Fuzzy c-mean (FCM) is an algorithm for obtaining an optimal fuzzy partition of data set by minimizing an objective function. The cluster validity function is used to evaluate the validity of clustering, and the clustering results will tend to be more reasonable on the condition that the initial clustering number is accurately ascertained. According to the analysis of the weighting exponent m, a new cluster validity function is proposed based on the intra-cluster disperse distance. Then the stability and reliability of the function is analyzed theoretically. The experimental results indicate that the new validity function can find out the optimized cluster number and it is also robust to the weighting coefficient m.
{"title":"An Improved Validity Function for Fuzzy C-Means Cluster","authors":"Wu Yibing, Song Jianshe, Niu Chao","doi":"10.1109/IMCCC.2011.73","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.73","url":null,"abstract":"Fuzzy c-mean (FCM) is an algorithm for obtaining an optimal fuzzy partition of data set by minimizing an objective function. The cluster validity function is used to evaluate the validity of clustering, and the clustering results will tend to be more reasonable on the condition that the initial clustering number is accurately ascertained. According to the analysis of the weighting exponent m, a new cluster validity function is proposed based on the intra-cluster disperse distance. Then the stability and reliability of the function is analyzed theoretically. The experimental results indicate that the new validity function can find out the optimized cluster number and it is also robust to the weighting coefficient m.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129927784","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}
Open network promotes the cooperation activities and resource-sharing service among entities. It makes trust one of the critical issues in security field. Some trust quantification models can only quantify trust relationship in the same environment, without considering the influence of trust context. The influence of trust context to trust relationship is investigated. A definition of equivalent experience is proposed. According to the probability distribution of binary events, the Equivalent Experience-based Beta Trust Quantification Model is proposed.
{"title":"Equivalent Experience-based Trust Quantification Model","authors":"Yulong Liu, Lei Zhang, Tao Wang","doi":"10.1109/IMCCC.2011.124","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.124","url":null,"abstract":"Open network promotes the cooperation activities and resource-sharing service among entities. It makes trust one of the critical issues in security field. Some trust quantification models can only quantify trust relationship in the same environment, without considering the influence of trust context. The influence of trust context to trust relationship is investigated. A definition of equivalent experience is proposed. According to the probability distribution of binary events, the Equivalent Experience-based Beta Trust Quantification Model is proposed.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128253449","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}
In order to implement fast, precise and stationarily tracking, digital air tracking servo system is designed. The system uses the MPU STM32F103 as the control center, UBA2032 H-bridge driver as the motor driver, velocity-measuring motor unit as the power and velocity sensor, rotary transformer as the angle sensor. ADC MAX1270 converts the analog data to digital data, which is transformed to STM32F103 through SPI interface. Angle, velocity and current which compose three-closed loop are measured and feedback and Fuzzy-PID control arithmetic is adopted. Route tracking experiments prove that the stability of the system is good and its static and dynamic target can satisfy the precision requirements.
{"title":"Design of Air Tracking Servo System Based on STM32F103","authors":"Chen Zhi-jia, Su Shuying","doi":"10.1109/IMCCC.2011.225","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.225","url":null,"abstract":"In order to implement fast, precise and stationarily tracking, digital air tracking servo system is designed. The system uses the MPU STM32F103 as the control center, UBA2032 H-bridge driver as the motor driver, velocity-measuring motor unit as the power and velocity sensor, rotary transformer as the angle sensor. ADC MAX1270 converts the analog data to digital data, which is transformed to STM32F103 through SPI interface. Angle, velocity and current which compose three-closed loop are measured and feedback and Fuzzy-PID control arithmetic is adopted. Route tracking experiments prove that the stability of the system is good and its static and dynamic target can satisfy the precision requirements.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128282059","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}
In this paper, a design method of schematic mapping system based on inter-integrated circuit (I2C) bus and universal serial bus (USB) is introduced. The test principle which is adept by the system and the hardware design structure of the schematic mapping system are explained. Then this paper details hardware design structures of control-circuit, test-circuit and flexible needle bed. At the last, the system software structure and design are analyzed.
{"title":"Design of Schematic Mapping System Based on I2C and USB Bus","authors":"Fang Zhao, Zhensheng Wang, D. Deng, Huanzhao Liu","doi":"10.1109/IMCCC.2011.54","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.54","url":null,"abstract":"In this paper, a design method of schematic mapping system based on inter-integrated circuit (I2C) bus and universal serial bus (USB) is introduced. The test principle which is adept by the system and the hardware design structure of the schematic mapping system are explained. Then this paper details hardware design structures of control-circuit, test-circuit and flexible needle bed. At the last, the system software structure and design are analyzed.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128302265","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 development of Inmarsat communication system is introduced first in this paper, which includes System Configuration, Inmarsat Constellation, Frequency distribute and Beam employ, then the application of Inmarsat communication system in areas such as Ocean transport, Aeronautical communication, Emergency communication, Data relay for manned spacecrafts, News report are described.
{"title":"Development and Application of INMARSAT Satellite Communication System","authors":"Wang Jun-lin, Liu Chun-sheng","doi":"10.1109/IMCCC.2011.159","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.159","url":null,"abstract":"The development of Inmarsat communication system is introduced first in this paper, which includes System Configuration, Inmarsat Constellation, Frequency distribute and Beam employ, then the application of Inmarsat communication system in areas such as Ocean transport, Aeronautical communication, Emergency communication, Data relay for manned spacecrafts, News report are described.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129284328","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}
As the execution component of the satellite attitude control system, the reaction flywheel adjusts the attitude of the satellite by outputting a accurate control torque. Therefore the torque control accuracy of the flywheel motor is important for the control accuracy of the whole attitude control system. In this paper, the flywheel motor is a square-wave brushless DC motor, which is of simple structure and high reliability, but it has an inherent torque ripple from its operating principle. To resolve this problem, a novel current sensor and its corresponding inverter topology is adopted in this paper, which can detect winding currents in every operation state of the square-wave brushless DC motor with only one sensor, its effectiveness is verified by the experimental result.
{"title":"Application of a Novel Current Sensor in the Reaction Flywheel Control","authors":"Qi Lin, Tiecai Li","doi":"10.1109/IMCCC.2011.23","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.23","url":null,"abstract":"As the execution component of the satellite attitude control system, the reaction flywheel adjusts the attitude of the satellite by outputting a accurate control torque. Therefore the torque control accuracy of the flywheel motor is important for the control accuracy of the whole attitude control system. In this paper, the flywheel motor is a square-wave brushless DC motor, which is of simple structure and high reliability, but it has an inherent torque ripple from its operating principle. To resolve this problem, a novel current sensor and its corresponding inverter topology is adopted in this paper, which can detect winding currents in every operation state of the square-wave brushless DC motor with only one sensor, its effectiveness is verified by the experimental result.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129654576","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}
In this paper, we proposed a multiband orthogonal PSWF pulse set design method. The designed pulse set has a high spectrum utilization efficiency while meeting the FCC spectral mask without frequency shifting or additional filtering. Based on this, a Mary PPM modulation scheme using the orthogonal pulse set is developed. In this scheme each user is assigned a different orthogonal PSWF pulse. And the MAI of the system can be eliminated completely under ideal condition. An analytic expression of the SER performance for the scheme is derived theoretically. Simulation results show that the proposed system has a better BER performance than the traditional UWB system employing single Gaussian pulses. Moreover, the multiband orthogonal PSWF pulses are effective in overcoming MAI of the system.
{"title":"Multiband Orthogonal PSWF Pulses Used for M-ary PPM Ultra-Wideband System","authors":"Hou Wen-jun, Wang Hong-xing","doi":"10.1109/IMCCC.2011.152","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.152","url":null,"abstract":"In this paper, we proposed a multiband orthogonal PSWF pulse set design method. The designed pulse set has a high spectrum utilization efficiency while meeting the FCC spectral mask without frequency shifting or additional filtering. Based on this, a Mary PPM modulation scheme using the orthogonal pulse set is developed. In this scheme each user is assigned a different orthogonal PSWF pulse. And the MAI of the system can be eliminated completely under ideal condition. An analytic expression of the SER performance for the scheme is derived theoretically. Simulation results show that the proposed system has a better BER performance than the traditional UWB system employing single Gaussian pulses. Moreover, the multiband orthogonal PSWF pulses are effective in overcoming MAI of the system.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130329490","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 distribution and shape of magnetic fluid can be influenced by the adding magnetic field. The magnetism of magnetic fluid can be presented by the adding magnetic field. At the same time, the magnetism can influence the distribution of the adding magnetic field. There is the decoupled question between the magnetic field and force under the adding magnetic field. When the magnetic field is stronger, the influence can be neglected that the magnetism of magnetic fluid affects the distribution of the adding magnetic field. The smaller is the saturation magnetization of magnetic fluid, the smaller is the error of decoupled computation and linear computation.
{"title":"Research of Computation about Magnetic Fluid under Magnetic Fluid","authors":"Meng Zhao, J. Zou","doi":"10.1109/IMCCC.2011.102","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.102","url":null,"abstract":"The distribution and shape of magnetic fluid can be influenced by the adding magnetic field. The magnetism of magnetic fluid can be presented by the adding magnetic field. At the same time, the magnetism can influence the distribution of the adding magnetic field. There is the decoupled question between the magnetic field and force under the adding magnetic field. When the magnetic field is stronger, the influence can be neglected that the magnetism of magnetic fluid affects the distribution of the adding magnetic field. The smaller is the saturation magnetization of magnetic fluid, the smaller is the error of decoupled computation and linear computation.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121503055","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}
Stereo matching is a challenging issue in multicamera scene reconstruction, and recently many methods have been proposed in different contexts. This paper presents a template based stereo matching algorithm using graph-cut. First, a set of non-overlapping templates are derived from the reference image (left or right image) to represent the scene structure. Each template is assigned to a corresponding disparity value in order to obtain an energy function which is applied to construct a graph. The minimum cut on the graph by using graph-cut also minimizes the energy function. Experimental results on the Middlebury test set show that the proposed algorithm can obtain satisfactory stereo matching results and is competitive with the state-of-the-art algorithms.
{"title":"Template Based Stereo Matching Using Graph-cut","authors":"Meng Huan, Kuanquan Wang, W. Zuo, Zhaoxin Li","doi":"10.1109/IMCCC.2011.82","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.82","url":null,"abstract":"Stereo matching is a challenging issue in multicamera scene reconstruction, and recently many methods have been proposed in different contexts. This paper presents a template based stereo matching algorithm using graph-cut. First, a set of non-overlapping templates are derived from the reference image (left or right image) to represent the scene structure. Each template is assigned to a corresponding disparity value in order to obtain an energy function which is applied to construct a graph. The minimum cut on the graph by using graph-cut also minimizes the energy function. Experimental results on the Middlebury test set show that the proposed algorithm can obtain satisfactory stereo matching results and is competitive with the state-of-the-art algorithms.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121520710","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}
Differentiating angular displacement and displacement at Manipulator's end-effectors directly, analysis expressions of angular velocity, linear velocity, angular acceleration and acceleration are given in this paper. According to these expressions, two iterative programs about velocity and acceleration at End-effectors is given as well as. Having no use for counting transform matrix from frame { } to {0} in iterative program, algorithms become simpler and thereby can be used to enhance the property of real-time in Manipulator control.
{"title":"A Fast Algorithm for Velocity and Acceleration at Manipulator's End-effector","authors":"Wang Fei-fei, An Kai","doi":"10.1109/IMCCC.2011.113","DOIUrl":"https://doi.org/10.1109/IMCCC.2011.113","url":null,"abstract":"Differentiating angular displacement and displacement at Manipulator's end-effectors directly, analysis expressions of angular velocity, linear velocity, angular acceleration and acceleration are given in this paper. According to these expressions, two iterative programs about velocity and acceleration at End-effectors is given as well as. Having no use for counting transform matrix from frame { } to {0} in iterative program, algorithms become simpler and thereby can be used to enhance the property of real-time in Manipulator control.","PeriodicalId":446508,"journal":{"name":"2011 First International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125633766","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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