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Electromagnetic casting technique for slab.casting

Nippon Steel Technical Report 2013年第104期 62-68页

作者： Tani, Masahiro Zeze, Masafumi Toh, Takehiko Tsunenari, Keiji Umetsu, Kenji Hayashi, Kazunori Tanaka, Kazuhisa Fukunaga, Shinichi Yawata RandD Lab. 1-1 Tobihata-cho Tobata-ku Kitakyushu Fukuoka 804-8501 Japan Mathematical Science and Technology Research Lab. Advanced Technology Research Laboratories Japan Plant Engineering Div. Plant Engineering and Facility Management Center Japan Systems and Control Engineering Div. Plant Engineering and Facility Management Center Japan Mechanical Engineering Div. Plant Engineering and Facility Management Center Japan Steelmaking Div. Japan

In the electromagnetic casting (EMC) technique, an electromagnetic field is imposed by a solenoidal coil and a Lorentz force is generated at a meniscus. Consequently, a smooth cast surface without defects can be expected. So far concerning with EMC, the billet casting plant test, the slab.casting bench scale test on pilot caster and the numerical simulation have been conducted. Finally the slab.casting plant tests with the EMC technique were conducted. The castings were very stable and produced without any major difficulties. The qualities of slab.cast were greatly improved by the EMC technique.

关键词： Electromagnetic fields

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Development of steel surface melting technology for improvement of hot shortness caused by tramp elements

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Nippon Steel Technical Report 2013年第104期 69-73页

作者： Yamamoto, Ken-Ichi Toh, Takehiko Hamatani, Hideki Tsunenari, Keiji Umetsu, Kenji Maruki, Yasuo Takeuchi, Sunao Yamada, Yoshihiro Steelmaking RandD Div. Process Technology Center 20-1 Shintomi Futtsu Chiba 293-8511 Japan Mathematical Science and Technology Research Lab. Advanced Technology Research Laboratories Japan Nagoya R and D Lab. Japan Plant Engineering Div. Plant Engineering and Facility Management Center Japan Systems and Control Engineering Div. Plant Engineering and Facility Management Center Japan Mechanical Engineering Div. Plant Engineering and Facility Management Center Japan

Tramp elements such as Cu cause a severe hot shortness. However, Cu is the useful alloying element for increasing hardness and improvement of the steel properties and Cu is often added to the steels. Therefore, by means of a steel surface melting technology, hot shortness should be suppressed by the addition of Ni only in the surface layer. After hotrolled, the sheets are sandblasted and checked for surface defects due to hot shortness. There are no defects and steel samples alloyed in the surface layer are very clean. Consequently, steel containing Cu alloyed Ni in the surface layer does not indicate hot shortness at the surface.

关键词： Alloying elements

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Detection of driving fatigue based on grip force on steering wheel with wavelet transformation and support vector machine

Detection of driving fatigue based on grip force on steering...

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20th International Conference on Neural Information Processing, ICONIP 2013

作者： Li, Fan Wang, Xiao-Wei Lu, Bao-Liang Center for Brain-like Computing and Machine Intelligence Department of Computer Science and Engineering China MOE-Microsoft Key Lab. for Intelligent Computing and Intelligent Systems Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China

ISBN: (纸本)9783642420504

This paper proposes an unobtrusive way to detect fatigue for drivers through grip forces on steering wheel. Simulated driving experiments are conducted in a refitted passenger car, during which grip forces of both hands are collected. Wavelet transformation is introduced to extract fatigue-related features from wavelet coefficients. We compare the performance of k-nearest neighbours, linear discriminant analysis, and support vector machine (SVM) on the task of discriminating drowsy and awake states. SVM with radial basis function reaches the best accuracy, 75% on average. The results show that variation in grip forces on steering wheel can be used to effectively detect drivers' fatigue. © Springer-Verlag 2013.

关键词： Support vector machines

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Performance Analysis of Cooperative HADF Relaying V2I Communication systems for ND-symbol Burst Transmission using PSA-CE methods Over Quasi-Static Rayleigh Fading channels

Performance Analysis of Cooperative HADF Relaying V2I Commun...

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17th International IEEE Conference on intelligent Transportation systems & The Asia-Pacific Council on systems engineering Conference 2014

作者： Min Baek Gilwon Seo Chungha Bong Kyunbyoung Ko the Convergence-Information Technology Research Center for Next-Generation Intelligent Transport System (C-ITRC for NGITS) the Communication and Signal Processing Lab.(CSPL)the Department of IT ConvergenceKorea National University of Transportation50 Daehak-roChungju-siChungbuk380-702 Korea the Department of Control and Instrumentation Engineering Korea National University of Transportation50 Daehak-roChungju-siChungbuk380-702 Korea

In this paper,we derive the average symbol error rate(SER) for the ND-symbol burst hybrid adaptive decodeor-amplify-forward(HADF) relaying vehicle-to-infrastructure(V2I) communication systems over quasi-static independent and non-identical distributed(INID) Rayleigh fading *** proposed analytical approach includes channel estimation(CE)errors generated by practical pilot symbol assisted-CE(PSACE) ***,based on the error-events at relaying on board equipments(OBEs) for ND-symbol burst data transmission,the conditional SER expression has been derived as an exact ***,the approximated average SER(ASER)expressions are presented as the closed-forms and their accuracy is confirmed by the comparison with simulation ***,we can conclude that our analytical expressions are tractable forms,and can be used as a tool to verify effects of an erroneous detection and hybrid transmission at each relaying OBE on the combined signal-to-noise ratio(SNR) and ASER for cooperative HADF relaying communication systems.

关键词： SNR ADF Performance Analysis of Cooperative HADF Relaying V2I Communication systems for ND-symbol Burst Transmission using PSA-CE methods Over Quasi-Static Rayleigh Fading channels Rayleigh

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Performance Evaluation for Cooperative ADF Relaying V2I Communications with Burst transmission and PSA-CE schemes Over Quasi-Static Rayleigh Fading channels

Performance Evaluation for Cooperative ADF Relaying V2I Comm...

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17th International IEEE Conference on intelligent Transportation systems & The Asia-Pacific Council on systems engineering Conference 2014

作者： Gilwon Seo Min Baek Chungha Bong Kyunbyoung Ko the ConvergenceInformation Technology Research Center for Next-Generation Intelligent Transport System (C-ITRC for NGITS) the Communication and Signal Processing Lab.(CSPL)the Department of IT ConvergenceKorea National University of Transportation50 Daehak-roChungju-siChungbuk380-702 Korea the Department of Control and Instrumentation Engineering Korea National University of Transportation50 Daehak-roChungju-siChungbuk380-702 Korea

In this paper,we propose the analytical approach for adaptive decode-and-forward(ADF) relaying vehicle-toinfrastructure(V2I) schemes consisting of ND-symbol burst data transmission based on pilot symbol assisted-channel estimation(PSA-CE) methods over quasi-static Rayleigh fading *** first,we focus on the error-event at relaying on board equipments(OBEs) for ND-symbol burst data transmission,whereas previous researches considered one data symbol transmission so that they showed the best performance *** considering ND-symbol burst for ADF relaying schemes,we derive an exact bit error rate(BER) expression which can be the performance of practical ***,the practical channel estimation(CE) process is considered by pilot symbols ***,we investigate the effects of both a CE error and an estimated noise variance,which can be obtained by pilot symbol assisted(PSA)-CE methods,on the received signal-to-noise ratio(SNR) and ***,the average BER is derived in approximated closed-form expression for an arbitrary link *** derived analytical approach is verified based on the number of relaying OBEs,pilots,and data *** accuracy is confirmed by comparison with simulation results.

关键词： SNR Performance Evaluation for Cooperative ADF Relaying V2I Communications with Burst transmission and PSA-CE schemes Over Quasi-Static Rayleigh Fading channels Rayleigh ADF

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Farmland Monitoring by Sensor Networks and Airships

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IFAC Proceedings Volumes 2013年第18期46卷 321-326页

作者： Michael Gerke Ivan Masár Ulrich Borgolte Christof Röhrig Control Systems Engineering Group Fern Universität in Hagen Intelligent Mobile Systems Lab Dortmund University of Applied Sciences and Arts

This paper reports on the development of an automatic controlled airship for applications in environmental monitoring with special emphasis on precision farming. This covers direct monitoring from the air, e.g. with cameras; radar; lidar; gas, temperature, and humidity sensors. A new application area presented here is the interaction of ground based sensors with the airship. This allows wireless gathering of data even in large-scale or remote areas. Airships are combining features of planes and rotorcrafts. They allow measurements very close to the scene, they are able to carry even heavier payloads, and they can move very slowly as well as close above ground. As no dynamic force for lifting is necessary, all energy on board can be applied to movement, control electronics and sensor equipment. There are several inherent security features like low velocity, low weight, and a soft hull. In addition, active precautions for safe operation have been implemented.

关键词： Precision farming remote sensing airship control automatic operation unmanned aerial vehicle

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Thick crescent iced sub-conductors spacing influence on the aerodynamic properties

Thick crescent iced sub-conductors spacing influence on the ...

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2013 International Conference on Mechanics and Mechatronics, ICMM 2013

作者： Ma, Li-Jun Hao, Shu-Ying Zhang, Qi-Chang Tianjin Key Lab. for Control Theory and Applications in Complicated Systems Tianjin University of Technology Tianjin 300384 China School of Mechanical Engineering Tianjin University Tianjin 300072 China

ISBN: (纸本)9783037858714

Using computational fluid dynamics software FLUENT analysis and calculation the aerodynamic coefficient of the 28mm ice thickness crescent iced quad-bundle conductors under different spacing. Studies show that aerodynamic coefficient of downwind sub-conductors affected by wake-flow, with the upwind sub-conductors there is always a big difference. With different spacing values, quad-bundle iced conductors in the wake-flow of different effects. Upwind sub-conductors, spacing values have nothing to do with the aerodynamic coefficient. Downwind sub-conductors, drag coefficient in the larger change significantly, moment coefficient variation is relatively small. Sub-conductors spacing has no effect on the lift coefficient. © (2013) Trans Tech Publications, Switzerland.

关键词： Computational fluid dynamics

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Cladding-Pumped L-Band Multicore EDFA with Reduced Power Consumption

Cladding-Pumped L-Band Multicore EDFA with Reduced Power Con...

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LEOS Summer Topical Meetings

作者： Y. Tsuchida K. Maeda K. Watanabe T. Saito S. Takasaka M. Tadakuma R. Sugizaki H. Ogoshi K. Doi H. Matsuura K. Takeshima T. Tsuritani I. Morita FITEL Photonics Laboratory Furukawa Electric Co. Ltd. Ichihara Chiba Japan Mechanical Engineering and Intelligent Systems Miyagi Japan Tohoku-Gakuin University Tagajo Photonic Transport Network Laboratory KDDI R&D Laboratories Inc. Fujimini Saitama Japan Photonic Transp. Network Lab. KDDI R&D Labs. Inc. Fujimino Japan

Seven-core MC-EDFA pumped with single MM-LD optimized for L-band is developed. Output power of 19 dBm for each core is realized between 1576-1603nm with 33% reduced power consumption.

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Transient performance improvement using composite nonlinear feedback and integral sliding surface for matched and unmatched uncertain MIMO linear systems

Transient performance improvement using composite nonlinear ...

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International Conference on control, Instrumentation, and Automation

作者： Saleh Mobayen Mohammad Hasan Asemani Vahid Johari Majd Electrical Engineering Department University of Zanjan Zanjan Iran Department of Power and Control Engineering Shiraz University Shiraz Iran Intelligent Control Systems Lab. Tarbiat Modares University Tehran Iran

This paper offers a combination of composite nonlinear feedback and integral sliding mode to achieve high performance and robustness for matched and unmatched uncertain MIMO linear systems. The control law is designed to guarantee the existence of the sliding mode around the nonlinear surface, and the damping ratio of the closed-loop system is increased as the output approaches the set-point. Simulation results are presented to show the effectiveness of the proposed method as a promising way for controlling similar nonlinear systems.

关键词： Uncertainty Closed loop systems Robustness Feedback control Linear systems Eigenvalues and eigenfunctions

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Dependence of induced electric fields in human brain on working frequency in transcranial magnetic stimulation

Dependence of induced electric fields in human brain on work...

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World Congress on Medical Physics and Biomedical engineering

作者： Lu, Mai Ueno, Shoogo Key Lab. of Opt-Electronic Technology and Intelligent Control of Ministry of Education Lanzhou Jiaotong University Lanzhou 730070 China Department of Applied Quantum Physics Graduate School of Engineering Kyushu University Fukuoka 812-8581 Japan

ISBN: (纸本)9783642293047

Transcranial magnetic stimulation could provide new, non-invasive therapeutic options for various psychiatric and neurological disorders. In this work, we study the dependence of induced electric fields on working frequency in real human brain by usage the conventional figure-of-eight and round coils. The induced electric fields in brain tissues were calculated by using impedance method. The thresholds for motor neural activation at different frequencies were calculated by considering the motor strength-duration curve. Comparison of the induced electric fields at 3.6 kHz, 18 kHz and 36 kHz have been performed. Numerical results show that the induced electric fields can be distributed in the deep brain regions by increasing the working frequency. Since the threshold for motor neural activation increases dramatically with the increase of working frequency, we suggest the TMS application with higher frequency should work at a frequency less than 40 kHz. © 2013 Springer-Verlag.

关键词： Chemical activation

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