The contribution investigates the impact of frequency feature optimization on discriminating between movement-related EEG realisations associated with right shoulder elevation and right index finger flexion movements. Exhaustive search of subbands in the range from 5 to 45 Hz is performed. A classifier based on Hidden Markov Models is utilised. The results show a large variability of optimal settings among subjects and electrodes. Using subband optimization an average 3.5% increase in classification accuracy of EEG filtered using 8-neighbor Laplacian filter was achieved, reaching an overall score of 81.2±1.2%, individual improvements ranging from 1.2 to 9.9%. The best general setting common for all subject was confirmed as 5-40 Hz.
{"title":"Subband optimization for EEG-based classification of movements of the same limb","authors":"M. Dobias, J. Št'astný","doi":"10.1109/AE.2014.7011671","DOIUrl":"https://doi.org/10.1109/AE.2014.7011671","url":null,"abstract":"The contribution investigates the impact of frequency feature optimization on discriminating between movement-related EEG realisations associated with right shoulder elevation and right index finger flexion movements. Exhaustive search of subbands in the range from 5 to 45 Hz is performed. A classifier based on Hidden Markov Models is utilised. The results show a large variability of optimal settings among subjects and electrodes. Using subband optimization an average 3.5% increase in classification accuracy of EEG filtered using 8-neighbor Laplacian filter was achieved, reaching an overall score of 81.2±1.2%, individual improvements ranging from 1.2 to 9.9%. The best general setting common for all subject was confirmed as 5-40 Hz.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128800017","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}
This paper describes a embedded controller for the matrix converter. Thanks to its computing throughput it is suitable for university use, but it enables operation in the whole industrial rage thank to its construction. Besides the example usage in matrix converter, the control system is generally usable for various control tasks.
{"title":"Universal embedded controller for matrix converter","authors":"J. Bauer, P. Pošta, S. Fligl, J. Lettl","doi":"10.1109/AE.2014.7011659","DOIUrl":"https://doi.org/10.1109/AE.2014.7011659","url":null,"abstract":"This paper describes a embedded controller for the matrix converter. Thanks to its computing throughput it is suitable for university use, but it enables operation in the whole industrial rage thank to its construction. Besides the example usage in matrix converter, the control system is generally usable for various control tasks.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124560262","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}
Quadrature oscillator based on the operational transresistance amplifier (OTRA) is presented in this paper. The proposed quadrature oscillator circuit uses two OTRAs as main active building blocks and a few external passive components to generate the oscillations. The circuit provides independent control over the condition of oscillation and frequency of oscillation. A prototype circuit is implemented on a laboratory breadboard using commercially available current feedback operational amplifier ICs (AD844 AN) and passive components are connected externally and tested for waveform generation. Both the SPICE simulation and experimental results are given to verify the theoretical analysis.
{"title":"Quadrature oscillator using operational transresistance amplifier","authors":"C. Pittala, Avireni Srinivasulu","doi":"10.1109/AE.2014.7011681","DOIUrl":"https://doi.org/10.1109/AE.2014.7011681","url":null,"abstract":"Quadrature oscillator based on the operational transresistance amplifier (OTRA) is presented in this paper. The proposed quadrature oscillator circuit uses two OTRAs as main active building blocks and a few external passive components to generate the oscillations. The circuit provides independent control over the condition of oscillation and frequency of oscillation. A prototype circuit is implemented on a laboratory breadboard using commercially available current feedback operational amplifier ICs (AD844 AN) and passive components are connected externally and tested for waveform generation. Both the SPICE simulation and experimental results are given to verify the theoretical analysis.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120885942","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}
Kalman filters have gained immense research attention in robotics, throughout the last decades. Among the applications, localization of robots through Kalman filters proved promising results. This paper presents an application of sensor fusion for prediction of orientation and depth to wall/obstacle by fusing the inputs from three IR range finders. The experimental result demonstrates the capability of Kalman filter to predict the parameters precisely, from noisy sensor inputs. The technique find application in determining the position and orientation from wall which will be helpful in obstacle avoidance decision making, automatic parking of automobiles etc.
{"title":"Sensor fusion for prediction of orientation and position from obstacle using multiple IR sensors an approach based on Kalman filter","authors":"K. Rahul Sharma, Daniel Honc, F. Dušek","doi":"10.1109/AE.2014.7011716","DOIUrl":"https://doi.org/10.1109/AE.2014.7011716","url":null,"abstract":"Kalman filters have gained immense research attention in robotics, throughout the last decades. Among the applications, localization of robots through Kalman filters proved promising results. This paper presents an application of sensor fusion for prediction of orientation and depth to wall/obstacle by fusing the inputs from three IR range finders. The experimental result demonstrates the capability of Kalman filter to predict the parameters precisely, from noisy sensor inputs. The technique find application in determining the position and orientation from wall which will be helpful in obstacle avoidance decision making, automatic parking of automobiles etc.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131720658","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}
A pacemaker is a small electronic device implanted under the skin near the collarbone. Pacemakers monitor the heart's electrical activity. If the heart is beating too slowly or pausing too long between beats, the pacemaker will provide electrical impulses that stimulate the heart to beat. The pacemaker itself consists of a small box (the pulse generator) and one to three leads that are placed in the heart. This paper is devoted to signal processing, based on wavelets analysis and Hilbert-Huang transformation which enables to find hidden pacemaker electrical impulses in ECG (electro cardio graph signal). Results will be helpful for prolonging pacemaker battery life and reducing the stimuli pain on patients with implantable pacemaker.
{"title":"Hidden pacemaker pulses detection based on wavelet and Hilbert-Huang transform","authors":"M. Stork, V. Vancura","doi":"10.1109/AE.2014.7011721","DOIUrl":"https://doi.org/10.1109/AE.2014.7011721","url":null,"abstract":"A pacemaker is a small electronic device implanted under the skin near the collarbone. Pacemakers monitor the heart's electrical activity. If the heart is beating too slowly or pausing too long between beats, the pacemaker will provide electrical impulses that stimulate the heart to beat. The pacemaker itself consists of a small box (the pulse generator) and one to three leads that are placed in the heart. This paper is devoted to signal processing, based on wavelets analysis and Hilbert-Huang transformation which enables to find hidden pacemaker electrical impulses in ECG (electro cardio graph signal). Results will be helpful for prolonging pacemaker battery life and reducing the stimuli pain on patients with implantable pacemaker.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129164748","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}
The objective of this paper is to present a highly customizable wireless monitoring solution for monitoring of environment characteristics, to evaluate propagation characteristics of wireless signal in inhabited buildings and to discuss important aspects of wireless monitoring systems. We have designed home monitoring system that uses ZigBee wireless sensor network with 8-bit microcontrollers and OS Linux based gateway. User defined code can be added and new sensors can be connected to microcontroller's input/output ports. The evaluation of our design is presented together with results of measurements of ZigBee performance in 2.4 GHz wireless spectrum within a building.
{"title":"Wireless home monitoring system: Design and evaluation","authors":"Valeria Harvanova, T. Krajcovic","doi":"10.1109/AE.2014.7011678","DOIUrl":"https://doi.org/10.1109/AE.2014.7011678","url":null,"abstract":"The objective of this paper is to present a highly customizable wireless monitoring solution for monitoring of environment characteristics, to evaluate propagation characteristics of wireless signal in inhabited buildings and to discuss important aspects of wireless monitoring systems. We have designed home monitoring system that uses ZigBee wireless sensor network with 8-bit microcontrollers and OS Linux based gateway. User defined code can be added and new sensors can be connected to microcontroller's input/output ports. The evaluation of our design is presented together with results of measurements of ZigBee performance in 2.4 GHz wireless spectrum within a building.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131511240","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}
Optimal Pulse Width Modulation (OPWM) is an established technique to generate PWM waveforms with low base-band distortion. The technique requires fast PWM generator to minimize base-band distortion. The aim of this paper is to present a programmable PWM modulator optimized for high speed satisfying the OPWM technique demands. The PWM modulator stores pulse sequence data in an internal memory which is facilitated by SDRAM memory. The design was implemented on Register Transfer Level (RTL) using VHDL language. The design verification was conducted on both RTL and gate levels as well as tested on two development boards.
{"title":"Programmable PWM modulator optimized for high speed for OPWM test platform","authors":"J. Kubák, J. Stastný, P. Kujan","doi":"10.1109/AE.2014.7011690","DOIUrl":"https://doi.org/10.1109/AE.2014.7011690","url":null,"abstract":"Optimal Pulse Width Modulation (OPWM) is an established technique to generate PWM waveforms with low base-band distortion. The technique requires fast PWM generator to minimize base-band distortion. The aim of this paper is to present a programmable PWM modulator optimized for high speed satisfying the OPWM technique demands. The PWM modulator stores pulse sequence data in an internal memory which is facilitated by SDRAM memory. The design was implemented on Register Transfer Level (RTL) using VHDL language. The design verification was conducted on both RTL and gate levels as well as tested on two development boards.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128492781","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}
This paper aims at compensating the dead-time effects in the vector-controlled induction motor system. It is used a feed-forward approach for the fundamental compensation and a feedback loop with adaptive GM filter and PI controllers for a harmonic compensation. The simulation results demonstrate the effectiveness of the proposed compensation strategy.
{"title":"Dead-time compensation strategy with adaptive harmonic compensator","authors":"Buchta Ludek, Pohl Lukas","doi":"10.1109/AE.2014.7011668","DOIUrl":"https://doi.org/10.1109/AE.2014.7011668","url":null,"abstract":"This paper aims at compensating the dead-time effects in the vector-controlled induction motor system. It is used a feed-forward approach for the fundamental compensation and a feedback loop with adaptive GM filter and PI controllers for a harmonic compensation. The simulation results demonstrate the effectiveness of the proposed compensation strategy.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114687756","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}
This paper presents a high spectral quality voltage-controlled sinusoidal quadrature oscillator. The amplitude stabilization of the output signal is based on energy approach. Described voltage-controlled oscillator has potential applications phase locked loops in modulation, detection etc. Most of the sinusoidal oscillators available in open literature are suffering with same problem. The amplitude stabilization is based on output saturation or simple nonlinear circuit which leads to sine wave distortion and therefore generation of spurious spectral lines. So this paper describes new principle of amplitude stabilization based on energy approach and verifies the results by simulation.
{"title":"High spectral quality sinusoidal oscillator with energy based amplitude control","authors":"M. Stork, J. Hrusák, D. Mayer","doi":"10.1109/AE.2014.7011719","DOIUrl":"https://doi.org/10.1109/AE.2014.7011719","url":null,"abstract":"This paper presents a high spectral quality voltage-controlled sinusoidal quadrature oscillator. The amplitude stabilization of the output signal is based on energy approach. Described voltage-controlled oscillator has potential applications phase locked loops in modulation, detection etc. Most of the sinusoidal oscillators available in open literature are suffering with same problem. The amplitude stabilization is based on output saturation or simple nonlinear circuit which leads to sine wave distortion and therefore generation of spurious spectral lines. So this paper describes new principle of amplitude stabilization based on energy approach and verifies the results by simulation.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116566482","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}
High-resolution signal reconstruction from a set of its noisy low-resolution measurements is considered. As an alternative solution to this problem, a method employing the empirical mode decomposition (EMD) based denoising approach is proposed. In the framework of the proposed method, iterative EMD interval-thresholding based denoising procedure is applied to each noisy low-resolution measurement so as to filter the additive white Gaussian noise effect on it. We then synthesize the noise-reduced low-resolution signals to form the high-resolution signal. Unlike the method using the Wiener filter theory for high-resolution signal reconstruction, the proposed method does not require knowledge of any correlation information about the desired high-resolution signal and its low-resolution versions. The validity of the proposed method is demonstrated by an audio signal reconstruction application.
{"title":"Statistical multirate high-resolution signal reconstruction using the empirical mode decomposition based denoising approach","authors":"Adem Ukte, Aydin Kizilkaya, M. D. Elbi","doi":"10.1109/AE.2014.7011725","DOIUrl":"https://doi.org/10.1109/AE.2014.7011725","url":null,"abstract":"High-resolution signal reconstruction from a set of its noisy low-resolution measurements is considered. As an alternative solution to this problem, a method employing the empirical mode decomposition (EMD) based denoising approach is proposed. In the framework of the proposed method, iterative EMD interval-thresholding based denoising procedure is applied to each noisy low-resolution measurement so as to filter the additive white Gaussian noise effect on it. We then synthesize the noise-reduced low-resolution signals to form the high-resolution signal. Unlike the method using the Wiener filter theory for high-resolution signal reconstruction, the proposed method does not require knowledge of any correlation information about the desired high-resolution signal and its low-resolution versions. The validity of the proposed method is demonstrated by an audio signal reconstruction application.","PeriodicalId":149779,"journal":{"name":"2014 International Conference on Applied Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115487786","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}
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