Pub Date : 2011-09-23DOI: 10.1109/MEC.2011.6025500
W. Liming, Jing Hui
The improved detecting method of harmonic current is put forward based on the instantaneous reactive power theory. In this method, the harmonic current is detected by average current. At the same time the method has the characteristics of simple structure, strong real-time and good dynamic response. In the paper, the proposed method is used to carry out MATLAB simulation for real example. The results show the effectiveness of the proposed method.
{"title":"Harmonic detecting method based on improved average current","authors":"W. Liming, Jing Hui","doi":"10.1109/MEC.2011.6025500","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025500","url":null,"abstract":"The improved detecting method of harmonic current is put forward based on the instantaneous reactive power theory. In this method, the harmonic current is detected by average current. At the same time the method has the characteristics of simple structure, strong real-time and good dynamic response. In the paper, the proposed method is used to carry out MATLAB simulation for real example. The results show the effectiveness of the proposed method.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125189484","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025932
Shu Jun, Hong Yunfeng, Zhang Zhifu, Huang Xianchao
The paper presents a deterministic model, which takes into account the final water storage and the effects of water head, for optimal mid-long term generation scheduling of a hydrothermal system. Considering its large scale mixed integer nonlinear structure, a hybrid algorithm based on Genetic Algorithm and decomposition algorithm is developed to solve it. The model is divided into thermal power dispatch and hydro power dispatch subproblems respectively by using reservoir volumes as genetic variables which consider the complex relationship between reservoirs. These two subproblems are independently solved according to their own characteristics. The simulation results reveal that comparing with GA the hybrid algorithm is an effective method with shorter computation time and higher precision.
{"title":"A hybrid algorithm for mid-long term hydrothermal generation scheduling","authors":"Shu Jun, Hong Yunfeng, Zhang Zhifu, Huang Xianchao","doi":"10.1109/MEC.2011.6025932","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025932","url":null,"abstract":"The paper presents a deterministic model, which takes into account the final water storage and the effects of water head, for optimal mid-long term generation scheduling of a hydrothermal system. Considering its large scale mixed integer nonlinear structure, a hybrid algorithm based on Genetic Algorithm and decomposition algorithm is developed to solve it. The model is divided into thermal power dispatch and hydro power dispatch subproblems respectively by using reservoir volumes as genetic variables which consider the complex relationship between reservoirs. These two subproblems are independently solved according to their own characteristics. The simulation results reveal that comparing with GA the hybrid algorithm is an effective method with shorter computation time and higher precision.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125908391","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025707
Zhang Yifei
In order to build an open, interactive and personalized teaching platform, starting from an overview of various teaching platforms, this paper describes the functional advantages as well as the design disciplines of Web CT platform applied in college English teaching. It sets forth the description of a model design which includes a learning module design, a teaching module design, an interacting module design and a system managing module design. Web CT platform selects Linux as its operating system, Apache as its web server and MYSQL as its database. In order to implement a database connection and to gain a remote control of the front-end browser, it chooses PHP and Java as programming languages.
{"title":"Web CT-based platform design for interactive college English teaching","authors":"Zhang Yifei","doi":"10.1109/MEC.2011.6025707","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025707","url":null,"abstract":"In order to build an open, interactive and personalized teaching platform, starting from an overview of various teaching platforms, this paper describes the functional advantages as well as the design disciplines of Web CT platform applied in college English teaching. It sets forth the description of a model design which includes a learning module design, a teaching module design, an interacting module design and a system managing module design. Web CT platform selects Linux as its operating system, Apache as its web server and MYSQL as its database. In order to implement a database connection and to gain a remote control of the front-end browser, it chooses PHP and Java as programming languages.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126037201","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025822
Y. Yongming, Li Qinjun, Chen Xihui, Z. Changchun
Digital mapping camera is an important tool for modern airborne photogrammetry. Monochromic area CCD which is full frame transfer is selected as image sensor in this paper. Electronic shutter is utilized to eliminate the opening delay of mechanical shutter which will affect the precision of exterior orientation elements acquisition. The equation for calculation displacement of principal point is proposed for TDI forward image motion compensation to compensate principal point shift. Imaging pose control system is designed in order to meet the need for airborne stereo mapping.
{"title":"Imaging control of airborne area CCD mapping camera","authors":"Y. Yongming, Li Qinjun, Chen Xihui, Z. Changchun","doi":"10.1109/MEC.2011.6025822","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025822","url":null,"abstract":"Digital mapping camera is an important tool for modern airborne photogrammetry. Monochromic area CCD which is full frame transfer is selected as image sensor in this paper. Electronic shutter is utilized to eliminate the opening delay of mechanical shutter which will affect the precision of exterior orientation elements acquisition. The equation for calculation displacement of principal point is proposed for TDI forward image motion compensation to compensate principal point shift. Imaging pose control system is designed in order to meet the need for airborne stereo mapping.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116010404","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025489
Yanyu Meng, Shi Yan
The piezoelectric ceramics sensors are embedded in the concrete columns with large and small eccentric compression for crack online monitoring. The digital oscilloscope receiver is applied to obtain in real-time the full waveform characteristics of acoustic emission signal during the column damage process. Using signal processing and passive monitoring technology, this article conducts crack development of real-time dynamic monitoring and evaluation on the damage process of the two specimens by the piezoelectric sensors. The experiment results show that the generation and development of the cracks are obviously companying with the acoustic emission phenomena. The energy accumulation process of the acoustic emission signal has obvious deference from the two specimens and shows basically the property of the cracks development. This technology opens a new road for real-time monitoring and damage detection on line for cracks of concrete structures.
{"title":"Research on damage passive monitoring of eccentric compression concrete columns based on piezoelectric sensors","authors":"Yanyu Meng, Shi Yan","doi":"10.1109/MEC.2011.6025489","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025489","url":null,"abstract":"The piezoelectric ceramics sensors are embedded in the concrete columns with large and small eccentric compression for crack online monitoring. The digital oscilloscope receiver is applied to obtain in real-time the full waveform characteristics of acoustic emission signal during the column damage process. Using signal processing and passive monitoring technology, this article conducts crack development of real-time dynamic monitoring and evaluation on the damage process of the two specimens by the piezoelectric sensors. The experiment results show that the generation and development of the cracks are obviously companying with the acoustic emission phenomena. The energy accumulation process of the acoustic emission signal has obvious deference from the two specimens and shows basically the property of the cracks development. This technology opens a new road for real-time monitoring and damage detection on line for cracks of concrete structures.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"274 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116047207","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025466
Huang Ying-qing, Jiang Xiao-yu, Liu Zhong-xuan, Du Deng-chong, Yao Jun
In the present paper, an adaptive α-β filtering algorithm is adapted for the motion compensation of EIS(electronic image stabilization). It is characterized of less computation, and easy to be realized in real-time. Inter-frame global motion vectors were predicted by feature corners matching based motion estimation. The global camera motion was defined in terms of constant velocity motion models, and adaptive α-β filtering was employed to facilitate smooth operation. Experimental results for many video sequences show that the method can eliminate high frequency dithering, remain the meaningful motion of camera and realize real-time image stabilization satisfactorily. The present algorithm is more robust and higher veracity comparing with other algorithms.
{"title":"Application of adaptive α-β filtering algorithm to electronic image stabilization","authors":"Huang Ying-qing, Jiang Xiao-yu, Liu Zhong-xuan, Du Deng-chong, Yao Jun","doi":"10.1109/MEC.2011.6025466","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025466","url":null,"abstract":"In the present paper, an adaptive α-β filtering algorithm is adapted for the motion compensation of EIS(electronic image stabilization). It is characterized of less computation, and easy to be realized in real-time. Inter-frame global motion vectors were predicted by feature corners matching based motion estimation. The global camera motion was defined in terms of constant velocity motion models, and adaptive α-β filtering was employed to facilitate smooth operation. Experimental results for many video sequences show that the method can eliminate high frequency dithering, remain the meaningful motion of camera and realize real-time image stabilization satisfactorily. The present algorithm is more robust and higher veracity comparing with other algorithms.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116111024","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025474
Yin Lai-wu, C. Deyun, Zhu Hongwei
The Internet of Things refers to a network of internet-enables objects, together with web services that interact with these objects which bases on appointed treaty to make information exchange and communication in order to achieve intellectual identification, location, tracking, monitoring and management. Since 2009, the the Internet of Things concept in the global and domestic has become hot flashes, which called the third wave in global Internet information industry after computer and internet. This paper analyzes the Internet of Things application perception technology, network communication technology, data encryption technology, network security technology, and other key technologies based on FRID technology in recent years which will surely promote all their important roles in the IOT.
{"title":"Research on key technology of Internet of Things based on FRID","authors":"Yin Lai-wu, C. Deyun, Zhu Hongwei","doi":"10.1109/MEC.2011.6025474","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025474","url":null,"abstract":"The Internet of Things refers to a network of internet-enables objects, together with web services that interact with these objects which bases on appointed treaty to make information exchange and communication in order to achieve intellectual identification, location, tracking, monitoring and management. Since 2009, the the Internet of Things concept in the global and domestic has become hot flashes, which called the third wave in global Internet information industry after computer and internet. This paper analyzes the Internet of Things application perception technology, network communication technology, data encryption technology, network security technology, and other key technologies based on FRID technology in recent years which will surely promote all their important roles in the IOT.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122786466","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025905
Wang Jingfang
In this paper, a time-frequency filter is designed, which can detect the frequency, amplitude and phase of any order harmonics and interharmonics in signal by means of time domain convolution. Negative half-axis frequency is restrained with Hilbert transform. The theory analysis are carried to this method and the calculate formula are concluded, the spectral leakage and the barrier domino offect are shun, the non-integer order wave are eluded, which are engendered in Fourier domain. Experiment simulation results show that time-frequency filtering convolution flunction can be designed and realized neatly and be real-time implemented conveniently in engineering application; the influences of fundamental frequency fluctuation on harmonic analysis are restrained by using the approach presented in this paper; the calculating frequencies with many order harmonics and interharmonics are nicety, the amplitudes and the initial phases are detected in high-accurately.
{"title":"High-precision time-domain convolution in harmonic detection","authors":"Wang Jingfang","doi":"10.1109/MEC.2011.6025905","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025905","url":null,"abstract":"In this paper, a time-frequency filter is designed, which can detect the frequency, amplitude and phase of any order harmonics and interharmonics in signal by means of time domain convolution. Negative half-axis frequency is restrained with Hilbert transform. The theory analysis are carried to this method and the calculate formula are concluded, the spectral leakage and the barrier domino offect are shun, the non-integer order wave are eluded, which are engendered in Fourier domain. Experiment simulation results show that time-frequency filtering convolution flunction can be designed and realized neatly and be real-time implemented conveniently in engineering application; the influences of fundamental frequency fluctuation on harmonic analysis are restrained by using the approach presented in this paper; the calculating frequencies with many order harmonics and interharmonics are nicety, the amplitudes and the initial phases are detected in high-accurately.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122923213","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025850
Wei Guo, Yingjie Zhan
H-matrix, as a power tool in mathematics, plays an important role in some application fields such as computations and computing methods. However, it is very difficult to determine the matrix to be H-matrix. By using α diagonally dominant matrix, we give some new sufficient conditions to judge nonsingular H-matrix and thus we extend the criteria standard of nonsingular H-matrix.
{"title":"Criteria for nonsingular H-matrix","authors":"Wei Guo, Yingjie Zhan","doi":"10.1109/MEC.2011.6025850","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025850","url":null,"abstract":"H-matrix, as a power tool in mathematics, plays an important role in some application fields such as computations and computing methods. However, it is very difficult to determine the matrix to be H-matrix. By using α diagonally dominant matrix, we give some new sufficient conditions to judge nonsingular H-matrix and thus we extend the criteria standard of nonsingular H-matrix.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122472396","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025936
Li Tong-yan, Chen Chao
Learning to predict communication faults from alarm sequences is an important, real-world problem in communication networks. There are various methods from the areas of statistics and data mining for this purpose. In order to improve predictive efficiency, we propose a prediction with Sparse Bayesian Method (PSBM) in this paper. Furthermore, we also provide the mathematical formulation of the approach. Compared with Support Vector Machine (SVM) method, the new predictive algorithm not only has the same performance of prediction, but also has more accuracy with fewer predictive errors. In particular, our experimental results show that PSBM has only 70% number errors of SVM in the same test environment.
{"title":"Alarm sequences forecasting based on sparse Bayesian in communication networks","authors":"Li Tong-yan, Chen Chao","doi":"10.1109/MEC.2011.6025936","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025936","url":null,"abstract":"Learning to predict communication faults from alarm sequences is an important, real-world problem in communication networks. There are various methods from the areas of statistics and data mining for this purpose. In order to improve predictive efficiency, we propose a prediction with Sparse Bayesian Method (PSBM) in this paper. Furthermore, we also provide the mathematical formulation of the approach. Compared with Support Vector Machine (SVM) method, the new predictive algorithm not only has the same performance of prediction, but also has more accuracy with fewer predictive errors. In particular, our experimental results show that PSBM has only 70% number errors of SVM in the same test environment.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129601726","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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