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2010 International Workshop on Chaos-Fractal Theories and Applications最新文献

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Face Detection Based on Fractal and Complexion Model in the Complex Background 复杂背景下基于分形和肤色模型的人脸检测
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.108
Zhiliang Zhu, Jiangning Gao, Hai Yu
{"title":"Face Detection Based on Fractal and Complexion Model in the Complex Background","authors":"Zhiliang Zhu, Jiangning Gao, Hai Yu","doi":"10.1109/IWCFTA.2010.108","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.108","url":null,"abstract":"In this paper, a new face detection algorithm based on fractal theory and complexion model is proposed. On the basis of the traditional face detection, the new algorithm estimated the fractal dimension of face area to exclude the non-face area and extract the face area fast and accurately. Furthermore, its calculation is simple and it can realize multi-angle detection in the complex background. As well as the new algorithm can overcome the shortcomings of high misdetection and low capability in adapting to changes of traditional way. Simulations are carried out with detailed analyses, which demonstrating the superior accuracy and high efficiency of our algorithm.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128572240","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
Feature Analysis Mechanical Fault Signals Based on Correlation Dimension and Complexity 基于关联维数和复杂度的机械故障信号特征分析
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.20
Bingcheng Wang, Z. Ren
{"title":"Feature Analysis Mechanical Fault Signals Based on Correlation Dimension and Complexity","authors":"Bingcheng Wang, Z. Ren","doi":"10.1109/IWCFTA.2010.20","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.20","url":null,"abstract":"In connection with the nonlinear dynamic characteristics shown from the performance of fault rotating mechanical system, based on the research and analysis, correlation dimension and complexity can be used to characterize the system state of motion. The authors propose the analysis method of correlation dimension and complexity to the signal feature of mechanical fault. Using theory of phase space reconstruction, simulating fault signal of rotating machine is reconstructed. In order to reconstruct the phase space which can be adequately reflect the movement characteristics of the system, the time delay and embedding dimension are discussed emphatically, on this basis, the correlation dimension are calculated. From the analysis and calculation on simulation of different fault signals, it shows that under different rotating machinery fault conditions, its correlation dimension, and complexity are significantly different, which verifies that the these nonlinear feature quantities are effective parameters for fault information and they are excellent parameters in terms of extraction and recognition of fault feature. Studies have shown that, these nonlinear feature quantities can reflect the nonlinearity of the system. If combine these parameters, supplemented mutually, verifies mutually, it will be more conducive to recognize and analyze fault signal recognition, enhance the reliability, and thus to study the fault diagnosis of complexity rotating machinery in a more effective way.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121434138","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
New Estimations of Globally Exponentially Attractive Sets and Synchronization Controlling of a Class of Chaotic Finance Systems 一类混沌金融系统全局指数吸引集的新估计及同步控制
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.19
Jigui Jian, Hui Yu
{"title":"New Estimations of Globally Exponentially Attractive Sets and Synchronization Controlling of a Class of Chaotic Finance Systems","authors":"Jigui Jian, Hui Yu","doi":"10.1109/IWCFTA.2010.19","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.19","url":null,"abstract":"In the paper, we firstly give a new accurate spheroid estimation formula of the globally exponentially attractive set for all positive parameters by constructing a generalized positive definite Lyapunov functions with radially unbound. Secondly, based on inequalities techniques, linear feedback control with one input or two inputs is proposed to realize the globally exponential synchronization of two chaotic finance systems. The controllers here designed have simple structure. The numerical simulation results are in line with the theoretical analysis.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113982739","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: 1
Coordinated Control of Multi-agent Dynamical Systems under Switched Network Topology 交换网络拓扑下多智能体动态系统的协调控制
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.85
Xuhui Zhou
{"title":"Coordinated Control of Multi-agent Dynamical Systems under Switched Network Topology","authors":"Xuhui Zhou","doi":"10.1109/IWCFTA.2010.85","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.85","url":null,"abstract":"This paper considers a group of mobile agents moving in Euclidean space with switched network topology. We propose a feedback control algorithm that achieves velocity consensus with weighted directed switched velocity graph and stabilize all position neighboring agents inter-distance to a same desired value. The main results are that the position and velocity graph remaining connected are satisfied at all times, then desired flocking motion can always be realized. Furthermore, if the initial energy of the system is less than a certain value, then collision can be avoided.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130325316","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
Lag Synchronization of Delayed Chaotic Systems Using Neural Network-Based Sliding-Mode Control 基于神经网络滑模控制的延迟混沌系统滞后同步
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.95
R. Mei, Qingxian Wu, Changsheng Jiang
{"title":"Lag Synchronization of Delayed Chaotic Systems Using Neural Network-Based Sliding-Mode Control","authors":"R. Mei, Qingxian Wu, Changsheng Jiang","doi":"10.1109/IWCFTA.2010.95","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.95","url":null,"abstract":"In this paper, the sliding-mode lag synchronization control scheme is proposed based on the neural network to synchronize two different delayed chaotic systems. An integral delayed sliding surface is presented to design the sliding mode control. The lag synchronization controller is achieved by combining the RBF (radial basis function) neural network with sliding-mode control. Numerical simulations are presented to demonstrate the effectiveness of the proposed sliding-mode lag synchronization control scheme.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130781346","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: 1
A Parallel Algorithm for Approximating One Dimensional Unstable Manifold of Discrete Dynamical Systems 离散动力系统一维不稳定流形逼近的并行算法
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.26
Huimin Li, Yangyu Fan, Jing Zhang
{"title":"A Parallel Algorithm for Approximating One Dimensional Unstable Manifold of Discrete Dynamical Systems","authors":"Huimin Li, Yangyu Fan, Jing Zhang","doi":"10.1109/IWCFTA.2010.26","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.26","url":null,"abstract":"This paper presents a parallel algorithm for computing one dimensional unstable manifold of a hyperbolic fixed point of discrete dynamical system. It is pointed out that parallel computing can be realized by subdividing the unstable manifold into mutually independent subsections. In each subsection, the one dimensional unstable manifold is grown by forward iteration. Curvature constraint and distance control technique are applied to ensure the accuracy of the algorithm. An easy-to-implement recursive program is proposed for the interpolation of points. The simulation result shows that parallel computation is very accurate as well as efficient.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134508513","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
Libration Point Orbits and Its Invariant Manifolds Structure 振动点轨道及其不变流形结构
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.56
D. Qiao, Rui Xu, H. Shang
{"title":"Libration Point Orbits and Its Invariant Manifolds Structure","authors":"D. Qiao, Rui Xu, H. Shang","doi":"10.1109/IWCFTA.2010.56","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.56","url":null,"abstract":"The invariant manifold structures of the libration points for restricted three-body problem will provide the framework for understanding complex dynamical phenomena. These stable and unstable invariant manifold tubes associated to libration point orbits can be used to construct new low-energy spacecraft trajectories. So, in this paper, we will introduce the libration point and its invariant manifolds structure. First, we introduce the restricted three-body problem, libration point and Halo orbit. Then, we discuss and provide the stable and unstable invariant manifold tubes associated to libration point orbits based on manifolds and dynamical system theory. Finally, we apply these dynamical properties to design the capture trajectory in planetary exploration.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132356562","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
Alternative Attractors and Regime Shift in a Stochastic Logistic Model 随机Logistic模型中的可选吸引子和状态转移
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.73
Jianfeng Feng, Linfeng Zhu, W. Meng, Hongli Wang
{"title":"Alternative Attractors and Regime Shift in a Stochastic Logistic Model","authors":"Jianfeng Feng, Linfeng Zhu, W. Meng, Hongli Wang","doi":"10.1109/IWCFTA.2010.73","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.73","url":null,"abstract":"There will be different stable states or attractors in ecosystem under the same external conditions. In this paper, one stochastic logistic model under external fluctuations was established. The existence of the alternative attractors and regime shift are investigated. Also, the mean first passage time is studied using stochastic dynamics theory. Results showed that there are different stable attractors under a parameter region of maximum rate of grazing. The noise intensity can directly lead to regime shifts of the system. In addition, with the increasing of the noise intensity, the mean first passage time of the system decreased.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131805817","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
The Chaos Analysis of the Unbalanced International Trade at the Later Stage of the Global Financial Crisis 全球金融危机后期国际贸易失衡的混沌分析
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.105
H. Qin
{"title":"The Chaos Analysis of the Unbalanced International Trade at the Later Stage of the Global Financial Crisis","authors":"H. Qin","doi":"10.1109/IWCFTA.2010.105","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.105","url":null,"abstract":"The paper has made the analysis for the unbalanced international trade at the later stage of the global financial crisis. Through the analysis of the reason for the unbalanced international trade, the paper has argued that the broken symmetric conditions have resulted in the international trade unbalance. Based on it, the paper has made the chaos analysis of the unbalanced international trade at the later stage of the global financial crisis.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133430793","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
The Chaos Anti-control in the Willamowski-Rössler Reaction Willamowski-Rössler反应中的混沌反控制
2010 International Workshop on Chaos-Fractal Theories and Applications Pub Date : 2010-10-29 DOI: 10.1109/IWCFTA.2010.60
H. Niu, Heyuan Wang, Qingling Zhang
{"title":"The Chaos Anti-control in the Willamowski-Rössler Reaction","authors":"H. Niu, Heyuan Wang, Qingling Zhang","doi":"10.1109/IWCFTA.2010.60","DOIUrl":"https://doi.org/10.1109/IWCFTA.2010.60","url":null,"abstract":"In this paper, a chemical reaction which was first proposed by Willamowski and Rössler is introduced. In order to improve the effect of chemical reactions, a parameter adaptive method is designed to make the chemical reaction chaotic. This adaptive control method can make the parameters converges to the expected target value and assurance the system convergent under the parameter initial values with a great interference. By comparing, the control method in our paper is illustrated more flexible. The performance of proposed method is examined by numerical simulation.","PeriodicalId":157339,"journal":{"name":"2010 International Workshop on Chaos-Fractal Theories and Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132729122","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
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