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Influence of amount of oxidizing slag discharged from stainless steelmaking process of electric arc furnace on elution behavior into fresh water

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Journal of Physics: Conference Series 2012年第1期352卷

作者： S Yokoyama T Shimomura M N N Hisyamudin T Takahashi M Izaki Department of Mechanical Engineering Toyohashi University of Technology Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8105 Japan Graduate Program of Mechanical Engineering for Master's Degree Toyohashi University of Technology Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8105 Japan Faculty of Mechanical and Manufacturing Engineering University Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia Department of Chemical Science and Technology Miyakonojo National College of Technology Yoshio-cho Miyakonojo Miyazaki 885-8567 Japan

Fundamental study was carried out for provision for acidification of soil due to acid rain. The influence of weight of the additive slag on elution behavior of the slag into water was studied in this study. Elution experiment was carried out on a basis of JIS K 0058-1. Generally, the pH in the aqueous solution increased with an increase in weight of the additive slag. The pH converged to approximately eight. Calcium, magnesium and manganese, which were essential elements for plants, were eluted from the slag irrespective to elution condition. The eluted concentrations of Ca and Mg increased with an increase in weight of the additive slag. Silicon and zinc were also eluted depending on the conditions. Aluminum that was harmful for plants was not eluted from the used slag.

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Applicability of Carbonated Electric Arc Furnace Slag to Mortar

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Journal of Physics: Conference Series 2012年第1期352卷

作者： S Yokoyama R Arisawa M N N Hisyamudin K Murakami A Maegawa M Izaki Department of Mechanical Engineering Toyohashi University of Technology Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8105 Japan Graduate Program of Mechanical Engineering for Master's Degree Toyohashi University of Technology Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8105 Japan Faculty of Mechanical and Manufacturing Engineering University Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia Research Section of Material Technology Mie Prefecture Industrial Research Institute Takacyaya Tsu Mie 514-0819 Japan

Authors have been studying the absorption of CO2 in the steelmaking slag. In this study, an application of the electric arc furnace slag after the carbonation to admixture of mortar was investigated with the JIS (A6206-1997) method for ground granulated blast-furnace slag for concrete. The percent flows for the test mortar were smaller than that for the standard mortar. The percent flow of the carbonated slag whose average particle size of more than approximately 4 μm increased with an increase in the average size of the particles. Because the compressive strengths of the test mortar cured for 91 days were almost the same as those cured 28 days, the slag after the carbonation was thought not to have self-hardening property for a medium and long term. The compressive strength for the test mortar was almost unchanged within a range of approximately 2 to 7 μm of the average particle size, and it in this range was highest. The activity indexes for the test mortar prepared with the slag after the carbonation ranged from approximately 40 to 60 %.

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3-D Simulation of external cooling of aero-optical side window

3-D Simulation of external cooling of aero-optical side wind...

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International Conference on Communication Software and Networks, ICCSN

作者： Chun-Chi Li Yi-Chan Lin Ming-Chun Hsieh Department of Mechatronic Energy & AeroSpace Engineering NDU Taoyuan Taiwan Master Program of Mechanical Engineering Chung Cheng Institute of Technology NDU Taoyuan Taiwan

Under hypersonic flow environment, the aero-optical side window of optical guidance missile will trigger aero-thermodynamic effects causing high heat and cracks to optical windows which eventually leads to failure of optical windows. This study uses computational fluid dynamic as a tool to simulate hypersonic flow, optical side window cooling and jet flow design. Simulation results show that cooling effect with surface temperature less than 500K can be achieved when the external cooling jet flow reaches 0.125kg/s, thus meeting the needs of weight-bearing projectile. Since the optical side windows are located at leeward, greater angle of attack (AOA = 30) will result in a better cooling effect of the flow field under the condition with the present of AOA. Besides, the groove temperature for optical side window is similar to the temperature of cooling jet.

关键词： Optical imaging

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Bilateral control for omnidirectional bending motion of the DSD forceps teleoperation system with time varying delay

Bilateral control for omnidirectional bending motion of the ...

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2010 IEEE International Conference on Automation and Logistics, ICAL 2010

作者： Mikami, Hiroyuki Nishitani, Yosuke Hikita, Mitsutaka Ishii, Chiharu Hashimoto, Hiroshi Department of Mechanical Engineering Graduate School of Kogakuin University Nishishinjuku Shinjuku-Ku Tokyo Japan Department of Mechanical Engineering Hosei University Kajino-Cho Koganei-Shi Tokyo Japan Master's Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Higashiooi Shinagawa-Ku Tokyo Japan

ISBN: (纸本)9781424483754

Recently, robotic surgical support systems are in clinical use for minimally invasive surgery. We have developed a multi-DOF robotic forceps manipulator using a novel omnidirectional bending mechanism, and for the developed robotic forceps manipulator, we proposed a passivity based bilateral control that enables motion scaling in both position tracking and force tracking, and guarantees the stability of the teleoperation system in the presence of constant time delay, so far. In this paper, the passivity based bilateral control is improved so as to guarantee the stability of the teleoperation system not only in the presence of the constant time delay but also in the presence of the time varying delay. However, the proposed bilateral control law is applicable only to the one DOF bending motion of the robotic forceps. Therefore, using the change of coordinates, the proposed bilateral control scheme is extended so that it may become applicable to the omnidirectional bending motion of the robotic forceps. In order to verify the effectiveness of the proposed control scheme, experimental works were carried out for the developed robotic forceps. © 2010 IEEE.

关键词： Time delay

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Dynamical analysis of grasping with hand model for high quality product design

Dynamical analysis of grasping with hand model for high qual...

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作者： Hashimoto, Hiroshi Murakoshi, Hideki Sasaki, Akinori Ohyama, Yasuhiro Makino, Koji Yokota, Sho Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Tokyo Japan School of Computer Science Tokyo University of Technology Tokyo Japan Department of Mechanical Engineering Setsunan University Osaka Japan

ISBN: (纸本)9784907764364

Product design is an important process in industry whereas it has been usually performed based on aesthetics and static strength rather than on dynamical features of the product in use, or more specifically, in grasping. In this paper, dynamical analysis of grasping is to be discussed. Because it is difficult to deal with an actual hand dynamically interacting with an object, a hand model in dynamical simulation environment is used for the analysis. The hand model moves corresponding to a hand wearing a data glove. In the simulation, contact force vectors are calculated for each contact point between the hand model and the object to be grasped. © 2010 SICE.

关键词： Product design

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Visual motion observer-based pose control with panoramic camera via passivity approach

Visual motion observer-based pose control with panoramic cam...

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作者： Kawai, Hiroyuki Murao, Toshiyuki Fujita, Masayuki Department of Robotics Kanazawa Institute of Technology Ishikawa 921-8501 Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Tokyo 140-0011 Japan Department of Mechanical and Control Engineering Tokyo Institute of Technology Tokyo 152-8550 Japan

ISBN: (纸本)9781424474264

This paper considers the vision-based estimation and control with a panoramic camera via passivity approach. First, a hyperbolic projection of a panoramic camera is presented. Next, using standard body-attached coordinate frames (the world frame, mirror frame, camera frame and object frame), we represent the body velocity of the relative rigid body motion (position and orientation). After that, we propose a visual motion observer to estimate the relative rigid body motion from the measured camera data. We show that the estimation error system with a panoramic camera has the passivity which allows us to prove stability in the sense of Lyapunov. After that, stability and L 2-gain performance analysis for the closedloop system are discussed. Finally, simulation and experimental results are shown in order to confirm the proposed method. © 2010 AACC.

关键词： Cameras

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Visual motion observer-based stabilizing receding horizon control via image space navigation function

Visual motion observer-based stabilizing receding horizon co...

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IEEE Conference on Control Technology and Applications (CCTA)

作者： Toshiyuki Murao Hiroyuki Kawai Masayuki Fujita Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Tokyo Japan Department of Robotics Kanazawa Institute of Technology Ishikawa Japan Department of Mechanical and Control Engineering Tokyo Institute of Technology Tokyo Japan

This paper investigates stabilizing receding horizon control via an image space navigation function for a three-dimensional (3-D) visual feedback system. Firstly, a brief summary of a visual motion observer is given. Next, a visual motion error system is reconstructed in order to apply to time-varying desired motion. Then, visual motion observer-based stabilizing receding horizon control for the 3-D visual feedback system, highly nonlinear and relatively fast system, is proposed. Moreover, a path planner to be appropriate for the visual motion error system is designed through the image space navigation function to keep all features into a camera field of view. Finally, simulation results are shown in order to confirm the proposed method.

关键词： Visualization Navigation Cameras Aerospace electronics Lyapunov method Estimation error Feedback control

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Electric wheel-hub motors for light city vehicles

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AutoTechnology 2010年第2期10卷 58-63页

作者： Krebs, Gerhard Weber, Rolf Leppelsack, Simon Hochberg, Ulrich Engineering Company Evomotiv GmbH Stuttgart Germany Department RandD-Electronics Evomotiv GmbH Leinfelden-Echterdingen Germany Electric Powertrain Concepts Evomotiv GmbH Leinfelden-Echterdingen Germany Master's Program MME Faculty Mechanical Engineering University of Applied Sciences Offenburg Germany

The engineering company Evomotiv GmbH and the University of Applied Sciences Offenburg, with the support of the German Federal Ministry of Economy and Technology (BMWI), have developed a drive concept for light city scooters. The 60 kg concept prototype, aimed towards a series production of the highly-integrated, non-transmission and non-ferrous wheel-hub motor, will be tested on the track. The servo-loop motor-/brake-ECU and control-ECU are linked via FlexRay, providing an optimum base for feedback control applications. To guarantee the operation of common code generator and parallel programming by hand the software-structure is based on real-time Java. The compact and efficient Java codes, as well as the comprehensive standard library decreases the documentation decreases the documentation and those subsystems' vital functions.

关键词： Parallel programming

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Visual Motion Observer-based Pose Control with Panoramic Camera via Passivity Approach

Visual Motion Observer-based Pose Control with Panoramic Cam...

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American Control Conference

作者： Hiroyuki Kawai Toshiyuki Murao Masayuki Fujita Department of Robotics Kanazawa Institute of Technology Ishikawa 921-8501 Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Tokyo 140-0011 Japan Department of Mechanical and Control Engineering Tokyo Institute of Technology Tokyo 152-8550 Japan

ISBN: (纸本)9781424474264

This paper considers the vision-based estimation and control with a panoramic camera via passivity approach. First, a hyperbolic projection of a panoramic camera is presented. Next, using standard body-attached coordinate frames (the world frame, mirror frame, camera frame and object frame), we represent the body velocity of the relative rigid body motion (position and orientation). After that, we propose a visual motion observer to estimate the relative rigid body motion from the measured camera data. We show that the estimation error system with a panoramic camera has the passivity which allows us to prove stability in the sense of Lyapunov. After that, stability and L_(2)-gain performance analysis for the closed-loop system are discussed. Finally, simulation and experimental results are shown in order to confirm the proposed method.

关键词： panoramic cameras Passivity rigid body motion Standing Orders

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Effect of resin impregnation on mechanical properties of rice hull silica carbon

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International Journal of the Society of Material engineering for Resources 2010年第2期17卷 173-176页

作者： Asano, Jun Kimura, Mitsuhiro Takahashi, Takeshi Iizuka, Hiroshi Master's Program of Mechanical Systems Engineering Graduate School of Science and Engineering Yamagata University Jonan 4-3-16 Yonezawa 992-8510 Japan Sanwa Yushi Co. Ltd. Ichinichi-cho 4-1-2 Tendo 994-0044 Japan Faculty of Engineering Yamagata University Jonan 4-3-16 Yonezawa 992-8510 Japan

New utilization of rice hull, which is one of the agricultural by-products in Japan, is required to use as an industrial resource from a viewpoint of recycling. The rice hull silica carbon (RHS carbon) material is manufactured by mixing and impregnating the rice hull with a phenol resin, and then carbonizing in a nitrogen gas atmosphere at high temperatures. The RHS carbon has the natural porous structure that is originated from the natural structure of the rice hull. Since the RHS carbon has excellent frictional properties, it is expected to use as a friction element in a linear motion slider. However, the mechanical properties of the RHS carbon were dispersed largely, and were strongly affected by the making process. In this study, the authors discussed the effects of the impregnation rates of the phenol resin, and obtained the optimal impregnation rate to achieve the low dispersion in the mechanical properties. Moreover, the effect of the molding method on the mechanical properties was evaluated by some mechanical tests. © 2010 Soc. Mater. Eng. Resour.

关键词： Carbon

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