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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Luiz Marcio Spinosa Leandro dos Santos Coelho Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Paraná Curitiba Parana Brazil

This paper introduces an approach to deal with IMS (Intelligent Manufacturing System) models, in order to help the development of Decision Support systems, Simulators and Performance Evaluators. The complexity of such systems is growing continuously requiring knowledge and information exchange between different manufacturing functions with more and more efficiency. This paper explores some potentialities of soft computing approaches and intelligent agent-oriented design including artificial neural networks, fuzzy systems, and evolutionary computation. The rationale is in order to support decision making processes performed by the autonomous and co-operative units of an IMS.

关键词： Computational modeling Manufacturing Object oriented modeling Artificial intelligence Artificial neural networks Evolutionary computation Fuzzy logic

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An empirical approach to the identification of sources of machining errors in ultra-precision raster milling

An empirical approach to the identification of sources of ma...

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作者： To, Suet Wang, Hao Li, Bing Cheung, Chi Fai Department of Industrial and Systems Engineering Hong Kong Polytechnic University Hong Kong Hong Kong Department of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen Graduate School China

Ultra-precision raster milling is one of the most significant techniques for the fabrication of high precision components with the surface roughness less than 10nm and form errors less than 0.2 um, without the need for any subsequent polishing. However, no matter how well a machine may be designed. there is a limit to the accuracy that can be achieved. This paper studies the machining errors caused by the diamond tool and the axis motions using Freeform 705G. With an empirical approach, the error sources are separated based on their effects on the surface finish. The main source leading to poor surface finish is identified. This establishes a basis for subsequent error compensation and equipment maintenance.

关键词： Milling (machining)

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Quantum Gaussian particle swarm optimization approach for PID controller design in AVR system

Quantum Gaussian particle swarm optimization approach for PI...

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IEEE International Conference on systems, Man and Cybernetics

作者： Leandro dos Santos Coelho Bruno Avila de Meirelles Herrera Industrial and Systems Engineering Graduate Program PPGEPS Pontifical Catholic University of Paraná Curitiba Parana Brazil

During the history of science of computational intelligence, many evolutionary algorithms approaches were proposed having more or less success in solving various optimization problems. In this context, the Particle Swarm Optimization (PSO) is a bio-inspired optimization mechanism based on the metaphor of social behaviour of birds flocking and fish schooling in search for food. Inspired by the classical PSO method and quantum mechanics theories, this work presents a quantum-behaved PSO (QPSO) approach using Gaussian probability distribution function (G-QPSO). Numerical simulations based on optimized proportional-integral-derivative (PID) control of an automatic regulator voltage system for nominal system parameters and step reference voltage input demonstrate the effectiveness and efficiency of G-QPSO approach. Simulation results of G-QPSO to determine the PID parameters are compared with the classical PSO and QPSO.

关键词： Particle swarm optimization Three-term control Control systems Quantum mechanics History Computational intelligence Evolutionary computation Birds Marine animals Educational institutions

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Developing a practical car search system using fuzzy theory

Developing a practical car search system using fuzzy theory

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3rd International Conference on Innovative Computing Information and Control, ICICIC'08

作者： Samatsu, Takashi Tachikawa, Kie Shi, Yan Department of Mechanical Systems Engineering School of Industrial Engineering Tokai University 9-1-1 Toroku Kumamoto-City Kumamoto 862-8652 Japan Information Engineering Course Graduate School of Industrial Engineering Tokai University 9-1-1 Toroku Kumamoto-City Kumamoto 862-8652 Japan Department of Electronics and Intelligent Systems Engineering School of Industrial Engineering Tokai University 9-1-1 Toroku Kumamoto-City Kumamoto 862-8652 Japan

ISBN: (纸本)9780769531618

This paper described developing a practical car search system using fuzzy theory. This system aims at supporting car purchasing for a person which is no good with machines as if they ask casually someone who knows more about cars. Unspecific conditions are expressed by the fuzzy set, and the level matching the conditions are expressed by the grade values. To keep more practical use, a GUI form which only selected some menus was developed. In conclusion, it reviews and observes this study, showing its effectiveness, remaining issues, and measures for the issues. © 2008 IEEE.

关键词： Safety devices

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Developing a Practical Car Search System Using Fuzzy Theory

Developing a Practical Car Search System Using Fuzzy Theory

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International Conference on Innovative Computing, Information and Control (ICICIC)

作者： Takashi Samatsu Kie Tachikawa Yan Shi Department of Mechanical systems Engineering School of Industrial Engineering Tokai University Kumamoto Japan Information Engineering Course Graduate School of Industrial Engineering Tokai University Kumamoto Japan Department of Electronics and Intelligent Systems Engineering School of Industrial Engineering Tokai University Kumamoto Japan

关键词： Engines Fuzzy sets Vehicles Biological system modeling Histograms Graphical user interfaces Chapters

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Recommending mobile content using content diffusion and user preference transition

Recommending mobile content using content diffusion and user...

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2008 International Conference on e-Learning, e-Business, Enterprise Information systems, and e-Government, EEE 2008

作者： Lee, Tong Queue Lee, Eunchang Park, Young Park, Yongtae Department of Mobile Internet Dongyang Technical College Seoul Korea Republic of Graduate Program in Technology and Management Seoul National University Seoul Korea Republic of Department of Computer Science and Information Systems Bradley University Peoria IL United States Department of Industrial Engineering Seoul National University Seoul Korea Republic of

ISBN: (纸本)1601320639

Recommendation accuracy is especially important in mobile e-commerce environments due to the limited screen size of mobile devices and relatively expensive connection costs. Mobile content tends to be fashionable and are geared for young users. This paper presents a novel method of building a more accurate recommender system for mobile content in a mobile ecommerce environment. The method is based on collaborative filtering, and models content diffusion and user preference transition and incorporates them in constructing pseudo ratings from implicit feedback data. In a variety of experiments, recommender systems based on the method showed significantly better recommendation accuracy than a pure collaborative filtering-based recommender system.

关键词： Collaborative filtering

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Modeling of the Plasma Electrode Bias in the Negative Ion Sources with 1D PIC Method

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AIP Conference Proceedings 2009年第1期1097卷

作者： D. Matsushita S. Kuppel A. Hatayama A. Fukano M. Bacal Graduate School of Science and Technology Keio University 3‐14‐1 Hiyoshi Kouhoku‐ku Yokohama 223‐8522 Japan Mechanical Systems Engineering Cource Monozukuri Department Tokyo Metropolitan College of Industrial Technology Higashioi Shinagawa Tokyo 140‐0011 Japan Laboratoire de Physique et Technologie des Plasmas UMR 7648 du CNRS Ecole Polytechnique 91128 Palaiseau France

The effect of the plasma electrode bias voltage in the negative ion sources is modeled and investigated with one‐dimensional plasma simulation. A particle‐in‐cell (PIC) method is applied to simulate the motion of charged particles in their self‐consistent electric field. In the simulation, the electron current density is fixed to produce the bias voltage. The tendency of current‐voltage characteristics obtained in the simulation show agreement with the one obtained from a simple probe theory. In addition, the H− ion density peak appears at the bias voltage close to the plasma potential as observed in the experiment. The physical mechanism of this peak H− ion density is discussed.

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State Space Modeling of Ionic Polymer-Metal Composite Actuators based on Electrostress Diffusion Coupling Theory

State Space Modeling of Ionic Polymer-Metal Composite Actuat...

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2008 IEEE/RSJ International Conference on Intelligent Robots and systems (IROS 2008), vol.1

作者： Takaaki Osada Kentaro Takagi Yoshikazu Hayakawa Zhi-Wei Luo Kinji Asaka Department of Mechanical Science and Engineering Graduate School of Engineering University of Nagoya Nagoya Japan Department of Mechanical Science and Engineering BMC RIKEN University of Nagoya Japan Department of Computer Sciencs and Systems Engineering BMC RIKEN Kobe University Japan BMC RIKEN National Institute for Advanced Industrial Science and Technology Japan

Ionic polymer-metal composite (IPMC) actuators are expected as artificial muscles for bio-mimetic soft robots. The IPMC gel first bends quickly and then bends back slowly when a constant voltage is applied to the sample. The latter phenomenon, referred to as the stress relaxation, can be modeled by electrostress diffusion coupling theory. The theory can predict the behavior of the actuator for the different species of counterions. In order to describe the actuator dynamics as a system with inputs and outputs, this paper proposes a linear state space model based on the electrostress diffusion coupling theory. The model consists of the three systems, the electrical, the electro-mechanical, and the mechanical systems. The results of the simulation and the experiment demonstrate the validity of the model.

关键词： Polymers Mathematical model Stress Actuators Equations Biomembranes Biological system modeling

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On the novel fast ocean platform

On the novel fast ocean platform

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27th International Conference on Offshore Mechanics and Arctic engineering, OMAE 2008

作者： Yoshida, Motoki Iwashita, Hidetsugu Kihara, Hajime Itakura, Hiroshi Bao, Weiguang Kinoshita, Takeshi Graduate School of Economics Kyushu University 6-19-1 Hakozaki Higashi-ku Fukuoka 852-8581 Japan Dept. of Mechanical Systems Engineering National Defense Academy 1-10-20 Hashirimizu Yokosuka 239-8686 Japan Institute of Industrial Science University of Tokyo 4-6-1 Komaba Meguro-ku Tokyo 153-8505 Japan

ISBN: (纸本)9780791848234

The mission of the large trans-ocean fast ship is to transport the high-valued and time-sensitive goods punctually at reasonable price. Accordingly, the speed reduction, additional resistance or slamming, which are caused by the large amplitude of ship motions, should be restricted completely. Some seaworthiness, such as no speed reduction and absolutely no slamming, is especially required for ships running fast in ocean waves. The final intention of the study is to compare the transport efficiency, including accuracy of time schedule and transport quality like damage of goods caused by slamming, among three types of ship hulls, i.e. mono-hull, catamaran and trimaran. As a first step, a "Resonance-Motion-Free SWATH (RMFS)" hull is considered as an example of catamaran type in the present work. As a result of very small water plane, the restoring moments are near zero for this type of hull, which leads to free of resonance in the pitch responses. Experiments in towing tank and calculations based on potential theory are carried out to examine hydrodynamic forces and motion responses in waves. The results are compared with those of typical mono-hull and trimaran ships. The predominance of RMFS regarding seaworthiness will be pointed out in the conclusion. Copyright © 2008 by ASME.

关键词： Arctic engineering

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A general adaptive robust nonlinear motion controller combined with disturbance observer

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IFAC Proceedings Volumes 2008年第2期41卷 14792-14797页

作者： Zi-Jiang Yang Seiichiro Hara Shunshoku Kanae Kiyoshi Wada Chun-Yi Su Department of Electrical and Electronic Systems Engineering Graduate School of Information Science and Electrical Engineering Kyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan Department of Mechanical and Industrial Engineering Concordia University 1455 de Maisonneuve Blvd. W. Montreal Quebec H3G 1M8 Canada

A general adaptive robust nonlinear motion controller combined with disturbance observer (DOB) for positioning control of a nonlinear single-input-single-output (SISO) mechanical system is proposed. Theoretical performance such as transient performance, ultimate tracking error bound and mean square tracking error bound are analyzed rigorously, and simulation results are provided to support the theoretical results.

关键词： Disturbance observer Input-to-state stability Robust control Adaptive control

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