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Modelling of ultrasonic motor with dead-zone based on Hammerstein model structure

Journal of Zhejiang University-Science A(Applied Physics & engineering) 2008年第1期9卷 58-64页

作者： Xin-liang ZHANG Yong-hong TAN Department of Automation School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200030 China Laboratory of Intelligent Systems and Control Engineering Guilin University of Electronic Technology Guilin 541004 China

The ultrasonic motor (USM) possesses heavy nonlinearities which vary with driving conditions and load-dependent characteristics such as the dead-zone. In this paper, an identification method for the rotary travelling-wave type ultrasonic motor (RTWUSM) with dead-zone is proposed based on a modified Hammerstein model structure. The driving voltage contributing effect on the nonlinearities of the RTWUSM was transformed to the change of dynamic parameters against the driving voltage. The dead-zone of the RTWUSM is identified based upon the above transformation. Experiment results showed good agreement be- tween the output of the proposed model and actual measured output.

关键词： Ultrasonic motor （USM） Hammerstein model Dead-zone Nonlinearity Identification

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Automatic interpretation of hyperventilation-induced electroencephalogram fitting to visual inspection

Automatic interpretation of hyperventilation-induced electro...

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SICE Annual Conference

作者： Xiu Zhang Xingyu Wang Takenao Sugi Akio Ikeda Takashi Nagamine Hiroshi Shibasaki Masatoshi Nakamura Department of Automation East China University of Science and Technology Shanghai China Research Institute of Systems Control Institute of Advanced Research and Education Saga University Saga Japan Department of Electrical and Electronic Engineering Saga University Saga Japan Department of Neurology Graduate School of Medicine Kyoto University Kyoto Japan Department of System Neuroscience Sapporo Medical University Hokkaido Japan Takeda General Hospital Kyoto Japan

Quantitative analysis and detection of abnormalities for electroencephalogram (EEG) recordings during evoked activities are essential for clinical diagnosis on neurological disorders. However, the process of interpreting EEG is time consuming and requires experienced electroencephalographers (EEGers). In this study, a method of automatic EEG interpretation during hyperventilation was proposed. The purpose is to provide a quantitative interpretation of EEG which is able to conform to EEGers' visual inspection. The final integrated results of automatic interpretation were compared with EEGers' evaluation, and showed high consistence.

关键词： Inspection Electroencephalography Medical diagnostic imaging Electrodes Hospitals Clinical diagnosis Scalp Rhythm Automation Educational technology

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Recently developed approaches for solving blind deconvolution of MIMO-IIR systems: Super-exponential and eigenvector methods

Recently developed approaches for solving blind deconvolutio...

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IEEE International Symposium on Circuits and systems

作者： Kawamoto, Mitsuru Inouye, Yujiro Kohno, Kiyotaka National Institute of Advanced Industrial Science and Technology (AIST) Department of Electronic and Control Systems Engineering Shimane University Japan Department of Electronic Control Engineering Yonago National College of Technology Japan

ISBN: (纸本)9781424420780

Recently we develop two kinds of approaches, that is, the super-exponential method (SEM) and the eigenvector method (EVM), of which both can achieve the blind deconvolution for MIMO-IIR systems. It is shown that these methods are closely related each other. Based on this fact, we propose a new SEM incorporated with the EVM. Simulation results will be presented for showing the validity of the proposed method.

关键词： Eigenvalues and eigenfunctions

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Fundamental research on polymer material as artificial muscle

Fundamental research on polymer material as artificial muscl...

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SICE Annual Conference 2008 - International Conference on Instrumentation, control and Information technology

作者： Fujihara, Yutaka Hanamoto, Takayuki Dai, Fengzhi Department of Control Engineering Matsue College of Technology Shimane Japan Advanced Electronic and Information Systems Matsue College of Technology Shimane Japan

ISBN: (纸本)9784907764296

Presently, breakthrough industrial technology and scientific technology produce various instruments of downscale and weight saving. But the metal parts are widely used for magnetic motors. It is difficult to lighten the weight and to miniaturize the motor. Therefore, we need small, light actuators that can be built into motor. We focus attention on the polymer material artificial muscle that responds to electrical stimulation with a significant shape or size change. In this research, the artificial muscle was produced by using the conductive grease and the polymer material. We used several kinds of polymer material films in our experiments to compare the performance of them. The displacement when the voltage is applied to electrode was measured. At last the result and conclusion are given. © 2008 SICE.

关键词： Muscle

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Active security system for an industrial robot based on artificial vision and fuzzy logic principles

Active security system for an industrial robot based on arti...

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ICINCO 2008 - 5th International Conference on Informatics in control, Automation and Robotics

作者： Fevery, B. Wyns, B. Boullart, L. Llata García, J.R. Torre Ferrero, C. Department of Electrical Energy Systems and Automation Ghent University Ghent Belgium Control Engineering Group Electronic Technology and Automatic Systems Department University of Cantabria Santander Spain

ISBN: (纸本)9789898111319

An active security system assures that interacting robots don't collide or that a robot operating independently doesn't hit any obstacle that is encountered in the robots workspace. In this paper, an active security system for a FANUC industrial robot is introduced. The active security problem where one robot needs to avoid a moving obstacle in its workspace is considered. An obstacle detection and localization mechanism based on stereoscopic vision methods was successfully developed. To connect the vision system, an operator's pc and the robot environment a real-time communication is set up over Ethernet using socket messaging. We used fuzzy logic for intelligent trajectory planning. A multitask oriented robot application in the KAREL programming language of FANUC Robotics was implemented and tested.

关键词： Fuzzy logic

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Annual business and news:: Beginning the 31st year of the Journal of Guidance, control, and Dynamics

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JOURNAL OF GUIDANCE control AND DYNAMICS 2008年第1期31卷 1-1页

作者： Schmidt, George T. Aeronautics and Astronautics Massachusetts Institute of Technology (MIT) AIAA Institute of Electrical and Electronics Engineers Russian Federation Academy of Navigation and Motion Control Department of Mechanical and Aerospace Engineering and Engineering Mechanics University of Missouri-Rolla(UMR) Lockheed Electronics Company Center for Space Research University of Texas Austin United States Wright Laboratory Eglin Air Force Base UMR AIAA Guidance Navigation and Control Technical Committee American Automatic Control Council Lockheed Martin Aeronautics Company Palmdale CA United States C4ISR and Unmanned Air Vehicle (UAV) Programs for Air Vehicle Sciences and Systems Accreditation Board Engineering and Technology Inc./Aeronautical National Technical Committee on Guidance Navigation and Control Department of Mechanical and Aerospace Engineering University at Buffalo State University of New York (SUNY) AIAA Technical Committee on GN and C Air Vehicles Directorate Air Force Research Laboratory (AFRL) Wright-Patterson Air Force Base Space Access and Hypersonic Vehicle Guidance and Control Group Control Science Center of Excellence AFRL AIAA Technical Committee on Guidance Navigation and Control Department of Mechanical and Aeronautical Engineering University of California (UC) Davis United States Boeing Company Modernized Flight Control System for the Apache Longbow AIAA Institute of Electrical and Electronics Engineers AHS Jet Propulsion Laboratory California Institute of Technology Boeing Company Flight Sciences and Advanced Design Group Guidance Navigation and Control (GN and C) Systems Engineer Distributed Space Systems NASA Goddard Space Flight Center (GSFC) AIAA GN and C Technical Committee Department of Aerospace Engineering and Engineering Mechanics University of Texas Austin United States Institute of Navigation American Astronautical Society AIAA Guidance Navigation (GN and C) and Control Technical Committee Department of Aerospace Engineering Iowa State University Iowa

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The voice to graphic phoneme learning system

The voice to graphic phoneme learning system

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2008 International Conference on Frontiers in Education: Computer Science and Computer engineering, FECS 2008

作者： Lay, Yun-Long Chen, Minder Lin, Chern-Sheng Yang, Hui-Jen Department of Electronic National Chin-Yi University of Technology Taiwan Information Systems and Operations Management School of Management George Mason University United States Department of Automatic Control Engineering Feng Chia University Taiwan Department of Information Management National Chin-Yi University of Technology Taiwan

ISBN: (纸本)1601320671

Speech learning is an important foundation for literacy ability. In general, language training needs a professional instrument to analyze speech for supporting the pronunciation of hearing impaired. However, non-professional speech spectrum equipment is very expensive and its output is not easy for hearing impaired to understand and learn. The purpose of this research is to implement a voice to graphic phoneme system (VGPS) to support the speech learning for hearing-impaired people at low cost and better performance.

关键词： Audition

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Portable Chinese phonetic learning system for hearing-impaired

Portable Chinese phonetic learning system for hearing-impair...

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2008 International Conference on Embedded systems and Applications, ESA 2008

作者： Lay, Yun-Long Chen, Minder Lin, Chern-Sheng Yang, Hui-Jen Department of Electronic National Chin-Yi University of Technology Taiwan Department of Information Systems and Operations Management School of Management George Mason University United States Department of Automatic Control Engineering Feng Chia University Taiwan Department of Information Management National Chin-Yi University of Technology Taiwan

ISBN: (纸本)1601320655

Generally speaking, hearing-impaired students only accept limited language training classes in the school. They do not have complementary learning tools to practice their pronunciation correctly. Therefore, the main purpose of this study uses an embedded system to implement a portable pronunciation learning tool for hearing-impaired people to learn Chinese phoneme. This system is implementing at low cost with an easy operation, a low memory and a better speech synthesis. Hearing-impaired people can use this tool to learn Chinese phonetic without time and space constraints. As experiment to test system has processed to verify the system performance.

关键词： Speech synthesis

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Spectral reflectance reconstruction based on neural network and basis vectors

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Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of technology 2008年第SUPPL.期28卷 81-84页

作者： Yang, Ping Liao, Ning-Fang Song, Hong Department of Optical Electronic Engineering School of Information Science and Technology Beijing Institute of Technology Beijing 100081 China Delft Center for Systems and Control Delft University of Technology 2628 CD Delft Netherlands

A new technique for spectral reflectance reconstruction based on neural network and basis vectors is proposed. The spectral reflectance of the sample surface is measured by spectrometer and the response of an RGBY digital camera is recorded. The reflectance is represented as a linear combination of several basis vectors by singular value decomposition (SVD). A neural network is trained such that it is able to approximate the relationship between the camera responses and coefficients accurately. The spectral reflectance can be reconstructed based on the neural network and basis vectors. Experimental results showed that this approach can reconstruct the reflectance of the standard samples with a relatively high accuracy. It is a parallel system with multichannel and is easy to realize with digital image capturing devices.

关键词： Neural networks

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Automatic Sleep Stage Determination by Multi-Valued Decision Making Based on Conditional Probability with Optimal Parameters

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SICE Journal of control, Measurement, and System Integration 2008年第6期1卷 423-428页

作者： Bei Wang Takenao Sugi Xingyu Wang Masatoshi Nakamura Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga UniversityDepartment of Automation School of Information Science and Engineering East China University of Science and Technology Department of Electrical and Electronic Engineering Faculty of Science and Engineering Saga University Department of Automation School of Information Science and Engineering East China University of Science and Technology Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga University

Data for human sleep study may be affected by internal and external influences. The recorded sleep data contains complex and stochastic factors, which increase the difficulties for the computerized sleep stage determination techniques to be applied for clinical practice. The aim of this study is to develop an automatic sleep stage determination system which is optimized for variable sleep data. The main methodology includes two modules: expert knowledge database construction and automatic sleep stage determination. Visual inspection by a qualified clinician is utilized to obtain the probability density function of parameters during the learning process of expert knowledge database construction. Parameter selection is introduced in order to make the algorithm flexible. Automatic sleep stage determination is manipulated based on conditional probability. The result showed close agreement comparing with the visual inspection by clinician. The developed system can meet the customized requirements in hospitals and institutions.

关键词： automatic sleep stage determination visual inspection multi-valued decision making parameter selection conditional probability

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