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International Joint Conference on Neural Networks (IJCNN)

作者： K. Tanaka T. Kurita F. Meyer L. Berthouze T. KAWABE Graduate School of System and Information Engineering University of Tsukuba Tsukuba Ibaraki Japan AIST central 2 National Institute for Advanced Industrial Science and Technology Tsukuba Ibaraki Japan Department of Computer Science University of Tsukuba Tsukuba Ibaraki Japan

The potential of brain-computer interfaces (BCI) in serving a useful purpose, e.g., supporting communication in paralyzed patients, hinges on the quality of the classification of the brain waves. This paper proposes a novel method to construct a classifier with improved generalization performance. A feature selection method is applied to features calculated from the EEG signals so that unnecessary or redundant features can be removed and only effective features are left for the classification task. Kernel support vector machines (kernel SVM) were used as a classifier and the best combinations of features were searched by backward stepwise selection, i.e., by eliminating unnecessary features one by one, and by evaluating the resulting generalization performance through cross validation. Experiments showed that the generalization performance of the classifier constructed from the best set of features was higher than that of the classifier using all features.

关键词： Brain computer interfaces Support vector machines Support vector machine classification Electroencephalography Kernel Electrodes Signal processing Fasteners Communication system control Spinal cord injury

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Adaptivity, personalization, and the semantic Web

Adaptivity, personalization, and the semantic Web

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Joint International Workshop on Adaptivity, Personalization and the Semantic Web, APS'06

作者： Cristea, Alexandra Stewart, Craig Sirmakessis, Spiros Information System Department Faculty of Mathematics and Computing Science Technical University Eindhoven Den Dolech 2 5600 MB Eindhoven Netherlands Department of Electronic Engineering Queen Mary University of London Mile End Road London E1 4NS United Kingdom Research Academic Computer Technology Institute D. Maritsas Building N. Patras University Campus Kazantzaki Str. Patras Greece

ISBN: (纸本)1595934537

The aim of this workshop is to bring together researchers and practitioners in the fields of web engineering, adaptive hypermedia, semantic web technologies, knowledge management, information retrieval, user modelling, and other related disciplines which provide enabling technologies for personalization and adaptation on the World Wide Web. The workshop will consist of 6 papers (4 full, and 2 short), followed by a panel discussion.

关键词： Semantic Web

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Reliability analysis of phased-mission systems: a practical approach

Reliability analysis of phased-mission systems: a practical ...

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Annual Symposium on Reliability and Maintainability (RAMS)

作者： M. Alam Min Song S.L. Hester T.A. Seliga Department of Electrical Engineering & Computer Science University of Tolctlo and Eötvös Lárand University Toledo OH USA Department of Electrical and Computer Engineering Old Dominion University Norfolk VA USA Alternative Systems Inc. Maumee OH USA Volpe National Transportation System Center Cambridge MA USA

This paper presents a novel and simple approach to reliability analysis of phased-mission systems. The technique presented in this paper transforms a phased-mission system into several non-phased-mission systems, and thus allows each phase to be modeled separately. The mission succeeds as long as every phase successively executes its requirements, and failed component(s) of any phase is(are) repaired so that the system is in a successful state before as well as after it begins the next phase. Alternative mission success scenarios are also readily definable within this context. The benefit of this simplified approach is that it provides a practical implementation for the reliability analysis of phased-mission systems. The different phases of the system are computed independently, and the duration and the structure of the phases are left to the designer or manager. If the requirements of the mission change during execution of the mission (duration of a phase or the sequence of phases), the impact of the change in mission objectives is easily found without recomputing the applicable or operative Markov model. This is due to the fact that all of the reliability analysis data are presented over the entire mission duration consisting for all phases, and the initial and final probabilities can easily be found by examining the output reliability data instead of recomputing the model

关键词： Aerospace electronics Cooling Transportation Aerospace industry Chemical industry Performance evaluation Data analysis Transmission line measurements Industrial electronics Nuclear electronics

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An Adaptive Filter for INS/GPS Integrated Navigation system

An Adaptive Filter for INS/GPS Integrated Navigation System

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Computational engineering in systems Applications, CESA, IMACS Multiconference on FLAGGED

作者： Hang Shi Zhou Wu Baosheng Liu State Key Laboratory of Intelligent Technology and System Department of Computer Science and Technology Tsinghua University Beijing China School of Mechatronical Engineering and Automation National University of Defense Technology Changsha China Department of Automation Tsinghua University Beijing China

The integrated navigation system, specially the system based on GPS and INS, is a leading trend of navigation technology, and some of typical integrated navigation systems have been developed and tested in the past few years (Farrell, 1998). But due to the complex application circumstance, it is difficult to describe the noise statistical property accurately. In this paper, a modified adaptive filter algorithm is presented for INS/GPS integrated navigation system. At first, an improved Kalman filter and H infin robust filter are explicitly represented for INS/GPS integrated navigation system. Meanwhile, a standard for judging that whether the filter trends to divergence is proposed to combine the two methods. Aiming at the detail position/velocity integrated mode, the computer simulation result of INS/GPS integrated navigation show that this method can restrain the divergence effectively and has better adaptive ability

关键词： Adaptive filters Global Positioning system Noise robustness Filtering algorithms Automation Noise reduction Aircraft navigation systems engineering and theory Application software Laboratories

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Autonomous Distributed Genetic Approach for Route Planning Problems

Autonomous Distributed Genetic Approach for Route Planning P...

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SICE Annual Conference

作者： M. Noishiki K. Sakakibara I. Nishikawa H. Tamaki K. Nakayama College of Information Science and Engineering Ritsumeikan University Kusatsu Japan Department of Computer and System Engineering Kobe University Kobe Japan NICT Universal Media Research Center Kyoto Japan ATR Cognitive Information Science Laboratories Kyoto Japan. E-mail: knakayama@atr.jp

We consider the pickup and delivery problem with time windows as a general model of the practical transportation problems in automated guided vehicle systems, logistic systems, etc. The problem requires that any paired pickup and delivery locations have to be served by one vehicle and the pickup location has to be scheduled before the corresponding delivery location in the route. In this paper, to search a set of routes close to the optimal one, we propose the autonomous distributed genetic approach based on the search space decomposition for the problem. In this approach, first, the search space is divided into sub-spaces based on the number of customers loaded in each vehicle. Then, GA is applied in each sub-space. In addition, the dynamic separation is applied for an efficient search. The effectiveness of the search space decomposition is evaluated by computational experiments

关键词： Remotely operated vehicles Electronic mail Information science Genetic engineering Logistics Space vehicles Vehicle dynamics Genetic algorithms Transportation Educational institutions

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A Study of real-time EMG-driven Arm Wrestling Robot

A Study of real-time EMG-driven Arm Wrestling Robot

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IEEE International Conference on Robotics and Biomimetics

作者： Quanjun Song Huanghuan Shen Shuangwei Xie Zhen Gao Ming Liu Yu Yong Yunjian Ge Department of Automation University of Science and Technology Hefei Anhui China Laboratory of Robot Sensing System Institute ofIntelligent Machines Chinese Academy and Sciences Hefei Anhui China Department of Electrical and Computer Systems Engineering Monash University Melbourne VIC Australia

An EMG-driven arm wrestling robot (AWR) is being developed in our laboratories for the purposes of studying neuromuscular control of arm movements. The AWR arm have 2-DOF, integrated with mechanical arm, elbow/wrist force sensors, servo motor, encoder, 3-D MEMS accelerometer, and USB camera, is used to estimate tension developed by individual muscles based on recorded electromyograms (EMGs). The surface electromyographic signal form the upper limb is sampled from a real player in same conditions. By using the method of wavelet packet transformation (WPT) and auto regressive model (AR), the characteristics of EMG signals can be extracted. Artificial neural network is adopted to estimate the elbow joint torque. The effectiveness of the humanoid algorithm using torque control estimated via WRT and neural network is confirmed by experiments. The purpose of this paper is to describe the design objectives, fundamental components and implementation of our real-time, EMG-driven AWR arm.

关键词： Robot sensing systems Elbow Electromyography Artificial neural networks Laboratories Neuromuscular Wrist Force sensors Servomechanisms Servomotors

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Breakdown conditioning chacteristics of precision-surface-treatment- electrode in vacuum

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IEEJ Transactions on Fundamentals and Materials 2006年第8期126卷 763-768页

作者： Kato, Kastumi Fukuoka, Yuji Inagawa, Yukihiko Saitoh, Hitoshi Sakaki, Masayuki Okubo, Hitoshi Department of Electric Engineering and Computer Science Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan AE Power System Corporation 515 Simonakamizo Higashi Makado Numazu 410-8588 Nagoya University Japan AE Power Systems Corporation

Breakdown (BD) characteristics in vacuum are strongly dependent on the electrode surface condition, like the surface roughness etc. Therefore, in order to develop a high voltage vacuum circuit breaker, it is important to optimize the surface treatment process. This paper discusses about the effect of precision-surface-treatment of the electrode on breakdown conditioning characteristics under non-uniform electric field in vacuum. Experimental results reveal that the electrode surface treatment affects the conditioning process, especially the BD voltage and the BD field strength at the initial stage of the conditioning.

关键词： Vacuum technology

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Adaptive Global Terminal Sliding Mode Control for Anti-Warship Missiles

Adaptive Global Terminal Sliding Mode Control for Anti-Warsh...

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World Congress on Intelligent Control and Automation (WCICA)

作者： Xiangrong Tong Hongchao Zhao Guohu Feng Institute of Computer Science and Technology Yantai University Yantai Shandong China Department of Scientific Research Naval Aeronautical Engineering Institute Yantai Shandong China Research Institute of Flight Vehicle's Control System Naval Aeronautical Engineering Institute Yantai Shandong China

The overload control system of anti-warship missiles is researched. The output-redefinition technique is used to eliminate the nonminimum phase characteristics of missile overload output. In order to improve the robustness of the control system in the whole control process, an adaptive global terminal sliding mode (TSM) control method is proposed to control the missile's modified output. With this method, the system states lie in the global TSM at the onset of the motion, hence the reaching phase is removed from the control system. The adaptive controller is applied to estimate the upper bound of the lumped uncertainty. The validity of the proposed method is demonstrated through a simulation example

关键词： Programmable control Adaptive control Sliding mode control Missiles Control systems Robust control Process control Motion control Adaptive systems Upper bound

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Hierarchical clustering method based on data fields

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Tien Tzu Hsueh Pao/Acta Electronica Sinica 2006年第2期34卷 258-262页

作者： Gan, Wen-Yan Li, De-Yi Wang, Jian-Min Department of Computer Science and Technology Tsinghua University Beijing 100084 China Institute of Electronic System Engineering Beijing 100039 China

Clustering is a promising application area for many fields including statistics, pattern recognition, data mining, etc. The effectiveness and efficiency of existing clustering techniques, however, is somewhat limited, owing to the huge amounts data collected in databases. According the theory of fields in physics, a hierarchical clustering method based on data fields is presented. The basic idea is that the field models is introduced to describe the virtual interaction among data objects in data space and the hierarchical partitioning of the original dataset is then performed by iteratively simulating the interaction and movement of the data objects in the fields. Experimental results show that the proposed approach not only enjoys favorite clustering quality and requires no careful parameters tuning, but also has a time complexity approximately linear with respect to the size of dataset.

关键词： Hierarchical systems

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Adaptive input estimation method combining finite element scheme for inverse jet flow heat flux estimating

Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute ...

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Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute of Technology 2006年第2期34卷 21-32页

作者： Chen, Tai-Sheng Jang, Horng-Yuan Chen, Tsung-Chien Tuan, Pan-Chio Department of System Engineering Chung Cheng Institute of Technology National Defense University Taiwan Department of Computer Science and Information Engineering Nan Kai Institute of Technology Taiwan

A missile launch will produce a high temperature jet flow, the high temperature jet flow effects on the design and prime cost for fireproof decking is considered. This work presents an on-line inverse method based on the adaptive input estimation method that combines the finite element scheme to estimate unknown jet flow heat flux. The temperature is measured using a thermocouple at the outer surface of a steel plate. The input estimator develops a recursive relation between the observed residual sequence value with unknown heat flux and a theoretical residual sequence to improve the state estimate accuracy and avoid the divergence problem. A recursive least square estimator is derived that uses the residual innovation sequence to compute the magnitude of the unknown jet flow heat flux. The superior capabilities of the proposed method are analyzed and demonstrated using several typical cases with time varying jet flow heat flux input. The results show that the proposed method has the advantages of stability and good accuracy.

关键词： Adaptive input estimation method Finite element scheme Jet flow heat flux

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