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2009 International Workshop on Intelligent Systems and Applications最新文献

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Study on Chaotic Behavior of Low-Frequency Noise in Semiconductor Laser 半导体激光器低频噪声混沌行为研究
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5073134
Sitnov Yu, Shuxu Guo, Feng-li Gao
{"title":"Study on Chaotic Behavior of Low-Frequency Noise in Semiconductor Laser","authors":"Sitnov Yu, Shuxu Guo, Feng-li Gao","doi":"10.1109/IWISA.2009.5073134","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5073134","url":null,"abstract":"Based on wavelet transformation and chaos theory, low frequency noise in semiconductor laser is studied. The feasibility of chaotic noise model is discussed and prescribed in detail based on techniques of power spectrum, Lyapunov exponents and correlation dimension. And in theory, it also explains the reasons for this chaos phenomenon. The rigorous chaotic character of low-frequency noise in semiconductor laser is found, which is a theoretical basis for the correlative investigation based on semiconductor laser reliability.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"26 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74326190","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}
引用次数: 0
Application of Variable Structure Theory to Direct Field-Oriented Induction Motor Speed Controllers 变结构理论在直接磁场定向异步电机速度控制器中的应用
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072752
Junhong Li, Zhennan Hong, Wusong Yang
{"title":"Application of Variable Structure Theory to Direct Field-Oriented Induction Motor Speed Controllers","authors":"Junhong Li, Zhennan Hong, Wusong Yang","doi":"10.1109/IWISA.2009.5072752","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072752","url":null,"abstract":"In this paper an variable structure speed controller for induction motor(IM) is developed, which combines the merits of sliding mode variable structure theory, direct field-oriented control (DFOC) and adaptive algorithm. Firstly, a sliding mode controller is designed and the adaptive algorithm is adopted to adjust the sliding gain in order to restrain chattering. And then a sliding mode flux observer is used to observe the rotor flux accurately. All the control strategies are derived in the sense of Lyapunov stability theory so that the stable tracking performance can be guaranteed under the occurrence of system uncertainties and external disturbances. Finally, some simulation results are provided to validate the effectiveness and robustness of the proposed control scheme.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"260 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73349381","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}
引用次数: 5
Fuzzy-PID Compound Control for Ultra-Precision Worktable 超精密工作台的模糊pid复合控制
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072881
Ping Li, Hongmei Gao, Xiao-ping Liu
{"title":"Fuzzy-PID Compound Control for Ultra-Precision Worktable","authors":"Ping Li, Hongmei Gao, Xiao-ping Liu","doi":"10.1109/IWISA.2009.5072881","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072881","url":null,"abstract":"It is difficult to establish mathematical mode for ultra-precision worktable control system, because there are several disadvantages in the system, such as varying as time, nonlinear and so on. Fuzzy control has good robustness and other advantage, such as it need not establish the mathematical mode of controlled system, but steady state precision is bad. So a new control method which combined fuzzy controller with PID controller was proposed. Because different control schemes are used in different period in whole control process, the controller has inherited character of PID control, in which there are no static error and good static stability, and character of fuzzy control, in which there are strong compatibility and good dynamic property. Simultaneously, it gets rid of the disadvantages of them. Simulation experiment for ultra precision worktable control system has been carried on by Matlab software. PID control and fuzzy-PID control have been compared. Simulation results can prove that fuzzy- PID control can achieve better results. It was an efficient control method for the ultra-precision worktable.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73419240","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}
引用次数: 2
Optimization and Application Research of Wavelet Neural Network 小波神经网络的优化与应用研究
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072991
Guihua Li, Teng Huang, Minwei Jiang, Ronghua Yue
{"title":"Optimization and Application Research of Wavelet Neural Network","authors":"Guihua Li, Teng Huang, Minwei Jiang, Ronghua Yue","doi":"10.1109/IWISA.2009.5072991","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072991","url":null,"abstract":"In allusion to the problems that the conventional wavelet neural network has disadvantages of training slowly, convergence to the local minimum easily and poor approximation performance, two aspects including initial parameters selection and network training methods were selected to be optimized after analyzing its approximation performance. A kind of self-adaptive method to get the number of hidden layer nodes was put forward. And the WNN model based on SCG optimization algorithm was constructed, combining with SCG algorithm and the method of setting the initial parameters based on self-correlation. The model has been used to predict the settlement of high-rise building foundation under complicated geological conditions, and the results showed that the model not only solved the problems of approximation performance very well, but also is better than both of the BP neural network and the conventional WNN based on BP algorithm.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"17 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73886054","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}
引用次数: 2
A Rough-Set Based Approach to Predict Consumers' Brand Preference 基于粗糙集的消费者品牌偏好预测方法
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072671
Nan Cui, Qingan Cui
{"title":"A Rough-Set Based Approach to Predict Consumers' Brand Preference","authors":"Nan Cui, Qingan Cui","doi":"10.1109/IWISA.2009.5072671","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072671","url":null,"abstract":"Understanding how certain media types affect consumers' preference for foreign brands is a major concern for managers of Multinational Corporations to make better media choices in advertising campaigns. However, little research has been conducted to facilitate managers' decision. A rough set based approach to predict consumers' preference for foreign and domestic brands in their purchasing decisions is proposed. Using data collected from a large scale survey, a case study is conducted to illustrate the application and advantages of the proposed approach.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"56 2 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73910279","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}
引用次数: 2
The Elasticity Algorithm for Automated Route Design Based on Electronic Chart 基于电子海图的自动路线设计弹性算法
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5073183
Q. Tang, Yong Chen, Ge Chen, Tang Qing-hui
{"title":"The Elasticity Algorithm for Automated Route Design Based on Electronic Chart","authors":"Q. Tang, Yong Chen, Ge Chen, Tang Qing-hui","doi":"10.1109/IWISA.2009.5073183","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5073183","url":null,"abstract":"Automated sea route design is an important part for the application of electronic chart. An elasticity algorithm based on the grid chart environmental model is brought forward to search the shortest safe sea route automatically by making full use of the adjacency of the grids. The algorithm has the advantage of good stability, briefness and high searching efficiency. The experiment results show that the method is applicable for the sea route planning of complicated large-sized sea areas.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84274239","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}
引用次数: 0
Building Learner Profile for Group Learning Recommender System from Learning Process 从学习过程构建小组学习推荐系统的学习者特征
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072769
Xin Wan, Toshio Okamoto
{"title":"Building Learner Profile for Group Learning Recommender System from Learning Process","authors":"Xin Wan, Toshio Okamoto","doi":"10.1109/IWISA.2009.5072769","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072769","url":null,"abstract":"We propose a learning process based approach to address the well-known implicit profiling method in group learning recommender system. Our approach makes use of likelihood control to integrate the learning step coefficient of each learner into ratings. We introduce a preference model comprising both user-user and user-item relationships in recommender systems, and present a motivating example of our work based on the model. We empirically evaluated the effectiveness of our approach, which shows that the proposed approach has a good recommendation performance in e-learning recommender system.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"167 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84989612","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}
引用次数: 2
Modeling and Simulation for an Aircraft of Seamless Aeroelastic Wing 一种无缝气动弹性机翼飞机的建模与仿真
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072957
Zhengping Wang, Shijun Guo
{"title":"Modeling and Simulation for an Aircraft of Seamless Aeroelastic Wing","authors":"Zhengping Wang, Shijun Guo","doi":"10.1109/IWISA.2009.5072957","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072957","url":null,"abstract":"The purpose of this paper is to discuss the method of modeling and simulation software design for an aircraft of seamless aeroelastic wing. An aeroelastic wing structure model is established, and then a flight control model is linearized by small disturbance method. The characteristic for aeroelastic wing aerodynamic force varying with the flight speed and the control surface deflection is analyzed through some numerical calculation curves. The analyzing results show that the main challenge is how to achieve a specified rolling rate for the aircraft when the control effectiveness drops down within the flight envelope. In order to resolve this problem, the simulation software integrated dynamics force calculating and control system design is developed and a PID control law is designed. The simulation results show that the control plans are feasible to meet the requirement for rolling control of aeroelastic wing aircraft designed by this paper.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"212 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79431701","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}
引用次数: 0
Analysis Effects of Lead on Chlorophyll Fluorescence of Wheat Leaves with Confocal Software 利用共聚焦软件分析铅对小麦叶片叶绿素荧光的影响
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072732
Dongwu Liu, Zhiwei Chen
{"title":"Analysis Effects of Lead on Chlorophyll Fluorescence of Wheat Leaves with Confocal Software","authors":"Dongwu Liu, Zhiwei Chen","doi":"10.1109/IWISA.2009.5072732","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072732","url":null,"abstract":"Soil contamination with heavy metals will lead to losses in agricultural yield and hazardous health effects as they enter into the food chain. The lead contamination exerts a wide range of adverse effects on growth and metabolism of plants. In present studies, we investigated the effect of lead on chlorophyll fluorescence of wheat leaves with confocal microscope. The digital images of chlorophyll in the wheat leaves were acquired with a computer linked to confocal microscope. Then the fluorescence intensity of chlorophyll was quantified with confocal software. The results showed that the fluorescence intensity of chlorophyll was higher than the control at 100 and 500 Pb mg kg\u0000 -1\u0000 DW soil on fourteenth and twenty-first days. However, the fluorescence intensity of chlorophyll was lower than the control at 2000 Pb mg kg\u0000 -1\u0000 DW soil on fourteenth and twenty-first days. On twenty-eighth day, the fluorescence intensity of chlorophyll was higher than the control at 100 Pb mg kg\u0000 -1\u0000 DW soil, but the fluorescence intensity of chlorophyll was lower than the control at 500 and 1000 Pb mg kg\u0000 -1\u0000 DW soil. Moreover, we established a method to analysis the effects of heavy metals on chlorophyll fluorescence with the digital images of confocal microscope, which is an easy and simple job.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"391 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79677691","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}
引用次数: 2
Complex System Reliability Allocation Based on Fuzzy Decision Method 基于模糊决策方法的复杂系统可靠性分配
2009 International Workshop on Intelligent Systems and Applications Pub Date : 2009-05-23 DOI: 10.1109/IWISA.2009.5072787
Hong-bin Zhang, Zhi-xin Jia
{"title":"Complex System Reliability Allocation Based on Fuzzy Decision Method","authors":"Hong-bin Zhang, Zhi-xin Jia","doi":"10.1109/IWISA.2009.5072787","DOIUrl":"https://doi.org/10.1109/IWISA.2009.5072787","url":null,"abstract":"For the complex system, there are many influencing factors of the reliability, and apart of the factors can only be assessed qualitatively. Furthermore, the complex system is composed by different type sub-systems. So it is difficult to allocate the reliability of system to every subsystem by traditional reliability allocation method. So, a new reliability allocation method which based on the fuzzy decision is proposed. The basic idea and the steps are introduced. And the formula for calculating the reliability of sub-system is defined. At last, an example is calculated by this method. It is proved that the result is accord with the principles of reliability allocation completely.","PeriodicalId":6327,"journal":{"name":"2009 International Workshop on Intelligent Systems and Applications","volume":"23 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79758477","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}
引用次数: 9
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