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International Conference on Electrical engineering, Computing Science and Automatic control (CCE)

作者： J. Sandoval J. Salt Department of Electrical and Electronic Engineering Mérida Institute of Technology Yucatan Mexico Department of Systems Engineering and Control Valencia Polytechnic University Valencia Spain

This work presents two applications of a novel tool developed for the approximate calculation of behavior in the domain of the frequency of Multirate Sampled-Data control systems. The cases presented here focus on the designing of digital regulators that operate with more than one sampling frequency, the aim being to stabilize the system in closed loop using relatively low sampling frequencies of the plant output.

关键词： Frequency domain analysis control systems Sampling methods Switches Time measurement Regulators Design engineering Mathematical model Chemical analysis Image sampling

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The development of computer-aided magnifer system with digital zooming for eye-impaired

The development of computer-aided magnifer system with digit...

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

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

ISBN: (纸本)1601320671

Amblyopia students lack of visual-sight ability to read a book, so they need the magnifier to help them read the words. Without the normal eyesight ability for amblyopia students, they need a convenient and low-cost tool to help them read easily. Not only for the amblyopia students, the elder with the growth of age also need a tool to help them read conveniently. With the decreasing of the computer cost and the prevalence of computer technology, every household has computer at home. How to use a computer-aided system as supportive tool to read the book becomes an economic way for amblyopia people. Therefore, the main purpose of this research is to implement a computer-aided magnifer system with digital zooming technique for eye-impaired. The system can extract the images or words through software module to enlarge the images or words on the screen to help eye-impaired read.

关键词： Students

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On the Trade-off between Energy Consumption and Food Quality Loss in Supermarket Refrigeration systems

On the Trade-off between Energy Consumption and Food Quality...

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2008 American control Conference (ACC), vol.7

作者： J. Cai J. B. Jensen S. Skogestad J. Stoustrup Automation and Control Department of Electronic Systems University of Aalborg Aalborg Denmark Department of Chemical Engineering Norwegian University of Science and Technology Trondheim Norway

This paper studies the trade-off between energy consumption and food quality loss, at varying ambient conditions, in supermarket refrigeration systems. Compared with the traditional operation with pressure control, a large potential for energy savings without extra loss of food quality is demonstrated. We also show that by utilizing the relatively slow dynamics of the food temperature, compared with the air temperature, we are able to further lower both the energy consumption and the peak value of power requirement. The Pareto optimal curve is found by off-line optimization.

关键词： Energy consumption Refrigeration Displays Temperature Valves control systems Pressure control Potential energy Pareto optimization Costs

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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

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

ISBN: (纸本)9784907764302

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.

关键词： EAP Artificial muscle Acrylic form elastomer Urethane gel polymeric materials Extensible Authentication Protocol basic research metal parts Motor focused attention muscles

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Corrigendum to “A neural networks based model for rate-dependent hysteresis for piezoceramic actuators” [Sens. Actuators A 143 (2008) 370–376]

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Sensors and Actuators A: Physical 2008年第1期148卷 350-351页

作者： Ruili Dong Yonghong Tan Hui Chen Yangqiu Xie A0503221 Department of Automation Shanghai Jiaotong University Shanghai 200040 China School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 610054 China Laboratory of Intelligent Systems and Control Engineering Guilin University of Electronic Technology Guilin 541004 China Department of Electronic Engineering Xidian University Xi’an 710071 China

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Simple efficient techniques for creating effective 3D impressions from 2D original images

Simple efficient techniques for creating effective 3D impres...

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Signal Processing Algorithms, Architectures, Arrangements and Applications (SPA)

作者： Julian Balcerek Adam Dąbrowski Adam Konieczka Department of Computing Science and Management Chair of Control and System Engineering Division of Signal Processing and Electronic Systems Poznan University of Technology Poznan Poland

In this paper simple techniques based on nonlinear geometric transformations are presented for creating an effective 3D impression (stereovision or illusion of depth) from a single 2D original. Our aim is to propose semi-automatic ways to transform 2D images into their suggestive but plausible 3D anaglyph versions. Three conversion methods based on a binary depth map are proposed and the influence of various RGB component shifts on the 3D impression quality is studied.

关键词： Image color analysis Three dimensional displays Materials Cameras Image segmentation Convergence

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Real-time control strategy for EMG-drive meal assistance robot — my spoon

Real-time control strategy for EMG-drive meal assistance rob...

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International Conference on control, Automation and systems ( ICCAS)

作者： Xiu Zhang Xingyu Wang Bei Wang Takenao Sugi Masatoshi Nakamura Department of Automation East China University of Science and Technology Shanghai China Department of Electrical and Electronic Engineering Saga University Saga Japan Department of Advanced Systems Control Engineering Saga University Saga Japan

The paper presents an ongoing investigation of applying finite state machines (FSM) to drive a meal assistance robot based on electromyogram (EMG) signals. An adapting single-threshold method on EMG power is proposed to recognize different elevation gestures. Predefined control commands are output by FSM based on the extracted EMG features, and used to operate the robot. The performance of control mode is tested in efficiency and comfortableness by both subjective and objective indices. And the high performance of the EMG-control meal assistance robot makes it feasible for users with upper limbs motor disabilities.

关键词： Robots Electromyography Muscles control systems Robotics and automation Automata Circuits Sampling methods Automatic control Feature extraction

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Skill Assist Neuro-Fuzzy control of Omni-directional Wheelchair for Attendants Considering Rotation Center of Vehicle

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IFAC Proceedings Volumes 2008年第2期41卷 15106-15113页

作者： Kazuhiko Terashima Kaoru Watanabe Yasumasa Kondo Takanori Miyoshi Juan Urbano Sou Kitamura Hideo Kitagawa Depariment of Production Systems Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi 441-8580 Japan terasima Department of Electronic Control Engineering Gifu National College of Technology 2236-2 Kamimakuwa Motosu-city Gifu 501-0495 Japan

For improving the operability of an omni-directional wheelchair provided with a power assist system, the system must be able to adapt to the individual characteristics of the many different attendants that will use it. For achieving this purpose, an innovative human-interface using a touch panel that provides easy input and feedback information in real time of the operation of a power-assisted wheelchair was developed. The system was tested experimentally with many different attendants and the results show that in addition to providing a human friendly interface by using the touch panel system with a monitor, the system can successfully adapt to the particular habits of the attendants. Furthermore, control of the rotation center of the OMW is proposed by making use of the OMW's potential advantage and coordination transformation.

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Robust H ∞ controller Design for Aircraft Lateral Dynamics using Multi-objective Optimization and Genetic Algorithms

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IFAC Proceedings Volumes 2008年第2期41卷 8834-8839页

作者： M Giacomán-Zarzar R Ramirez-Mendoza PJ Fleming I Griffin A Molina-Cristóbal Center for Innovation in Design and Technology Tecnológico de Monterrey Monterrey Nuevo León México (Tel: 8358-2000 Department of Automatic Control and Systems Engineering The University of Sheffield Sheffield England Electrical Machines & Drives Group Department of Electronic and Electrical Engineering The University of Sheffield Sheffield England

Two techniques are combined during the design of an optimal controller: Linear Matrix Inequalities (LMIs) and Multi-objective Genetic Algorithms (MOGAs). In this paper the LMI optimization technique is used to obtain a single controller while MOGA is used to convert the controller design into a multi-objective optimization procedure. The combination of these techniques is proposed in this document and is shown to be advantageous against independent application of the aforementioned techniques. It is also presented how the sensitivity and complementary sensitivity functions are shaped with the weighting functions, while restricting the magnitude of the control signals by adding them as a hard objective in the MOGA approach.

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Conditional probability of Cauchy distribution in automatic sleep stage determination for sleep data with artifacts

Conditional probability of Cauchy distribution in automatic ...

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International Conference on control, Automation and systems ( ICCAS)

作者： Bei Wang Takenao Sugi Fusae Kawana Xingyu Wang Masatoshi Nakamura Department of Automation East China University of Science and Technology Shanghai China Department of Advanced Systems Control Engineering Saga University Saga Japan Department of Electrical and Electronic Engineering Saga University Saga Japan Department of Clinical Physiology Toranomon Hospital Tokyo Japan

An automatic sleep stage determination system dealing with the sleep data contaminated by artifacts is developed, which is working on an expert knowledge-based multi-valued decision making method. The knowledge database is consisted of probability density functions of parameters for various sleep stages according to the visual inspection by a qualified clinician. The probability density functions are approximated by Cauchy distribution on histograms. Sleep stages are determined automatically according to the maximum value of conditional probability. Due to the infinite variance of Cauchy distribution, the effect of mis-determination caused by artifacts can be abated. The result of automatic sleep stage determination was satisfactory. The presented automatic sleep stage determination can be an assistant tool for clinical practice.

关键词： Sleep Hospitals Decision making Probability density function Inspection Electroencephalography Automation Physiology Visual databases Pollution measurement

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