A small-angle x-ray scattering (SAXS) technique using synchrotron radiation as the x-ray source has been employed to characterize the microstructure of PI/TiO2 hybrid films prepared by Sol-Gel method. It is shown that the SAXS profile is hardly constant with Porod's law showing a negative and positive slope, suggesting that an interfacial layer exists between the nanoparticles and PI matrix in films when content of more than 5%. This suggests that the inorganic nanoparticles linked to the PI matrix through covalent bond. However, the only positive deviation exists in the film of content 5%. The reason is that there is a fluctuation of electron density in hybrid system. This kind of material has also been proved to possess both surface and mass fractal structures.
{"title":"Effect of content on microstructure of PI/TiO2 hybrid Films","authors":"Xiaoxu Liu, Wu Yan, Jinghua Yin, Minghua Chen, Yu Feng, Guang Li","doi":"10.1109/IFOST.2011.6021010","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021010","url":null,"abstract":"A small-angle x-ray scattering (SAXS) technique using synchrotron radiation as the x-ray source has been employed to characterize the microstructure of PI/TiO2 hybrid films prepared by Sol-Gel method. It is shown that the SAXS profile is hardly constant with Porod's law showing a negative and positive slope, suggesting that an interfacial layer exists between the nanoparticles and PI matrix in films when content of more than 5%. This suggests that the inorganic nanoparticles linked to the PI matrix through covalent bond. However, the only positive deviation exists in the film of content 5%. The reason is that there is a fluctuation of electron density in hybrid system. This kind of material has also been proved to possess both surface and mass fractal structures.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"98 1","pages":"230-232"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86049953","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.2011.6021017
E. Uyanga, G. Sevjidsuren, B. Bumaa, D. Sangaa, P. Altantsog, Uyanga Enkhnaran, Sevjidsuren Galsan
Proton exchange membrane fuel cells (PEMFCs), as clean energy - converting devices, have been attracting enormous research interest as due to their high efficiency, high energy density, and low or zero emissions.
{"title":"Exergy analysis of NEXA™ PEM fuel cell module","authors":"E. Uyanga, G. Sevjidsuren, B. Bumaa, D. Sangaa, P. Altantsog, Uyanga Enkhnaran, Sevjidsuren Galsan","doi":"10.1109/IFOST.2011.6021017","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021017","url":null,"abstract":"Proton exchange membrane fuel cells (PEMFCs), as clean energy - converting devices, have been attracting enormous research interest as due to their high efficiency, high energy density, and low or zero emissions.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"51 1","pages":"256-260"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86050334","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.2011.6021255
Yingli Shu, Guozhi Zhang, Zhenhai Yang, Xian Li
WCF Method is a classic way to derive lower confidence limits of parameter functions. Based on the analytical expression of the reliability function for general complex system described by the minimal path, this article gives the formula of the lower confidence limit of reliability by WCF method. Simulation studies for the Bridge system demonstrate the efficiency of the method and the superiority compared with other methods.
{"title":"Lower confidence limits of reliability for general complex system","authors":"Yingli Shu, Guozhi Zhang, Zhenhai Yang, Xian Li","doi":"10.1109/IFOST.2011.6021255","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021255","url":null,"abstract":"WCF Method is a classic way to derive lower confidence limits of parameter functions. Based on the analytical expression of the reliability function for general complex system described by the minimal path, this article gives the formula of the lower confidence limit of reliability by WCF method. Simulation studies for the Bridge system demonstrate the efficiency of the method and the superiority compared with other methods.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"58 1","pages":"1289-1294"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86038699","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.2011.6021180
Zhang Rui, Liu Nan, Ma Hui-jun
It is difficult to obtain voltage fluctuation signal for determining flicker by orthogonal wavelets transform (OWT). In this paper, the compactly supported dyadic orthogonal linear phase complex wavelet is constructed using the compactly supported dyadic orthogonal real-valued wavelet in terms of lifting scheme. A pair of quadrature components with the same amplitude and the same frequency can be used to realize the demodulation of voltage fluctuation signal in this method. Simulation results show the method proposed can get better results than OWT without synchronous sample for power grid frequency, has the characteristic of shift-invariant. Result of voltage fluctuation detection is independent of initial time recording signal.
{"title":"The application of complex wavelet transform in voltage fluctuations detection","authors":"Zhang Rui, Liu Nan, Ma Hui-jun","doi":"10.1109/IFOST.2011.6021180","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021180","url":null,"abstract":"It is difficult to obtain voltage fluctuation signal for determining flicker by orthogonal wavelets transform (OWT). In this paper, the compactly supported dyadic orthogonal linear phase complex wavelet is constructed using the compactly supported dyadic orthogonal real-valued wavelet in terms of lifting scheme. A pair of quadrature components with the same amplitude and the same frequency can be used to realize the demodulation of voltage fluctuation signal in this method. Simulation results show the method proposed can get better results than OWT without synchronous sample for power grid frequency, has the characteristic of shift-invariant. Result of voltage fluctuation detection is independent of initial time recording signal.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"27 1","pages":"963-966"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81072710","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.2011.6021038
Jing Zhang, Xin Gao, En Li
According to the typical nonlinearity characteristics of the manipulator system, a variable structure control (VSC) is proposed. In this paper, construct a nonlinear dynamic mathematical model for the manipulator system, using the nonlinear mathematical model of sliding surface integral design, with adaptive switching function strategies to estimate the parameters of the uncertain systems, adaptive control and sliding mode control together. The paper application variable structure, integral variable structure and adaptive variable structure control method of the manipulator system design, the simulation results show that this algorithm decreases the uncertainty, with smaller control gain, can effectively weaken system chattering.
{"title":"An adaptive variable structure controller for robotic manipulators","authors":"Jing Zhang, Xin Gao, En Li","doi":"10.1109/IFOST.2011.6021038","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021038","url":null,"abstract":"According to the typical nonlinearity characteristics of the manipulator system, a variable structure control (VSC) is proposed. In this paper, construct a nonlinear dynamic mathematical model for the manipulator system, using the nonlinear mathematical model of sliding surface integral design, with adaptive switching function strategies to estimate the parameters of the uncertain systems, adaptive control and sliding mode control together. The paper application variable structure, integral variable structure and adaptive variable structure control method of the manipulator system design, the simulation results show that this algorithm decreases the uncertainty, with smaller control gain, can effectively weaken system chattering.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"13 1","pages":"351-355"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78498055","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.2011.6021116
Yu Cao, Xudonga Wang, R. Na, L. Mao
The traditional current and speed PI control method of Permanent magnet synchronous motor (PMSM) vector control exists problems such as large fluctuation of start-up torque and speed, and bad tracking performance of current etc. Aiming at solving these problems, this paper designed the current regulator which adopted integral separation control strategy and speed regulator with fuzzy-PI double mode control strategy, and simulation model was built in Matlab/Simulation, the simulation result indicated that this improved control system had better dynamic and static characteristic than traditional control system. Finally, experiments based on the proposed method were done to verify the correctness of the conclusion further.
{"title":"Research on a improved PMSM vector control system","authors":"Yu Cao, Xudonga Wang, R. Na, L. Mao","doi":"10.1109/IFOST.2011.6021116","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021116","url":null,"abstract":"The traditional current and speed PI control method of Permanent magnet synchronous motor (PMSM) vector control exists problems such as large fluctuation of start-up torque and speed, and bad tracking performance of current etc. Aiming at solving these problems, this paper designed the current regulator which adopted integral separation control strategy and speed regulator with fuzzy-PI double mode control strategy, and simulation model was built in Matlab/Simulation, the simulation result indicated that this improved control system had better dynamic and static characteristic than traditional control system. Finally, experiments based on the proposed method were done to verify the correctness of the conclusion further.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"61 3 1","pages":"678-683"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79580691","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.2011.6021182
Chuntao Man, Shun Wang, Wei Wang, Juan-Ning Zhao
Due to traditional ballastless track settlement prediction algorithms have large error and can't accurately forecast settlement after work, a new method using Support Vector Machine(SVM) to forecast ballastless track settlement of high-speed railway is proposed in this paper. Firstly, build a SVM model and calculate the dual model. Then, mapping it to a higher dimension space by kernel function. At last solve and validate the model by an example. By comparing with the traditional forecasting algorithms and BP neural network, the results show that SVM can obtain high prediction precision and good generalization capability in few training samples comparing to other algorithms, provide a more secure and reliable solution for ballastless track settlement.
{"title":"Subgrade settlement prediction based on Support Vector Machine","authors":"Chuntao Man, Shun Wang, Wei Wang, Juan-Ning Zhao","doi":"10.1109/IFOST.2011.6021182","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021182","url":null,"abstract":"Due to traditional ballastless track settlement prediction algorithms have large error and can't accurately forecast settlement after work, a new method using Support Vector Machine(SVM) to forecast ballastless track settlement of high-speed railway is proposed in this paper. Firstly, build a SVM model and calculate the dual model. Then, mapping it to a higher dimension space by kernel function. At last solve and validate the model by an example. By comparing with the traditional forecasting algorithms and BP neural network, the results show that SVM can obtain high prediction precision and good generalization capability in few training samples comparing to other algorithms, provide a more secure and reliable solution for ballastless track settlement.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"23 1","pages":"971-974"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89235117","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.2011.6021084
Yunyan Xia, D. Meng, Yanping Ren
In order to more accurately calculate the starting characteristics of the high-voltage motor and determine the impact on the grid, this paper establishes the dynamic model. The starting characteristic of the high-voltage motor is calculated based on the numerical method. In addition, this paper analyses the influence of the load changes on the starting characteristic. Compared with the steady-state characteristic curve, the result is much closer to the practical situation. This method provides more accurate references for the high-voltage motor design and the determination of starting mode.
{"title":"Research of starting characteristics for high-voltage motors based on numerical method","authors":"Yunyan Xia, D. Meng, Yanping Ren","doi":"10.1109/IFOST.2011.6021084","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021084","url":null,"abstract":"In order to more accurately calculate the starting characteristics of the high-voltage motor and determine the impact on the grid, this paper establishes the dynamic model. The starting characteristic of the high-voltage motor is calculated based on the numerical method. In addition, this paper analyses the influence of the load changes on the starting characteristic. Compared with the steady-state characteristic curve, the result is much closer to the practical situation. This method provides more accurate references for the high-voltage motor design and the determination of starting mode.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"147 1","pages":"549-552"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77967603","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.2011.6021075
T. Minh, A. Shmoilov
For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed.
几年来，托木斯克理工大学已经开发了电网继电保护技术效率的概率方法和算法。
{"title":"Using the criterion of technical efficiency for set-up of line distance relay protection","authors":"T. Minh, A. Shmoilov","doi":"10.1109/IFOST.2011.6021075","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021075","url":null,"abstract":"For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"63 1","pages":"512-516"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88519540","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.2011.6021263
Odgerel Enkhtur, Dashjamts Dalai
Geological distribution and geotechnical characterization of expansive soils in Mongolia were summarized. Expansive soils are distributed in around 35% of total area of Mongolia. Distribution of expansive soil is illustrated in a geological map and the engineering geological and geotechnical properties are given for each region in a table. For the geological period, it was noted that expansive soils in Mongolia formed in the end of Cretaceous, Mesozoic era, to Neocene or Quaternary of Tertiary era. Swelling potential is high in Dundgobi-Sainshand region and Baganuur region, is medium in Gurvan Saikhan, Zaamar and Orkhon-Selenge region and is low in other areas.
{"title":"The distribution and characterization of expansive soils in Mongolia","authors":"Odgerel Enkhtur, Dashjamts Dalai","doi":"10.1109/IFOST.2011.6021263","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021263","url":null,"abstract":"Geological distribution and geotechnical characterization of expansive soils in Mongolia were summarized. Expansive soils are distributed in around 35% of total area of Mongolia. Distribution of expansive soil is illustrated in a geological map and the engineering geological and geotechnical properties are given for each region in a table. For the geological period, it was noted that expansive soils in Mongolia formed in the end of Cretaceous, Mesozoic era, to Neocene or Quaternary of Tertiary era. Swelling potential is high in Dundgobi-Sainshand region and Baganuur region, is medium in Gurvan Saikhan, Zaamar and Orkhon-Selenge region and is low in other areas.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":"42 1","pages":"1327-1330"},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90640914","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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