inductance simulator with a grounded capacitor 基于vdba的带有接地电容的浮动电感模拟器
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408924
O. Channumsin, Jirapun Pimpol, C. Thongsopa, W. Tangsrirat
{"title":"VDBA-based floating inductance simulator with a grounded capacitor","authors":"O. Channumsin, Jirapun Pimpol, C. Thongsopa, W. Tangsrirat","doi":"10.1109/ICITEED.2015.7408924","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408924","url":null,"abstract":"This study presents the resistorless floating inductance simulator circuit based on employing voltage differencing buffered amplifier (VDBA) as new active component. The proposed floating inductance simulator circuit uses two VDBAs and only one grounded capacitor, which is suitable for integrated circuit design. The resulting equivalent inductance value of the proposed simulator can be tuned electronically through the transconductance parameter of the VDBA. As application example, the second-order RLC bandpass filter has been simulated using the proposed tunable floating inductance simulator. The simulation results using standard 0.35 μm BiCMOS process model are included to verify the theoretical analysis.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125477313","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: 7
Sinusoidal quadrature oscillator using voltage differencing gain amplifiers (VDGAs) 采用电压差分增益放大器(VDGAs)的正弦正交振荡器
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408925
O. Channumsin, W. Tangsrirat
{"title":"Sinusoidal quadrature oscillator using voltage differencing gain amplifiers (VDGAs)","authors":"O. Channumsin, W. Tangsrirat","doi":"10.1109/ICITEED.2015.7408925","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408925","url":null,"abstract":"An alternative topology of voltage-mode sinusoidal quadrature oscillator based on VDGA (voltage differencing gain amplifier) is proposed. The proposed quadrature oscillator consisting of two VDGAs and two grounded capacitors with the absence of the external passive resistors can generate two sinusoidal output voltages with 90° phase difference. The oscillation condition and oscillation frequency (ωo) of the circuit are controllable independently through the transconductance gains of the VDGAs. Moreover, the proposed circuit configuration requires minimum of active and passive components, and also exhibits low sensitivity performance. Computer simulation results using PSPICE are performed to confirm the theory.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127918622","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
Pilot-aided double-dwell frequency synchronization in OFDM systems OFDM系统中导频辅助双驻留频率同步
2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI: 10.1109/ICITEED.2015.7408995
Nour Kousa, M. El-Tarhuni
{"title":"Pilot-aided double-dwell frequency synchronization in OFDM systems","authors":"Nour Kousa, M. El-Tarhuni","doi":"10.1109/ICITEED.2015.7408995","DOIUrl":"https://doi.org/10.1109/ICITEED.2015.7408995","url":null,"abstract":"In this paper, a pilot-aided frequency synchronization scheme for orthogonal frequency division multiplexing (OFDM) systems is proposed. A maximum likelihood (ML) estimator based on Double Dwell Synchronization (DDS) is employed for offset estimation and correction. The proposed DDS scheme provides an accurate estimate over a wide estimation range with reduced computational complexity for both AWGN and Rayleigh fading channels. The number of pilot subcarriers as well as the type of used pilot sequence are investigated to improve the system performance. Simulation results show that the proposed DDS provides a reduction of about 3 dB in the required signal-to-noise ratio as the number of pilots is doubled. It is also shown that the DDS approaches the Cramer-Rao Bound (CRB) for systems with large number of subcarriers. Finally, it is shown that for flat fading conditions, using an m-sequence as a pilot sequence provides better performance over complex-valued random or real-valued antipodal sequences.","PeriodicalId":207985,"journal":{"name":"2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129195389","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
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