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2010 IEEE 5th International Conference on Bio-Inspired Computing: Theories and Applications, BIC-TA 2010

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos S. Coelho, Leandro Ayala-Rincón, Mauricio Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia D.F. Brazil Industrial and Systems Engineering Graduate Program LAS/PPGPES Pontifical Catholic University of Parana Curitiba Parana Brazil Department of Computer Science and Mathematics University of Brasilia Brasilia D.F. Brazil

ISBN: (纸本)9781424464388

Particle Swarm Optimization (PSO) algorithms have been proposed to solve engineering problems that require to find an optimal point of operation. There are several embedded applications which requires to solve online optimization problems with a high performance. However, the PSO suffers on large execution times, and this fact becomes evident when using Reduced Instruction Set Computer (RISC) microprocessors in which the operational frequencies are low in comparison with the high operational frequencies of traditional personal computers (PCs). This paper compares two hardware implementations of the parallel PSO algorithm using an efficient floating-point arithmetic which perform computations with large dynamic range and high precision. The full-parallel and the partially-parallel PSO architectures allow the parallel capabilities of the PSO to be exploited in order to decrease the running time. Three well-known benchmark test functions have been used to validate the hardware architectures and a comparison in terms of cost in logic area, quality of the solution and performance is reported. In addition, a comparison of the execution time between the hardware and two C-code software implementations, based on a Intel Core Duo at 1.6GHz and a embedded Microblaze microprocessor at 50MHz, are presented. © 2010 IEEE.

关键词： Global optimization

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Frontiers in neuromedical engineering

Frontiers in neuromedical engineering

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2010 IEEE/ICME International Conference on Complex Medical engineering, CME2010

作者： Wu, Jinglong Yang, Jiajia Li, Chunlin Yan, Tianyi Wang, Haibo Li, Xiujun Department of Mechanical Engineering Faculty of Engineering Okayama University Japan 3-1-1 Tsushima-naka Okayama Japan International WIC Institute Beijing University of Technology China Department of Energy Systems Engineering Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology Japan

In this article, we introduced some topics relevant to neuromedical engineering and used several measurement methods. In the future, we will continue to develop new technologies and search for new ideas for diagnosing...

ISBN: (纸本)9781424468430

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Logic-based switching control of trains with actuator failures

Logic-based switching control of trains with actuator failur...

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作者： Takagi, Taro Takahashi, Masanori Graduate School of Industrial Engineering Tokai University Kumamoto 9-1-1 Toroku Kumamoto 862-8652 Japan Department of Mechanical Systems Engineering Tokai University Kumamoto 9-1-1 Toroku Kumamoto 862-8652 Japan

ISBN: (纸本)9784907764364

In this paper a fault-tolerant control system (FTCS) is developed for electric trains with actuator failures. The proposed FTCS is based on a hybrid of static and dynamic redundancies. For the FTCS, a unity high-gain feedback controller is introduced to attain the stabilization and the asymptotic tracking. In addition, to select an appropriate redundancy, a switching logic is designed with the tracking error signal. Therefore, even if the failure is unknown, the logic-based switching can avoid a fatal and inhibitory accident. This paper also shows several numerical simulations to confirm the effectiveness of the FTCS. © 2010 SICE.

关键词： Fault tolerance

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Geometric modeling from the medical images in the CAD system to support prosthesis design

Geometric modeling from the medical images in the CAD system...

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International Conference on Computers & industrial engineering (CIE)

作者： Osiris Canciglieri M. Rudek Tiago Francesconi Teófilo Miguel de Souza Pontificia Universidade Catolica do Parana Curitiba PR BR Industrial and Systems Engineering Graduate Program (PPGEPS) Pontifical Catholic University of Paraná Curitiba Parana Brazil Department of Manufacturing Engineering of Pontifical Industrial and Systems Engineering Graduate Program (PPGEPS) Curitiba PR Brazil Department of Electrical Engineering São Paulo State University (UNESP) Guaratinguetá SP Brazil

This paper presents an individual designing prosthesis for surgical use and proposes a methodology for such design through mathematical extrapolation of data from digital images obtained via tomography of individual patient's bones. Individually tailored prosthesis designed to fit particular patient requirements as accurately as possible should result in more successful reconstruction, enable better planning before surgery and consequently fewer complications during surgery. Fast and accurate design and manufacture of personalized prosthesis for surgical use in bone replacement or reconstruction is potentially feasible through the application and integration of several different existing technologies, which are each at different stages of maturity. Initial case study experiments have been undertaken to validate the research concepts by making dimensional comparisons between a bone and a virtual model produced using the proposed methodology and a future research directions are discussed.

关键词： Solid modeling Design automation Bones Tomography Prosthetics Surgery Image reconstruction

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Study of a spherical ultrasonic motor for haptic display system

Study of a spherical ultrasonic motor for haptic display sys...

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作者： Ishibashi, Ryota Ohara, Tomohiro Takesue, Naoyuki Arata, Jumpei Toyama, Shigeki Hoshina, Masahiko Hirai, Yoshiyuki Fukaya, Naoki Fujimoto, Hideo Nagoya Institute of Technology Nagoya Aichi Japan Graduate School of System Design Tokyo Metropolitan University Tokyo Japan Department of Mechanical Systems Engineering Tokyo University of Agriculture and Technology Tokyo Japan Graduate School of System Design Tokyo Metropolitan College of Industrial Technology Tokyo Japan

ISBN: (纸本)9781424474530

In this paper, we examine a Spherical Ultrasonic Motor (SUSM) for the haptic display system. Experimental system consists of a force sensor and a SUSM comprising one spherical rotor and three ring-shaped stators. The stator is made from an elastic body and piezoelectric elements for vibration. The stators and the rotor are in pressure contact with each other. The frequency and the phase difference of the stators' vibration can be controlled and we can generate torque of the rotor. Some experiments were briefly investigated to examine the performances of the proposed haptic display method. ©ICROS.

关键词： Stators

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Logic-based switching control of trains with actuator failures

Logic-based switching control of trains with actuator failur...

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SICE Annual Conference

作者： Taro Takagi Masanori Takahashi Graduate School of Industrial Engineering Tokai University Tohoku Kumamoto Japan Department of Mechanical Systems Engineering Tokai University Tohoku Kumamoto Japan

ISBN: (纸本)9781424476428

关键词： Switches Actuators Redundancy Fault tolerant systems Adaptive control

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Underactuated control for nonholonomic mobile robots by using double integrator model and invariant manifold theory

Underactuated control for nonholonomic mobile robots by usin...

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2010 IEEE/RSJ International Conference on Intelligent Robots and systems

作者： Keigo Watanabe Takahiro Yamamoto Kiyotaka Izumi Shoichi Maeyama Department of Intelligent Mechanical Systems Division of Industrial Innovation Sciences Graduate School of Natural science and Technology Okayama University Okayama Japan Department of Mechanical Engineering Graduate School of Science and Engineering Saga University Saga Japan

In a stabilizing control for nonholonomic mobile robots with two independent driving wheels, a nonholonomic double integrator in the kinematic model is first considered as a controlled object model. Then, a quasi-continuous exponential stabilizing control method is proposed as one of underactuated control methods by using invariant manifold theory. Next, to extend the velocity input control in a kinematic level to the torque input control in a dynamical level, an extended nonholonomic double integrator consisting of the kinematic and dynamical models is treated as a controlled object model. A quasi-continuous exponential stabilizing controller is further derived for such an extended model by using the same way as used in the kinematic level control. The effectiveness of the present method is proved with some demonstrative simulations.

关键词： Manifolds Kinematics Mobile robots Switches Wheels

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Effect of anisotropie yield functions on the accuracy of hole expansion simulations for 590 MPa grade steel sheet

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Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan 2010年第9期96卷 557-563页

作者： Hashimoto, Kazuma Kuwabara, Toshihiko Iizuka, Eiji Yoon, Jeong-Whan Graduate School of Mechanical Systems Engineering Tokyo University of Agriculture and Technology 2-24-16 Nakacho Koganei Tokyo 184-8588 Japan Division of Advanced Mechanical Systems Engineering Graduate School of Engineering Tokyo University of Agriculture and Technology Japan Forming Technology Research Department JFE Steel Corporation Japan Faculty of Engineering and Industrial Sciences Swinburne University of Technology Australia

The deformation behavior of a high-strength steel alloy with a tensile strength of 590 MPa is investigated both experimentally and analytically to clarify the effect of the material model (anisotropic yield function) on the predictive accuracy of the finite element simulation of hole expansion. Biaxial tensile tests of the test material have been carried out. Measured contours of plastic work and the directions of plastic strain rates are found to be in good agreement with those predicted using the Yld2000-2d yield function with an exponent of 6. The anisotropy in uniaxial tensile flow stresses and r-values has been also in good agreement with those predicted by the Yld2000-2d yield function, as opposed to the previous study [***, ***, E. Iizuka and J.-***: J. Jpn. Soc. Technol. Plast., 50 (2009), 925]. Forming simulations of and experiments on the hole expansion of the test material have been carried out using the von Mises, Hill's quadratic and the Yld2000-2d yield functions with different exponents. The Yld2000-2d yield functions have given the closest agreement with the experimental results. Consequently, it is found that anisotropic yield functions significantly affect the predictive accuracy of the deformation behavior of an anisotropic sheet metal subjected to hole expansion and that the biaxial tensile test is effective in identifying a proper anisotropic yield function to be used in the hole expansion simulation.

关键词： Finite element method

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Biogeography-Based Optimization Combined with Predator-Prey Approach Applied to Economic Load Dispatch

Biogeography-Based Optimization Combined with Predator-Prey ...

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Brazilian Symposium on Neural Networks

作者： Marsil de Athayde Costa e Silva Leandro dos Santos Coelho Undergraduate Course in Mechatronics Engineering Pontifical Catholic University of Paraná (PUCPR) Curitiba Paraná Brazil Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Paraná (PUCPR) Curitiba Paraná Brazil

Economic Load Dispatch (ELD) problems are nonlinear constrained problems which occupy an important role in the economic operation of power system. Recently, as an alternative to the conventional mathematical approaches, evolutionary algorithms have been given much attention by researchers due to their ability to find good solutions in ELD problems. In this paper, a biogeography based-optimization approach is validated. Biogeography is the study of the geographical distribution of biological organisms. Furthermore, a new approach of the biogeography based-optimization methodology combined with predator-prey approach were proposed and validated for two test systems consisting of 15 and 20 generation units (thermal generators), respectively. Simulation results are compared with those of other studies reported in the literature.

关键词： Optimization Biogeography Mathematical model Generators Economics Convergence Equations

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A case study of concurrent engineering application on the development of parts for the White Goods industry in Brazil

A case study of concurrent engineering application on the de...

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International Conference on Computers & industrial engineering (CIE)

作者： Osiris Canciglieri R. J. B. de Sampaio J. P. B. Kovalchuk Teófilo Miguel de Souza Department of Manufacturing Engineering of Pontifical Catholic Industrial and Systems Engineering Graduate Program (PPGEPS) University of Paraná (PUCPR) Curitiba Parana Brazil Department of Electrical Engineering São Paulo State University Sao Paulo Brazil

This classical way to manage product development processes for massive production seems to be changing: high pressure for cost reduction, higher quality standards, markets reaching for innovation lead to the necessity of new tools for development control. Into this, and learning from the automotive and aerospace industries factories from other segments are starting to understand and apply manufacturing and assembly oriented projects to ease the task of generate goods and from this obtain at least a part of the expected results. This paper is intended to demonstrate the applicability of the concepts of Concurrent engineering and DFM/DFA (Design for Manufacturing and Assembly) in the development of products and parts for the White Goods industry in Brazil (major appliances as refrigerators, cookers and washing machines), showing one case concerning the development and releasing of a component. Finally is demonstrated in a short term how was reached a solution that could provide cost savings and reduction on the time to delivery using those techniques.

关键词： Doped fiber amplifiers Assembly Production Plastics Industries

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