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IEEE International Workshop on Cellular Nanoscale Networks and their Applications, (CNNA)

作者： Gergely Timar Csaba Rekeczky Analogic and Neural Computing Systems Laboratory of the Computer and Automation Institute of the Hungarian Academy of Sciences Budapest Hungary Information Technology Department Pazmany Peter Catholic University Budapest Hungary

A multitarget tracking framework implemented on the Bi-i platform is presented. The demonstration applications include a target tracking system with laser actuation, an attention-selection algorithm and a laser dot de... 详细信息

关键词： Navigation Target tracking Cellular neural networks Application software computer networks Laser theory Circuits and systems Circuit testing Laboratories automation

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Automated Vehicles' Work Planning in Flexible Manufacturing Systems

Automated Vehicles' Work Planning in Flexible Manufacturing ...

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International Conference on Emerging Technologies and Factory automation (ETFA)

作者： Wojciech Muszynski Zbigniew Banaszak Izabela Tomczuk-Pirog Institute of Computer Science Automation and Robotics Wroclaw University of Technology Wroclaw Poland Department of Computer Science and Management Technical University Koszalin Koszalin Poland Department of Management and Production Engineering Technical University of Opole Opole Poland

The problem of rules setting in coordination of automated vehicles access to shared system resources (sections of their transportation paths) which assure a deadlock free and starvation free flow of the executed processes belongs to NP-hard problems. Assuming that there are local (controlling access to shared resources) rules of priority dispatching, the problem deals with setting conditions sufficient for a pair (initial state, set of priority dispatching rules). The assumed knowledge base way of specifying a transportation subsystem leads to solving a logic-algebraic method decision problem. In this regard, the working knowledge representation synthesis method constitutes a significant contribution to the development of programming methods aimed at distributed control procedures design.

关键词： Vehicles Flexible manufacturing systems Transportation Knowledge representation Dispatching Logic computer science Robotics and automation System recovery Control system synthesis

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A NEW HYBRID WAVELET-KALMAN FILTER METHOD FOR THE ESTIMATION OF DYNAMIC SYSTEM

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Journal of Electronics(China) 2006年第1期23卷 139-143页

作者： Wen Chenglin Xie Jin Zhou Funa Wen Chuanbo School of Automation Hangzhou Dianzi University Hangzhou 310018 China School of Computer ＆ Information Engineering Henan University Kaifeng 475001China Dept of Accounting Guangdong Vocational Institute of Science and Technology Guangzhou 510640 China

A new hybrid wavelet-Kalman filter method for the estimation of dynamic system is developed, Using this method, the real-time multiscale estimation of the dynamic system is implemented, and the observation equation established is for the object signal itself rather than its wavelet decomposition. The simulation results show that this method can be used to estimate the object's state of the stacked system, which is the foundation of multiscale data fusion; besides the performance of the new algorithm developed in the letter is almost optimal.

关键词： Real-time Multiscale estimation Dynamic system Wavelet transform Kalman filter

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Tracking Trajectory Planning of Space Manipulator for Capturing Uncontrolled Spinning Satellite

Tracking Trajectory Planning of Space Manipulator for Captur...

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IEEE International Conference on Mechatronics and automation

作者： Panfeng Huang Jie Yan Yangsheng Xu Wenfu Xu Bin Liang College of Astronautics Northwestern Polytechnical University Xi'an China Automation and Computer-Aided Engineering Chinese University of Hong Kong Hong Kong China Shenzhen Space Technology Center Harbin Institute of Technology Shenzhen China

On-orbit rescuing uncontrolled spinning satellite (USS) using space robot is a great challenge for future space service. The paper mainly presents a trajectory planning method of space manipulator that can track, approach and catch the USS in free-floating situation. According to the motion characteristics of USS, we plan a spiral ascending trajectory for space manipulator to approach towards USS in Cartesian space. However, it is difficult to map this trajectory into the joint space and realize feasible motion in joint space because of kinematic multi-solutions and dynamic singularities of space robot system. Therefore, we utilize an interval algorithm to handle these difficulties. The simulation study verifies that the spiral ascending trajectory can been realized. Moreover, the motion of manipulator is smooth and stable, the disturbance to the base is so limited that the attitude control can compensate it

关键词： Trajectory Spinning Satellites Space technology Orbital robotics Manipulators Space missions Robotics and automation Space shuttles Motion planning

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Applying Support Vector Machine to P2P Traffic Identification with Smooth Processing

Applying Support Vector Machine to P2P Traffic Identificatio...

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International Conference on Signal Processing Proceedings (ICSP)

作者： Yang Liu Rui Wang Heyun Huang Yingsheng Zeng Hangen He Institute of Mechatronics and Automation National University of Defense Technology Changsha China School of Computer Science National University of Defense Technology Changsha China Department of Information Science and Electronics Engineering University of Zhejiang Hangzhou China

Since the emergence of peer-to-peer (P2P) networking in the last 90s, P2P traffic, being a significant portion of the network traffic today, has constituted a highly desirable class for identification. How to improve the accuracy of the P2P traffic identification efficiently is still a challenging problem. The support vector machine (SVM) is a powerful learning mechanism and has shown remarkable success in many applications. In this paper, we propose a new approach for P2P traffic identification, which uses the support vector machine and a new technology called smooth processing. The experiments of identifying P2P traffic show that the generalization performance and the accuracy of identification are improved significantly compared to that of the traditional methods

关键词： Support vector machines Telecommunication traffic Support vector machine classification Peer to peer computing Internet Payloads Cryptography Kernel Mechatronics automation

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Chaos Synchronization of General Complex Dynamical Networks with Coupling Delays

Chaos Synchronization of General Complex Dynamical Networks ...

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World Congress on Intelligent Control and automation (WCICA)

作者： Hong-yong Yang Fu-sheng Wang Hui-feng Zhang Guang-deng Zong Si-ying Zhang School of Information Science and Engineering Northeastern University Shenyang China School of Computer Science and Technology Ludong University Yantai China Institute of Automation Qufu Normal University Yantai China

Many real-world dynamical networks display the feature of complex structure, and the complexity feature of networks has attracted increasing attention from various fields of science and engineering. In this paper, we introduce a general dynamical network with different coupling strength and study the complexity of this network model with time delays. Based on the theories of linear matrix inequalities (LMI), the asymptotical stabilities of the network chaos synchronization for delay-dependent are investigated. We finally use a dynamical chaos network with time delay and specific coupling scheme as an example to illustrate the theoretical results

关键词： Chaos Complex networks Delay effects computer science Erbium Robustness Information science automation computer displays Linear matrix inequalities

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RECURRENCE PLOT BASED STUDY OF DIRECT TORQUE CONTROLLED INDUCTION MACHINES

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IFAC Proceedings Volumes 2006年第8期39卷 101-106页

作者： Zoltán Süto István Nagy Department of Automation and Applied Informatics Budapest University of Technology and Economics Goldmann Györgytér 3. V2. 533. 1111 Budapest Hungary phone: (36-1) 463-1165 fax: (36-1) 463-3163 Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary

The strange behavior of Direct Torque Controlled (DTC) Induction Machine (IM) due to nonlinearity is studied. The nonlinearity is the result of hysteresis comparators. Recurrence Plots (RP) beside the bifurcation diagram are applied to reveal the possible states of the system such as periodic, subharmonic and chaotic states. RP makes it possible to identify various system states without the knowledge of all state variables in a multi-dimensional system, it is enough to acquire only time series of an observable state.

关键词： Nonlinear Systems Chaos Variable-structure Systems Torque Control Induction Machines

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Micro-milling: Simulation of surface generation and experimental analysis of surface roughness

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WSEAS Transactions on Systems 2006年第6期5卷 1293-1300页

作者： Sun, Yazhou Liang, Yingchun Du, Ruxu School of Mechatronics Engineering Harbin Institute of Technology No.92 West Da-Zhi Street Harbin 150001 China Department of Automation and Computer-Aided Engineering The Chinese University of Hong Kong Shatin NT Hong Kong

Micro-milling is a flexible and economical alternative for manufacturing precision miniature components with three-dimensional geometries across a wide range of materials. Meanwhile, in recent years, miniaturized machine tool system has attracted much research. As a result, we built a miniature 3-axis numerical control milling machine tool system with a high speed air turbine spindle and conducted a series of experiments. In this paper, a 2D model of surface generation is proposed based on the minimum cutting thickness. Through simulating the surface topography and computing the arithmetic surface roughness, Ra, the relationship among the surface roughness, the feed per tooth, as well as the cutter geometry is obtained. This model is validated by means of experiments. In order to characterize the surface quality produced by the micro-milling based on the miniaturized machine tool and investigate the factors affecting surface roughness, a surface roughness prediction model, which includes the effects of cutting speed, feed, depth of cut, and the interaction between the two, is established using the experimental design and regression analysis method. Using the model, the influence of the cutting parameters on surface roughness is analyzed and the optimum cutting parameter sets are found.

关键词： Milling machines

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Visual Feature Array based Cognitive polygon recognition using the UFEX text categorizer

Visual Feature Array based Cognitive polygon recognition usi...

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International Conference on Mechatronics (ICM)

作者： Barna Resko Domonkos Tikk Hideki Hashimoto Peter Baranyi Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Hungary Department Telecommunication and Media Informatics Budapest University슠of슠Technology슠and슠Economics Hungary Institute of Industrial Science University of Tokyo Japan

This paper presents a cognitive vision based approach to recognize polygons on a natural image. The approach is based on the visual feature array (VFA), which is a cognitive computational model of the mammalian primary visual processing. VFA, as a multidimensional orthogonal data structure, contains data about the line segment and vertex features in the edge detected input image. Based on the features available in VFA, using the universal feature extractor classifier (UFEX), the problem of polygon categorization and recognition is addressed. The results are compared to solutions by conventional neural networks, such as the learning vector quantization network

关键词： Text recognition Text categorization Image edge detection Image recognition Computational modeling Multidimensional systems Data structures Image segmentation Feature extraction Data mining

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Admittance Measurement and Equivalent Circuits for Piezoceramics Using a Virtual Analyzer

Admittance Measurement and Equivalent Circuits for Piezocera...

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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Fuhliang Wen I. Hsu Department of Mechanical & Computer Aided Engineering Graduate School of Automation & Mechatronics Saint John's University Taipei Taiwan Department of Electrical Engineering Ta-Hwa Institute of Technology Hsinchu Taiwan

The impedance or admittance characteristics of piezoceramics must be recognized by a spectrum analyzer to gain the electromechanical match at resonant frequencies before piezoceramic actuating applications. A virtual analyzer has been developed using an integration technique with a data acquisition card and software Lab VIEW tools. According to the five different mathematical models of equivalent circuits, the most suitable model has been identified to demonstrate the electromechanical feature of piezoceramics. The voltage is inputted onto the piezoceramics and the current sampling simultaneously. Thus, instantaneous admittance levels relative to frequencies are furnished in the functional panel of the virtual analyzer. The measured results from the virtual analyzer and the actual data through a HP-4194A analyzer are compared to validate the performance of the virtual instrument.

关键词： Admittance measurement Equivalent circuits Piezoelectric materials Mathematical model Performance analysis Impedance Character recognition Spectral analysis Resonant frequency Application software

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