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SICE Annual Conference

作者： Akiko Takahashi Ryuichi Oguro Department of Computer Science and System Engineering Kyushu Institute of Technology Fukuoka Japan

This paper presents a method for estimating the torque and speed of line-start induction motor (IM). IM is being used for various purposes because that is a high trust machine for the load mechanism and can be used easily. So, IM is non-breakable. However, load mechanism sometime break. We try to check the condition of load mechanism by estimate the torque and speed of IM. We take up the motor-operated valve for load mechanism. Motor-operated valve is driven by line-start IM. Movement environment of IM is characterized by high temperature and humidity and therefore, it is difficult to position sensors near motor. In such a case, we must troubleshoot the system without using torque or speed sensors. The proposal method can estimate the torque and speed of IM by using the current and voltage near the switchboard. We use the inner and outer products between currents and voltages. Furthermore, we propose the parameter identification method of mutual inductance, leaked inductance and rotor resistance. The proposed method is validated by experimental results.

关键词： Torque Parameter estimation Valves Temperature sensors Sensor phenomena and characterization Voltage Inductance Induction motors Humidity Sensor systems

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New features of Easy Java simulations for 3D modeling

New features of Easy Java simulations for 3D modeling

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作者： Jara, Carlos A. Esquembre, Francisco Candelas, Francisco A. Torres, Fernando Dormido, Sebastián Department of Physics System Engineering and Signal Theory University of Alicante Alicante Spain Department of Mathematics University of Murcia Murcia Spain Department of Computer Science and Automatic Control UNED University Madrid Spain

ISBN: (纸本)9783902661562

This paper presents a new interface framework which has been added to Easy Java Simualtions' environment in order to improve its graphical features for 3D modeling. These new 3D capabilities provide users a set of new view elements which can be used to develop models with a high degree of reality. In this way, Easy Java Simulations becomes a powerful tool to easily and quickly create 3D realistic simulations.

关键词： Virtual reality

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Evaluating algorithms for the system state distribution of multi-state k-out-of-n:F system

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作者： Akiba, T. Yamamoto, H. Yamaguchi, T. Shingyochi, K. Tsujimura, Y. Yamagata College of Industry and Technology Information Management Engineering Yamagata Japan Faculty of System Design Tokyo Metropolitan University Tokyo Japan Faculty of Social Science and Computer Science Jumonji University Saitama Japan Department of Computer and Information Engineering Nippon Institute of Technology Saitama Japan

ISBN: (纸本)9780415485135

In traditional reliability theory, both the system and its components are allowed to take only two possible states: working or failed. On the other hand, in a multi-state system, both the system and the components are allowed to be in M + 1 states, i.e., 0 , 1 , 2 ,....M. A multi-state system reliability model provides more flexibility for the modeling of equipment conditions. In this study, we provide new recursive algorithm for evaluating the system state distribution of a generalized multi-state k-out-of-n:F system as applied to ideas of previous studies. This recursive algorithm is useful for any multi-state k-out-of-n:F system, including the decreasing, increasing and other non-monotonic multi-state k-out-of-n:F systems. We calculate and compare the order of computing time and memory capacity of our proposing algorithm with previous studies. © 2009 Taylor amp;Francis Group.

关键词： Reliability theory

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Iris Biometric Cryptography for Identity Document

Iris Biometric Cryptography for Identity Document

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International Conference of Soft Computing and Pattern Recognition (SOCPAR)

作者： Sim Hiew Moi Nazeema Binti Abdul Rahim Puteh Saad Pang Li Sim Zalmiyah Zakaria Subariah Ibrahim Department of Software Engineering Faculty of Computer Science and Information System Universiti Teknologi Malaysia Johor Malaysia Department of System & Communication Faculty of Computer Science and Information System Universiti Teknologi Malaysia Johor Malaysia

Currently, it is noticed that users tend to choose shorter password as their authentication which can be easily attacked. Biometric technologies such as fingerprint scanning, voice authentication, face recognition, signature, hand geometry and iris recognition is now playing an important role especially in application related to security issue. In this work, we present an approach to generate a unique and more secure cryptographic key from iris template. The iris images are processed to produce iris template or code to be utilized for the encryption and decryption tasks. AES cryptography algorithm are employed to encrypt and decrypt the identity data. Distance metric such as hamming distance and Euclidean distance are used for the template matching identification process. Experimental results show that this system can obtain a higher security with a low false rejection or false acceptance rate.

关键词： Biometrics Cryptography Authentication Fingerprint recognition Face recognition Geometry Iris recognition Security Identity-based encryption Hamming distance

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H∞ filtering convergence and it's application to SLAM

H∞ filtering convergence and it's application to SLAM

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ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009

作者： Ahmad, Hamzah Namerikawa, Toru Division of Electrical Engineering and Computer Science Kanazawa University Kakuma Machi Kanazawa Ishikawa 920-1167 Japan Department of System Design Engineering Keio University 3-14-1 Hiyoshi Kohoku-ku Yokohama 223-8522 Japan

ISBN: (纸本)9784907764296

KF-SLAM(Kalman filter-SLAM) have been used as a popular solution by researchers in many SLAM application. Nevertheless, it shortcomings of assumption for Gaussian noise limited its efficiency and demand researcher to consider better filter and algorithm to achieve a promising result of estimation. In this paper, we proposed one of its family, the H ∞ filter-based SLAM to determine its competency for SLAM problem. Unlike Kalman filter, H∞ filter able to work in an unknown statistical noise behavior and thus more robust. It rely on a guess that the noise is in bounded energy and does not require a priori knowledge about the system. Therefore, we proposed the H∞ filter as other available technique to infer the location for both robot and landmarks while simultaneously building the map. From the results of simulation, H ∞ filter produces better outcome than the Kalman filter especially in the linear case estimation. As a result, H∞ filter may provides another available estimation methods with the capability to ensure and improve estimation for the robotic mapping problem especially in SLAM. © 2009 SICE.

关键词： Kalman filters

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Motion planning in unknown environment using an interval fuzzy type-2 and neural network classifier

Motion planning in unknown environment using an interval fuz...

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IEEE International Conference on Computational Intelligence for Measurement systems and Applications (CIMSA)

作者： Siti Nurmaini Siti Zaiton Mohd Hashim Department of Computer Engineering Faculty of Computer Science University of Sriwijaya Indonesia Department of Software Engineering Faculty of Computer Science and Information System Universiti Teknologi Malaysia Johor Bahru Malaysia

This paper describes environmental recognition and motion control using weightless neural network classifier and interval type-2 fuzzy logic controller. The weightless neural network classifies geometric feature such as U-shape, corridor and left or right corner using ultrasonic sensors. The neural network utilizes previous sensor data and analyzes the situation of the current environment. The behavior of mobile robot is implemented by means of fuzzy control rules. Based on the performance criteria the quality of controller is evaluated to make navigation decisions. This functionality is demonstrated on a mobile robot using modular platform and containing several microcontrollers implies the implementation of a robust architecture. The proposed architecture implemented using low cost range sensor and low cost microprocessor. The experiment results show that the mobile robot can recognize the current environment and was able to successfully avoid obstacle in real time.

关键词： Fuzzy neural networks Neural networks Mobile robots Motion control Costs Fuzzy logic Data analysis Fuzzy control Navigation Microcontrollers

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Cognitive safety control for human-machine interaction 10

Cognitive safety control for human-machine interaction

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2009 10th European Control Conference, ECC 2009

作者： Ding, Hao Kain, Sebastian Schiller, Frank Stursberg, Olaf Institute of Control and System Theory Department of Electrical Engineering and Computer Science University of Kassel Kassel34109 Germany Institute of Information Technology in Mechanical Engineering Technische Universität München Garching bei München85748 Germany

ISBN: (纸本)9783952417393

In order to introduce cognition, i.e. perception and autonomously reconfigured control, into manufacturing systems for increasing the flexibility and adaptivity this paper proposes an architecture of a cognitive safety controller (CSC). The CSC consists of a strategic controller (SC) and an operational controller (OC): the SC iteratively computes (sub-)optimal control strategies taking dynamic models, safety specifications, and learned knowledge into account. The operational controller (OC) provides certified safety by safe realization of the strategy computed by the SC. The paper illustrates the application of the CSC to a cognitive manufacturing system (CMS) in which a robot and a human operator share a workspace. Important components of this application are a procedure to compute (sub)optimal strategies for varying control specifications online and a scheme for implementing the strategy on a programmable logic controller (PLC). © 2009 EUCA.

关键词： Controllers

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Context assessment strategies for Ubiquitous Robots

Context assessment strategies for Ubiquitous Robots

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Fulvio Mastrogiovanni Antonio Sgorbissa Renato Zaccaria The Department of Communication Computer and System Science Faculty of Engineering University of Genova Genoa Italy

This paper presents an architecture for context-aware Ubiquitous Robotics applications, where mobile robots cooperate with intelligent environments to fulfill their tasks. Specifically, the work is focused on distributed knowledge representation issues and context assessment strategies, and introduces a technique for on-line context recognition in highly dynamic environments. Experimental validation, performed in a civillian hospital building, is described and discussed.

关键词： Intelligent robots Mobile robots Context awareness Robot sensing systems Intelligent sensors Intelligent actuators Cognitive robotics Robotics and automation Knowledge representation Context modeling

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New expansions of numerical eigenvalues by Wilson's element

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Journal of Computational and Applied Mathematics 2009年第1期225卷 213-226页

作者： Lin, Qun Huang, Hung-Tsai Li, Zi-Cai Institute of Computational Mathematics and Scientific/Engineering Computing Academy of Mathematics and System Sciences Chinese Academy of Sciences P.O. Box 2719 Beijing 1000080 China Department of Applied Mathematics I-Shou University 840 Taiwan Department of Applied Mathematics National Sun Yat-sen University Kaohsiung 80424 Taiwan Department of Computer Science and Engineering National Sun Yat-sen University Kaohsiung 80424 Taiwan

The paper explores new expansions of eigenvalues for - Δ u = λ ρ u in S with Dirichlet boundary conditions by Wilson's element. The expansions indicate that Wilson's element provides lower bounds of the eigenvalues. By the extrapolation or the splitting extrapolation, the O (h4) convergence rate can be obtained, where h is the maximal boundary length of uniform rectangles. Numerical experiments are carried to verify the theoretical analysis made. It is worth pointing out that these results are new, compared with the recent book, Lin and Lin [Q. Lin, J. Lin, Finite Element Methods;Accuracy and Improvement, science Press, Beijing, 2006]. © 2009.

关键词： Extrapolation

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A preliminary approach to ECTS estimate within the framework of Electrical and Electronic engineering based on experience

A preliminary approach to ECTS estimate within the framework...

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Frontiers in Education (FIE) Conference

作者： Raquel Lacuesta Guillermo Palacios Department of Computer Science and System Engineering University of Zaragoza Spain Department of Electronic Engineering and Communications University of Zaragoza Spain

The present paper discusses results of the global study carried out during the past two years to estimate the student workload (an ECTS preliminary estimate) for the first course of the degree in Electrical and Electronic engineering. At the same time, the different methodologies advocated by the European Space for Higher Education have been put into practice in order to promote the acquisition of both specific and generic competences and skills belonging to the degree. The process of adaptation to the new European Space for Higher Education brings with itself a new understanding of both teaching and learning procedures. The gradual adaptation of the subjects will allow lecturers to act carefully and thoughtfully when facing the necessary adaptation to the new educational framework; results obtained will let us correct the tested methodological strategies and work on their improvement.

关键词： Electrical capacitance tomography Education Problem-solving Testing Design engineering Decision making Teamwork Aerospace industry Educational technology Technological innovation

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