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":null,"pages":null},"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.2011.6021180
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":null,"pages":null},"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.2011.6020962
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":null,"pages":null},"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":null,"pages":null},"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.2011.6021128
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":null,"pages":null},"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.2011.6021116
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":null,"pages":null},"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.2011.6021146
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":null,"pages":null},"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.2011.6021038
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":null,"pages":null},"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.2011.6021187
Jing Zhang, Sai Dai, Jiamin Li, Ning Wang
To solve the problems that magnetic levitation system has the characteristics of open-loop instability and nonlinearity and the traditional PID controller is difficult to achieve good control effect because of the fixed parameters, a kind of intelligent PID control system based on fuzzy RBF neural network is proposed in this paper. This method combines the reasoning ability of fuzzy control with study ability of neural network. Fuzzy control and RBF neural network are applied in order to adjust the parameters of PID kp, ki and kd online which is to satisfy the static and dynamic performance requirements in magnetic levitation system. By comparing with the conventional PID control, the results showed that, the improved control has better adaptability and robustness which can control magnetic levitation system more effectively.
{"title":"Fuzzy RBF neural network in the application of magnetic levitation system","authors":"Jing Zhang, Sai Dai, Jiamin Li, Ning Wang","doi":"10.1109/IFOST.2011.6021187","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021187","url":null,"abstract":"To solve the problems that magnetic levitation system has the characteristics of open-loop instability and nonlinearity and the traditional PID controller is difficult to achieve good control effect because of the fixed parameters, a kind of intelligent PID control system based on fuzzy RBF neural network is proposed in this paper. This method combines the reasoning ability of fuzzy control with study ability of neural network. Fuzzy control and RBF neural network are applied in order to adjust the parameters of PID kp, ki and kd online which is to satisfy the static and dynamic performance requirements in magnetic levitation system. By comparing with the conventional PID control, the results showed that, the improved control has better adaptability and robustness which can control magnetic levitation system more effectively.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77118158","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.2011.6020966
E. Nyamdavaa, P. Altantsog, E. Uyanga, B. Bumaa, T. Chen, C. Lee, G. Sevjidsuren, D. Sangaa
The study of Perovskite - type LaCoO3 oxides used to the Solid oxide fuel cell catalyst broadly observed due to their cheap and simple technology.
钙钛矿型LaCoO3氧化物因其价格低廉、工艺简单而广泛应用于固体氧化物燃料电池催化剂的研究。
{"title":"Crystal structure study of Perovskite-type LaCoO3 electro-catalyst synthesized by Pechini method","authors":"E. Nyamdavaa, P. Altantsog, E. Uyanga, B. Bumaa, T. Chen, C. Lee, G. Sevjidsuren, D. Sangaa","doi":"10.1109/IFOST.2011.6020966","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6020966","url":null,"abstract":"The study of Perovskite - type LaCoO3 oxides used to the Solid oxide fuel cell catalyst broadly observed due to their cheap and simple technology.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77360958","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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