Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021128
Wei Ma, M. Le, K. Jo
This paper implements a study of 3D reconstruction and measurement of indoor objects using binocular stereo camera. First, SIFT feature are extracted from both images and the matching points are found. RANSAC method is applied to eliminate wrong matching points. Second, two stereo images are rectified and generated disparity mapping. Finally, the depth mapping and 3D information of each pixel are derived. This method is applied to reconstruct and measure the true object in indoor environment.
{"title":"3D reconstruction and measurement of indoor object using stereo camera","authors":"Wei Ma, M. Le, K. Jo","doi":"10.1109/IFOST.2011.6021128","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021128","url":null,"abstract":"This paper implements a study of 3D reconstruction and measurement of indoor objects using binocular stereo camera. First, SIFT feature are extracted from both images and the matching points are found. RANSAC method is applied to eliminate wrong matching points. Second, two stereo images are rectified and generated disparity mapping. Finally, the depth mapping and 3D information of each pixel are derived. This method is applied to reconstruct and measure the true object in indoor environment.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"1 1","pages":"738-742"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75945139","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021082
J. Yingying, W. Xudong, Mao LiangLiang, Yan ShuCai, Zhang Haixing
Comparing with commonly used sine-wave pulse-width modulation(SPWM) method, Space Vector Pulse Width Modulation (SVPWM) method has higher utilization rate of DC voltage and smaller output waveform distortion. This article introduced SVPWM control technology into three-phase grid-connected inverter, created a main circuit mathematical model of three-phase grid-connected inverter and detailed the implementation of SVPWM modulation method with Matlab software. Through the establishment of a complete closed-loop system to simulate and research, giving the simulation waveforms and output grid-connected current waveform. The simulation results showed the advantages of SVPWM technique are more suitable for high-power applications.
{"title":"Application and Simulation of SVPWM in three phase inverter","authors":"J. Yingying, W. Xudong, Mao LiangLiang, Yan ShuCai, Zhang Haixing","doi":"10.1109/IFOST.2011.6021082","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021082","url":null,"abstract":"Comparing with commonly used sine-wave pulse-width modulation(SPWM) method, Space Vector Pulse Width Modulation (SVPWM) method has higher utilization rate of DC voltage and smaller output waveform distortion. This article introduced SVPWM control technology into three-phase grid-connected inverter, created a main circuit mathematical model of three-phase grid-connected inverter and detailed the implementation of SVPWM modulation method with Matlab software. Through the establishment of a complete closed-loop system to simulate and research, giving the simulation waveforms and output grid-connected current waveform. The simulation results showed the advantages of SVPWM technique are more suitable for high-power applications.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"6 1","pages":"541-544"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80181274","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021146
Zhen Zhou, Jie Wang, Y. Qin
The impedance method detection of milk bacteria requires a high quality signal. In order to meet the requirement, a complete signal conditioning circuit is designed and analysised in this paper. Firstly, Biological signals can be reflected in form of electrical signals by impendance sensor. Secondly, In order to detect weak signals in noises. I have designed Preamplifier circuit, Low-pass filter amplifier circuit, Modulate and Demodulate Circuits. At last, Mathematical models are established after comparison test and the theory analysis. Experimental results show that the signal conditioning circuit can effectively improve SNR, and the sensor output signal can be amplified between 0 and 5V. The system can provide reliable signals for upper computer and display system.
{"title":"Design of signal conditioning circuits for impedance detection of milk bacteria","authors":"Zhen Zhou, Jie Wang, Y. Qin","doi":"10.1109/IFOST.2011.6021146","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021146","url":null,"abstract":"The impedance method detection of milk bacteria requires a high quality signal. In order to meet the requirement, a complete signal conditioning circuit is designed and analysised in this paper. Firstly, Biological signals can be reflected in form of electrical signals by impendance sensor. Secondly, In order to detect weak signals in noises. I have designed Preamplifier circuit, Low-pass filter amplifier circuit, Modulate and Demodulate Circuits. At last, Mathematical models are established after comparison test and the theory analysis. Experimental results show that the signal conditioning circuit can effectively improve SNR, and the sensor output signal can be amplified between 0 and 5V. The system can provide reliable signals for upper computer and display system.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"27 1","pages":"818-821"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79690036","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6020962
G. V. Shuvalov, I. Klekovkin, A. Ilyin, L.O. Root, A. Korshunov, O. Nazarenko, D. Tikhonov
The four parameters of chemical activity are proposed in the paper for testing of metal nanopowders and their mixtures stability to oxidation and chemical interaction. For estimation the thermodynamic conditions of the “metal nanopowder-gas” systems it is suggested to investigate their electrochemical characteristics.
{"title":"Scientific research on nanopowders diagnostics","authors":"G. V. Shuvalov, I. Klekovkin, A. Ilyin, L.O. Root, A. Korshunov, O. Nazarenko, D. Tikhonov","doi":"10.1109/IFOST.2011.6020962","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6020962","url":null,"abstract":"The four parameters of chemical activity are proposed in the paper for testing of metal nanopowders and their mixtures stability to oxidation and chemical interaction. For estimation the thermodynamic conditions of the “metal nanopowder-gas” systems it is suggested to investigate their electrochemical characteristics.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"20 1","pages":"49-51"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81915780","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021121
Jiazhong Xu, Ming Qiao, Wei Wang, Yanan Miao
Friction is the key factor influencing high precision and super low-speed running performance of AC servo system. In order to factually simulate the influence of friction on AC servo system, three-loop nonlinear model of industry AC servo motor including measured Stribeck friction disturbance factors is established. The control performance of position loop is simulated and studied by adopting traditional PID and fuzzy PID. The results show that Stribeck friction can lead to “flat top” of position tracking and “dead zone” of speed tracking adopting traditional PID, while fuzzy PID decreases the influence of friction on servo system performance and improves tracking precision and robust performance of the system.
{"title":"Fuzzy PID control for AC servo system based on Stribeck friction model","authors":"Jiazhong Xu, Ming Qiao, Wei Wang, Yanan Miao","doi":"10.1109/IFOST.2011.6021121","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021121","url":null,"abstract":"Friction is the key factor influencing high precision and super low-speed running performance of AC servo system. In order to factually simulate the influence of friction on AC servo system, three-loop nonlinear model of industry AC servo motor including measured Stribeck friction disturbance factors is established. The control performance of position loop is simulated and studied by adopting traditional PID and fuzzy PID. The results show that Stribeck friction can lead to “flat top” of position tracking and “dead zone” of speed tracking adopting traditional PID, while fuzzy PID decreases the influence of friction on servo system performance and improves tracking precision and robust performance of the system.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"52 1","pages":"706-711"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82030109","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6020970
Junguo Gao, Lili Li, N. Guo, Wei Wang, Xiaohong Zhang
The power cable is an important component in the power system, and crosslinked polyethylene is widely applied to power cables, electrical tree of XLPE is a troubled one of the reasons widely used XLPE. In the paper crosslinked polyethylene/montmorillonite composites were prepared by peroxide crosslinking method and melting intercalation process, and the processes of electrical tree in initiation and growth were studied by the test system of electrical tree. The results showed when the montmorillonite (MMT) content was the same; the electrical trees induced rate of XLPE/18-MMT-3 is lowest. It showed that montmorillonites treated with different modifiers were impact on property of resisting electrical tree. The property of resisting electrical tree in XLPE/MMT composites was the best, when MMT content was 1%, and that property of resisting electrical tree was improved, when the content of MMT was appropriate.
{"title":"Investigation on property of electrical tree in crosslinked polyethylene/montmorillonite composites","authors":"Junguo Gao, Lili Li, N. Guo, Wei Wang, Xiaohong Zhang","doi":"10.1109/IFOST.2011.6020970","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6020970","url":null,"abstract":"The power cable is an important component in the power system, and crosslinked polyethylene is widely applied to power cables, electrical tree of XLPE is a troubled one of the reasons widely used XLPE. In the paper crosslinked polyethylene/montmorillonite composites were prepared by peroxide crosslinking method and melting intercalation process, and the processes of electrical tree in initiation and growth were studied by the test system of electrical tree. The results showed when the montmorillonite (MMT) content was the same; the electrical trees induced rate of XLPE/18-MMT-3 is lowest. It showed that montmorillonites treated with different modifiers were impact on property of resisting electrical tree. The property of resisting electrical tree in XLPE/MMT composites was the best, when MMT content was 1%, and that property of resisting electrical tree was improved, when the content of MMT was appropriate.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"328 1","pages":"76-79"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83125107","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021244
C. Shi, Huiming Wang, Fancheng Yin
This paper models the monthly rainfall series by SARIMA and spectrum methods. The hidden periodicities of unspecified frequency are resolved by periodogram, Fisher's test and Kolmogorov-Simirnov test. Then the presence of a non-sinusoidal periodic component with specified integer-value period is confirmed. For comparison, SARIMA models are also established for prediction.
{"title":"Monthly rainfall forecasting model with hidden periodicities","authors":"C. Shi, Huiming Wang, Fancheng Yin","doi":"10.1109/IFOST.2011.6021244","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021244","url":null,"abstract":"This paper models the monthly rainfall series by SARIMA and spectrum methods. The hidden periodicities of unspecified frequency are resolved by periodogram, Fisher's test and Kolmogorov-Simirnov test. Then the presence of a non-sinusoidal periodic component with specified integer-value period is confirmed. For comparison, SARIMA models are also established for prediction.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"286 1","pages":"1239-1242"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82836759","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021258
D. Zheng, Zhong-lin Zhang, Shijie Zhu, Xiuquan Zhai, Dawei Zhao
in this paper, the short gap discharge of electrode coverage was simulated numerically. The one dimensional and self-consistent fluid model of gas discharge was established which is composed by the electron and ion continuity and momentum transfer equations, and the nonlinear equations were solved by using the SG algorithm. The results showed that the short gap discharge of electrode coverage behaves the typical nonlinear characteristic such as Hopf bifurcation and Chaos. Two ways leading to Chaos have been found by changing discharge conditions, one is quasi-period and the other is double-period. Seemingly random discharge may reveal the hidden simple laws, through studying nonlinear phenomena of the short gap discharge of electrode coverage, especially the phenomena of Chaos to find out the common law, which is generally followed by complex issues.
{"title":"Chaos evolution of short-gap discharge under dielectric-covered electrodes","authors":"D. Zheng, Zhong-lin Zhang, Shijie Zhu, Xiuquan Zhai, Dawei Zhao","doi":"10.1109/IFOST.2011.6021258","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021258","url":null,"abstract":"in this paper, the short gap discharge of electrode coverage was simulated numerically. The one dimensional and self-consistent fluid model of gas discharge was established which is composed by the electron and ion continuity and momentum transfer equations, and the nonlinear equations were solved by using the SG algorithm. The results showed that the short gap discharge of electrode coverage behaves the typical nonlinear characteristic such as Hopf bifurcation and Chaos. Two ways leading to Chaos have been found by changing discharge conditions, one is quasi-period and the other is double-period. Seemingly random discharge may reveal the hidden simple laws, through studying nonlinear phenomena of the short gap discharge of electrode coverage, especially the phenomena of Chaos to find out the common law, which is generally followed by complex issues.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"19 1","pages":"1305-1309"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81005273","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021028
D. Sodnomdorj, M. Narantuya, S. Uuganbayar
In this report we studied methodology and algorithms of optimizing various matters of power system regime under fuzzy objective circumstances. We also developed fuzzy model of 6–10 kV distribution power network's estimated energy loss level and its fuzzy optimization issues.
{"title":"Optimization of power system regime under fuzzy (ambiguous) objective circumstances","authors":"D. Sodnomdorj, M. Narantuya, S. Uuganbayar","doi":"10.1109/IFOST.2011.6021028","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021028","url":null,"abstract":"In this report we studied methodology and algorithms of optimizing various matters of power system regime under fuzzy objective circumstances. We also developed fuzzy model of 6–10 kV distribution power network's estimated energy loss level and its fuzzy optimization issues.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"8 1","pages":"304-306"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87812973","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021167
Chen Baoyuan, Liu Ying, Yue Haibin, Z. Yongjian
In speech processing, Speech Endpoint Confirmation has a very important position. Sub-band average-energy and the variance of the wavelet coefficients are the common algorithms, the disadvantage of the former algorithm is the limitation of only suitable for Gaussian white noise environment, while the latter algorithm can't overcome the drawback in Time-consuming, bad real-time. According to these problems, this paper puts forward optimization algorithm combined with the two methods. It improves applicability in speech endpoint confirmation. The MATLAB simulation results show that the system using the optimization algorithm achieved optimal accuracy and quickness, and gained anticipative effect.
{"title":"The optimization of Speech Endpoint Confirmation research","authors":"Chen Baoyuan, Liu Ying, Yue Haibin, Z. Yongjian","doi":"10.1109/IFOST.2011.6021167","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021167","url":null,"abstract":"In speech processing, Speech Endpoint Confirmation has a very important position. Sub-band average-energy and the variance of the wavelet coefficients are the common algorithms, the disadvantage of the former algorithm is the limitation of only suitable for Gaussian white noise environment, while the latter algorithm can't overcome the drawback in Time-consuming, bad real-time. According to these problems, this paper puts forward optimization algorithm combined with the two methods. It improves applicability in speech endpoint confirmation. The MATLAB simulation results show that the system using the optimization algorithm achieved optimal accuracy and quickness, and gained anticipative effect.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"1998 1","pages":"907-910"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88936506","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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