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Asia-Pacific Magnetic Recording Conference, APMRC 2000

作者： Miwa, M. Harita, K. Kaneko, R. Ishzaki, H. Department of Opto-Mechatronics Faculty of System Engineering Wakayama University 930 Sakaedani Wakayama640-8510 Japan Ferrotec Corporation 1-4 Midoridaira YokaichibaChiba289-2131 Japan

ISBN: (纸本)0780362543

In this study, we measured damping characteristics and frequency characteristics of magnetic fluid bearing spindles using a high-frequency vibration base by a piezo actuator. Using the high-frequency vibration base, high frequency excitation was added to magnetic fluid bearing spindles mounted on the vibration base, and we proved that magnetic fluid bearing spindles have effective damping. Also the damping effect became larger with higher spindle rotational speed. © 2000 IEEE.

关键词： Magnetic fluids

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Initial state compensation of repetitive controller

Initial state compensation of repetitive controller

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Proceedings of the 3th World Congress on Intelligent Control and Automation

作者： Xu, Guangjie Bian, Runqiang Li, Yusen Wang, Zhimin She, Jin-Hua Nakano, Michio Department Automation Tianjin Institute of Technology Tianjin 3000191 China Mechatronics Department Tokyo Engineering University 1404-1 Katajura Hachioji Tokyo 192 Japan Dept. of Control System Engineering Tokyo Institute of Technology 2-12-1 Oh-Okayama Meguro-Ku Tokyo 152 Japan

A design approach of the initial state of the repetitive controller is proposed in this paper. The approach makes full use of the feature of the digital controller and optimizes the transient response without perplexi... 详细信息

关键词： Digital control systems

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Expert control and fault diagnosis of the leaching process in zinc hydrometallurgy plant *

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IFAC Proceedings Volumes 2000年第22期33卷 335-340页

作者： Min Wu Jin-Hua She Michio Nakano Weihua Gui Department of Automatic Control Engineering Central South University of Technology Changsha 410083 China Mechatronics Department Tokyo University of Engineering Tokyo 192-0982 Japan Department of Mechanical System Engineering Takushoku University Tokyo 193-8585 Japan

This paper concerns a real-world application of an expert system to the automation of a zinc hydrometallurgy plant. The leaching process in zinc hydrometallurgy involves dissolving zinc-bearing material in dilute sulfuric acid to form a zinc sulfate solution. The key problems are to determine and track the optimal pHs of the overflows from the neutral and acid leaches, and to ensure the safe running of the process. This paper describes an expert control and fault diagnosis scheme that solves those problems. The expert control is based on a combination of steady-state mathematical models and rule models, and the fault diagnosis employs rule models with certainty factors and a Bayes representation. A real-world application of this scheme showed that it not only improved the control performance, but also correctly diagnosed faults.

关键词： zinc hydrometallurgy leaching process expert control fault diagnosis mathematical models rule models

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Frequency characteristics of stiffness and damping effect of magnetic fluid bearing

Frequency characteristics of stiffness and damping effect of...

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Asia-Pacific Magnetic Recording Conference (APMRC)

作者： M. Miwa K. Harita R. Kaneko H. Ishzaki Wakayama Daigaku Wakayama JP Department of Opto-Mechatronics Faculty of System Engineering Wakayama University Wakayama Japan Ferrotec Corporation Yokaichiba Chiba Japan

关键词： Damping Magnetic liquids Vibration measurement Ball bearings Optical recording Frequency measurement Disk recording Magnetic recording Disk drives Magnetic heads

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Initial state compensation of repetitive controller

Initial state compensation of repetitive controller

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World Congress on Intelligent Control and Automation (WCICA)

作者： Xu Guangjie Bian Runqiang Li Yusen Wang Zhimin She Jin-Hua M. Nakano Department Automation Tianjin Institute of Technology Tianjin China Mechatronics Department Tokyo Engineering University Hachioji Tokyo Japan Department of Control System Engineering Tokyo Institute of Technology Meguro Tokyo Japan

关键词： Control systems Digital control Transient response Automatic control Delay effects Performance analysis State-space methods Design automation Electronic mail Computer industry

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Blending multi-behaviors of intelligent reactive navigation for legged walking robot in unstructured environment

Blending multi-behaviors of intelligent reactive navigation ...

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IEEE Region 10 International Conference TENCON

作者： A.A.S. Al-Jumaily S.H.M. Amin Intelligent system Engineering Group Department of Mechatronics Engineering International Islamic University Malaysia Kuala Lumpur Malaysia Center for Artificial Intelligence and Robotics Faculty of Electrical Fbgmeering Universiti Teknologi Malaysia Skudai Johor Malaysia

The reaction of autonomous mobile robot to the dynamic, uncertain, and changeable environment is one of most difficult issue in control of the intelligent autonomous robot movement. Fuzzy control appears as a very useful tool for handling the intelligent reactive navigation. Present work deals with building of fuzzy behaviors based reactive navigation to reach the goal, propose new method to blend and coordinate multiple behaviors in the same time. This method using fuzzy technique and fix priority value reflects the importance of the behavior. Our behaviors system is test by building our simulation and animation programs that reflect online the robot movement using graphical user interface (GUI).

关键词： Intelligent robots Legged locomotion Navigation Mobile robots Robot kinematics Robot sensing systems Control systems Uncertainty Intelligent sensors Intelligent systems

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Improvement of operation for tele-manipulation system using virtual reality: realization of common movement direction and common force direction in master and slave at arbitrary viewpoint

Improvement of operation for tele-manipulation system using ...

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Annual Conference of Industrial Electronics Society

作者： H. Tsuge T. Fukuda F. Arai A. Inaba Y. Niwa Mechatronics Division Research Institute of Manufacturing Information Technology Gifu Japan Center of Cooperative Research in Advanced Sci University of Nagoya Nagoya Japan Department Micro System Engineering Nogoya University Nagoya Japan Information system Division Research Institute of Manufacturing Information Technology Gifu Japan

Tele-manipulation systems are used in many fields where one can't operate directly. Recently, virtual reality has been focused as a method for the improvement of manipulability in tele-manipulation systems. In previous research, simulations in virtual space overcame the problems caused by communication time delay, and a virtual guide was proposed in order to assist operations. However, the relationship between the viewpoint and the coordinates of the operation has not been discussed much, although virtual reality enables us to select an arbitrary viewpoint. In our research, we have proposed a new model in which the coordinates of the operation are defined by the viewpoint in order to improve the manipulability of tele-manipulation, and we have performed a fundamental experiment in order to evaluate the manipulability of our proposed model.

关键词： Virtual reality Master-slave Orbital robotics mechatronics Delay effects Robot sensing systems Information systems Manufacturing industries Employee welfare Biotechnology

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Inverse factory for end-of-life-cars. Complete dismantling system

Inverse factory for end-of-life-cars. Complete dismantling s...

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International Symposium on Environmentally Conscious Design and Inverse Manufacturing (EcoDesign)

作者： H. Yamamoto S. Shibata H.C. Neijenhuis Mechatronics Technology Section Toyo Engineering Corporation Chiba Japan VMI EPE HOLLAND BV ECO-SYSTEM Epe Netherlands

This paper presents a new concept of a recycling system that is a complete dismantling of end-of-life-cars that goes along with a human-oriented working environment. The system offers the solution for the car shredder-dust problem. After dismantling in the system, the remaining car-frame and other metal parts can be processed directly via a re-materialisation, because of the little remainders, so a shredding process can be eliminated. The system is designed so that dismantling processes are allocated to a line systematically, just like (more or less) an inverse manner of the assembling process. Therefore, the dismantling can be performed efficiently, so that recycling trade becomes available in whole removed parts and material resources because of the certain amount of collection available.

关键词： Production facilities Automotive materials Plastics Iron mechatronics Humans Electronic switching systems Recycling Waste materials Inorganic materials

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Hybrid approach of genetic algorithms and learning automata for flexible transfer system

Hybrid approach of genetic algorithms and learning automata ...

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IEEE International Workshop on Intelligent Robots and systems (IROS)

作者： T. Fukuda K. Sekiyama I. Takagawa S. Shibata H. Yamamoto Center for Cooperative Research in Advanced Science and Technology Nagoya Japan Department of Management and System Science Suwa College Science University of Tokyo Chino Nagano Japan Department of Micro System Engineering Graduate School of Engineering University of Nagoya Nagoya Japan Mechatronics Technology Section Advanced Industrial Systems Technology Department Technology Research & Development Center Toyo Engineering Corporation Narashino Chiba Japan

The flexible transfer system (FTS) is a self-organizing manufacturing system composed of autonomous robotic modules, which transfer a palette carrying machining parts. The central issue is realization of both higher efficiency and flexibility to cope with environmental change, such as a sudden change of machining plan or breakdowns of the modules. Through the self-organization of a multi-layered strategic vector field corresponding to a task, the FTS can generate a quasi-optimal transfer path with learning automata. Also, the optimal planning is attempted by use of genetic algorithms, and is based on the global information on the system. We propose a hybridization method between the distributed and centralized approaches. Simulation is conducted to evaluate the basic system performance and the results show the effectiveness.

关键词： Genetic algorithms Learning automata Machining Manufacturing systems Electric breakdown Production systems Intelligent manufacturing systems Transportation Switches Technology management

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Distributed control of flexible transfer system (FTS) using learning automata

Distributed control of flexible transfer system (FTS) using ...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： T. Fukuda K. Sekiyama Y. Hasebe Y. Hasegawa S. Shibata H. Yamamoto Y. Inada Center for Cooperative Research in Advanced Science and Technology Department of Management and System Science Science University of Tokyo Chino Nagano Japan Department of Mechano-Informatics and Systems School of Engineering University of Nagoya Nagoya Japan Mechatronics Technology Section Advanced Industrial Systems Technology Department Technology Research and Development Center Tokyo Engineering Corporation Narashino Chiba Japan

This paper proposes a flexible transfer system (FTS) as one of the self-organizing manufacturing systems. The FTS is composed of autonomous robotic modules, which transfer a palette carrying an object. Through the self-organization of a multilayer strategic vector field corresponding to a task, the FTS can generate quasi-optimal transfer path in fully distributed way. We apply the learning automata for path generation algorithm. Simulation is conducted to evaluate the basic performance of the system and the results show the feasibility of application. Also, the developed hardware is explained.

关键词： Distributed control Learning automata Production systems Centralized control Assembly systems Transportation systems engineering and theory Technology management engineering management Educational institutions

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