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Speed Control Method of Electric Vehicle for Improving Passenger Ride Quality

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Intelligent Control and Automation 2017年第1期8卷 29-43页

作者： Hidetake Fuse Tohru Kawabe masayuki kawamoto Chiyoda Corporation Yokohama Japan Faculty of Engineering Information and Systems University of Tsukuba Tsukuba Japan International Innovation Interface Organization University of Tsukuba Tsukuba Japan

This paper proposes the new speed control method of electric vehicles by generating the longitudinal speed pattern for improving the ride comfort against the longitudinal acceleration/deceleration. Since the longitudinal acceleration/deceleration of EVs causes the discomfort of passengers, reducing such bad effect of acceleration/deceleration acting on passengers is very important for not only the ride comfort of passengers but also vehicle running safety. The proposed method is applying the general optimal control theory and it generates the speed pattern for improving the passenger ride quality based on evaluating the variations of acceleration and the jerk which is time derivative of the acceleration. The effectiveness of the present method is demonstrated through numerical experiments compared with some conventional methods.

关键词： Electric Vehicle Ride Quality Speed Pattern Acceleration/Deceleration Jerk

Basic Research on Phase Relation between Mold Flux Composition and Cuspidine

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Basic Research on Phase Relation between Mold Flux Compositi...

High Quality and High Speed Casting Technologies for Round Billet Caster

第七届(2009)中国钢铁年会

作者： Masahito Hanao masayuki kawamoto Corporate Research ＆ Development laboratories Sumitomo Metal IndustriesLtd

＜正＞1 Introduction In recent years,control of heat transfer has become to be considered as one of the main functions of mold flux in the continuous casting ***,mild cooling of solidified shell is important for the prevention of uneven thickness which causes longitudinal cracking on the surface of *** in the mold flux film, shown in Fig.1,brings the mild cooling.

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High Quality and High Speed Casting Technologies for Round B...

2007中国钢铁年会

作者： Masaya Asano Atsushi Hirata Hiroshi Hayashi Katsuyoshi Iwata Yuichi Tsukaguchi masayuki kawamoto Sumikin Iron ＆ Steel Corporation 1850 Minato Wakayama-cityWakayama 640-8555Japan Sumikin Iron ＆ Steel Corporation 1850 Minato Wakayama-cityWakayama 640-8555Japan Sumikin Iron ＆ Steel Corporation 1850 Minato Wakayama-cityWakayama 640-8555Japan Sumikin Iron ＆ Steel Corporation 1850 Minato Wakayama-cityWakayama 640-8555Japan Sumitomo Metal Industries.Ltd. Sumitomo Metal Industries.Ltd.

＜正＞1 Introduction The advanced round billet casting technologies, mild cooling mold flux,short stroke oscillation,mold taper of multiple type and secondary cooling of short pitch ring header,etc.,have been developed at Wakayama Steel Works. Round billets are directly supplied to seamless pipe mill without blooming process. So, round billet casting is superior to bloom casting because of the lower cost,shorter lead time and higher quality.

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高速连铸结晶器内的保护渣膜

鞍钢技术 2008年第5期 57-62页

作者： Masahito HANAO masayuki kawamoto 李惊鸿

连铸结晶器中形成的保护渣膜在润滑与传热方面起重要作用,但渣膜的厚度和结构还没有完全被人们所了解。本次研究中,保护渣膜试样是取自浇铸结束后连铸结晶器内,保留浇铸期间所处位置的渣膜。通过此次试验,清楚了结晶器内弯月面处保护渣... 详细信息

连铸结晶器中形成的保护渣膜在润滑与传热方面起重要作用,但渣膜的厚度和结构还没有完全被人们所了解。本次研究中,保护渣膜试样是取自浇铸结束后连铸结晶器内,保留浇铸期间所处位置的渣膜。通过此次试验,清楚了结晶器内弯月面处保护渣膜的厚度。根据显微镜下对渣膜截面的观察,研究了渣膜的结构,即渣膜的结晶情况。此外,基于上述观察结果,研究了结晶器内通过渣膜的传热现象,得出以下结论:(1)确认结晶器内保护渣膜的厚度约为1mm。玻璃层为连铸中钢水顶部的熔融保护渣,浇铸结束后成为薄膜,将其假定为浇铸期间的保护渣膜。(2)按结晶器保护渣消耗量可估算出浇铸期间渣膜中的液渣层厚度。(3)弯月面处渣膜约1mm厚时,辐射及传导的总热阻与渣膜和结晶器之间的界面热阻相等。(4)文中提到的界面热阻可能大于实际浇铸中结晶器的热阻。原因可能是由于这些热阻是在无钢水压力情况下测得的,实际结晶器内的界面热阻似乎较小。

关键词：连铸结晶器保护渣渣膜结晶弯月面界面热阻消耗

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圆坯铸机上的高质量和高拉速的连铸技术

圆坯铸机上的高质量和高拉速的连铸技术

Inelastic constitutive equation of plasma-sprayed ceramic thermal barrier coatings

2007中国钢铁年会

作者： Masaya Asano Atsushi Hirata Hiroshi Hayashi Katsuyoshi Iwata Yuichi Tsukaguchi masayuki kawamoto Sumikin钢铁集团公司1850Minato Sumikin钢铁集团公司1850Minato Sumikin钢铁集团公司1850Minato Sumikin钢铁集团公司1850Minato Sumitomo金属工业有限责任公司 Sumitomo金属工业有限责任公司

＜正＞1 引言在和哥山炼钢车间,研发了先进的圆坯连铸技术、结晶器缓冷保护渣、小振幅的振动、多锥度类型的结晶器和带有密排短间距冷却辊的二次冷却技术等。圆坯不用经过初轧处理而直接用于无缝钢管生产车间。所以,由于圆坯的浇注具有...

＜正＞1 引言在和哥山炼钢车间,研发了先进的圆坯连铸技术、结晶器缓冷保护渣、小振幅的振动、多锥度类型的结晶器和带有密排短间距冷却辊的二次冷却技术等。圆坯不用经过初轧处理而直接用于无缝钢管生产车间。所以,由于圆坯的浇注具有更低成本、更短的生产时间和更高的质量的特点,该技术优于常规大圆坯的浇注。在圆坯的浇注生产中,因为没有鼓肚出现,结晶器壁与凝固壳之间更容易形成气隙。因此,圆坯难以均

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Acta Metallurgica Sinica(English Letters) 2011年第2期24卷 161-168页

作者： masayuki ARAI Materials Science Research Laboratory Central Research Institute of Electric Power Industry

Ceramic thermal barrier coatings （TBCs） are a very important technology for protecting the hot parts of gas turbines （GTs） from a high-temperature environment. The coating stress generated in the operation of GTs brings cracking and peeling damage to the TBCs. Thus, it is necessary to evaluate precisely such coating stress in a TBC system. We have obtained a stress-strain curve for a freestanding ceramic coat specimen peeled from a TBC coated substrate by conducting the bending test. The test results have revealed that the ceramic coating deforms nonlinearly with the applied loading. In this study, an inelastic constitutive equation for the ceramic thermal barrier coatings deposited by APS is developed. The obtained results are as follows：（1） the micromechanics-based constitutive equation was formulated with micro crack density formed at splat boundary, and （2） it was shown that the numerical results for a nonlinearly deformed beam simulated by the developed constitutive equation agreed with the experimental results obtained by cantilever bending tests.

关键词： Inelastic constitutive equation Thermal barrier coating Gas turbine Micromechanics

Depolymerization of polyamide 6 in hydrophilic ionic liquids

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Green Energy & Environment 2019年第2期4卷 166-170页

作者： Akio Kamimura Yuto Shiramatsu Takuji kawamoto Department of Applied Chemistry Yamaguchi University

Polyamide 6 underwent an efficient depolymerization in hydrophilic ionic liquids under microwave irradiation at 300C. The depolymerization completed within 60 min. Caprolactam was readily separated by simple extraction procedure and the ionic liquids were recovered and reused for several times. Addition of catalytic amounts of DMAP(N,N-dimethylaminopyridine) promoted the depolymerization *** present improved procedure provides a method to avoid direct distillation procedure, which consumes energy for the separation of caprolactam from ionic liquids. Although some contamination of ionic liquids was observed, the present procedure provides a new possibility for the use of ionic liquids for plastic chemical recycling from the viewpoint of development of an energy-saving methodology. Use of solubility switchable ionic liquids is also examined to explore a possibility for better separation although depolymerization did not work well.

关键词： Chemical recycling Polyamides Chemical conversion Ionic liquids

Communication Scheduling with Diversity for Unmanned Aircraft Systems Using Local 5G

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Journal of Communications and Information Networks 2020年第1期5卷 50-61页

作者： Takeru Kitagawa Yuichi kawamoto Nei Kato Graduate School of Information Sciences Tohoku University Aramaki-Aoba 6-3-09Aoba-kuSendai980-8579Japan

The use of unmanned aircraft systems(UAS)for critical public service missions by public organizations,local governments,and social users is *** radio transmission by unmanned aerial vehicles(UAVs)is indispensable in these *** of the standards suitable for UAV wireless communications is local ***,to introduce local 5G into a UAS,several problems specific to UASes must be *** include the deterioration of the signal-to-noise ratio due to topography and obstacles,the uncertainty of the communication environment due to the movement of multiple UAVs,and the limitation of the frequency *** address these problems and to introduce local 5G into the UAS,we propose a novel communication scheduling *** method incorporates transmission modes with *** evaluations shows that total data volumes increase by 1.9~3 times with the proposed scheduling method compared with transmission without diversity or efficient scheduling.

关键词： unmanned aircraft system(UAS) unmanned aerial vehicle(UAV) local 5G diversity scheduling LTE sidelink time division multiple access(TDMA)

Fluidization science,its development and future

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Particuology 2010年第6期8卷 514-524页

作者： masayuki Horio Department of Politics Ryukoku University RISTEX Japan Science and Technology AgencyKojimachi Square 5F3 Niban-choChiyoda-kuTokyo 102-0084Japan

By revisiting the three stage theory for the progress of science proposed by Taketani in 1942, the footmarks of fluidization research are examined. The bubbling and fast fluidization issues were emphasized so that the future offluidization research can be discussed among scientists and engineers in a wider perspective. The first cycle of fluidization research was started in the early 1940s by an initial stage of phenomenology. The second stage of structural studies was kicked off in the early 1950s with the introduction of the two phase theory. The third stage of essential studies occurred in the early 1960s in the form of bubble hydrodynamics. The second cycle, which confirmed the aforementioned three stages closed at the turn of the century, established a general understanding of suspension structures including agglomerating fluidization, bubbling, turbulent and fast fluidizations and pneumatic transport; also established powerful measurement and numerical simulation *** a general remark on science, technology and society issues the interactions between fluidization technology and science are revisited. Our future directions are discussed including the tasks in the third cycle, particularly in its phenomenology stage where strong motivation and intention are always necessary, in relation also to the green reforming of the present technology. A generalized definition of ＇fluidization＇ is proposed to extend fluidization principle into much wider scientific fields, which would be effective also for wider collaborations.

关键词： Historical development of fluidization Science and society Taketani's three step law Paradigm shift Fluid catalytic cracking Phase transition Bubbling bed Fast fluidization Cluster Future direction