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research on a new energy-recovery system for hybrid hydraulic excavators

IOP conference Series: Earth and Environmental Science 2019年第4期300卷

作者： daqing Zhang Jun Gong Yuming Zhao Changsheng Liu Peng Hu Zhongyong Tang The National Enterprise R&D Center Sunward Intelligent Equipment CO. Ltd. Changsha China Department of Mechanical and Electrical Engineering Hunan University of Science and Technology. Xiangtan China The State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou China

Hydraulic excavators, especially medium and large excavators, waste a lot of energy during the frequent lifting-lowering process of its boom. recovery and regeneration the wasted energy is an important means to achieve energy saving and emission reduction of excavators. In this paper, a potential energy recovery and regeneration system based on a multi-cylinder structure working device is invented. Firstly, the theoretical analysis of the system, and the modeling and simulation research are carried out. results show that under the same boom-single-action conditions, the energy-saving efficiency of the excavator equipped with energy recovery system can reach 33%, it has important reference significance for evaluating the energy efficiency of the new system.

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29.1:Invited Paper:A Study on the Micro-Lens Arrays combination based Optical Film for Optical Field Optimized Projection display

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SId Symposium digest of Technical Papers 2019年第S1期50卷

作者： Liang ding Zhou Li dongbian Su Bingang Guo Pengfei Wang dengji Guo Cai Liu Dept. of R&D Shenzhen Holokook Technology Co. Ltd Shenzhen China Key Laboratory of In-fiber Integrated Optics of the Ministry of Education College of Science Harbin Engineering University Harbin China Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control Engineering Shenzhen University Shenzhen China Shenzhen Institute for Quantum Science and Engineering Dept. of Physics Southern University of Science and Technology Shenzhen China

Owning to the fast development of projection technologies, the large-scale projection has great potential application for various viewing circumstances in open spaces. This paper reports a novel type of optical imaging film (G2-HK-FP) which comprised of a combination of micro-lens arrays of different sizes and an ambient light rejection design. This film exhibited comparable displaying performance with silver screen film in the dark environment, and superior performance in the ambient light condition in the aspects of relative contrast, color gamut and ambient light rejection efficiency.

关键词： Projection Screen Micro-Lens Arrays combination Ambient Light rejection Pixelation removal

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Partial discharge Inception Voltage of Enameled Cellular Wire under Impulse Voltage

Partial Discharge Inception Voltage of Enameled Cellular Wir...

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IEEE International conference on dielectrics

作者： Kenta Maeda Tomohiro Kubo Tomoki Uchimura Hikaru Mizoguchi Masahiro Kozako Masayuki Hikita Hideo Fukuda daisuke Mutou Keiichi Tomizawa Keisuke Ikeda Department of Electrical Engineering Kyushu Institute of Technology Fukuoka Japan Technical department Furukawa Magnet Wire Co. Ltd Kanagawa Japan R&D division Furukawa Electric Co. Ltd Kanagawa Japan

In order to suppress partial discharge (Pd) generated in the wedge gap between an inverter drive motor windings due to overvoltage, the authors have developed a low permittivity film with micro cellular in an insulating layer resin. An attempt is made to measure partial discharge inception voltage (PdIV) for twisted pair sample of insulating film with micro cellular in the resin. This paper deals with experimental and analytical investigation on improved PdIV owing to micro cavities in the insulating layer under AC and impulse voltage application. Measured PdIV under AC and impulse voltage application is interpreted quantitatively in terms of Volume-Time theory which considers the generation probability of initial electrons supplied from both the solid insulating material surface and the wedge gap volume as well as a streamer inception criterion.

关键词： Inverter drive motor Cellular film Twisted pair Partial discharge Volume-Time theory

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research progress for flexible design and multi-objective optimization of steam power network

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Huagong Jinzhan/Chemical Industry and engineering Progress 2017年第6期36卷 1989-1996页

作者： Li, Shuai Jiang, Xiaobin He, Gaohong Xiao, Wu Lü, Junfeng Shi, Zhaoxia Luo, Li State Key Laboratory of Fine Chemicals R&D Center of Membrane Science and Technology Dalian University of Technology DalianLiaoning116024 China Beijing WorleyParsons Engineering Technology Co. Ltd. Beijing100015 China

Stream power system(SPS), which consumes the primary energy(coal etc.) to generate stream, electricity, mechanical power and the refrigerant, plays a vital role in process system. design and optimization of SPS should not only consider the flexibility to deal with the process from internal and external changes, but also to weigh the system of economic, environmental and other indicators to adapt to sustainable development. The flexibility and multi-criteria design of SPS have become the focus of process integration research. Initially, in this paper the research progress of design and optimization methods of SPS, heuristic method(i.e., the experience method), the thermodynamic target method, the mathematical programming method or the combination of them for example, were summarized. Moreover, the research situation of the flexible design of the SPS under the condition of certainty and uncertainty were analyzed. Finally, in past 10 years, multi-objective optimization design of SPS considering the economic, environmental, exergetic and other objectives and the cogeneration and renewable energy driven SPS were emphasized. research showed that it is the focus of future that simultaneous synthesis of SPS with chemical processes and heat exchanger network consider a variety of energy driven, flexibility, multi-objective optimization. © 2017, Chemical Industry Press. All right reserved.

关键词： Multiobjective optimization

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research on Weld Quality detection Method Based on Machine Vision and computer Image Processing

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IOP conference Series: Materials Science and engineering 2019年第5期631卷

作者： Bin Xue Shufang Ma Huihui Chu Kang Liu Shuangben Jiao Qingsen Meng Engineering and Technology R&D center of Mechanical and Electrical in Colleges of Shandong Qingdao Binhai University Qingdao Shandong 266555 PR China School of Mechanical and Electrical Engineering Qingdao Binhai University Qingdao Shandong 266555 PR China School of Material Science and Engineering Taiyuan University of Science and Technology Taiyuan Shanxi 030024 PR China Qingdao Zhongzhuang Vision Automation System Control Co. Ltd. Shandong 266555 PR China

In the weld quality inspection system based on machine vision and computer image processing, according to the principle of laser triangulation, a line laser is used to project structured light on the weld surface, and the weldment moves uniformly in a straight line on the moving platform. At the same time, the CMOS camera captures the structured light image and transmits it to the industrial computer through Gigabit Ethernet. The image is denoised by the median filtering algorithm on the industrial computer, then the image is segmented by the maximum inter-class error (Otus) method, and the image is binarized according to the threshold value. Then the center of the stripe is extracted by constructing four direction templates, and the 3d model is reconstructed by curve fitting. After the completion of the image processing, the geometric size of the weld is measured by mathematical formula. After the weld seam measurement is completed, the weld seam is transversely cut off at the same position, measured by manual method, and then the data measured by the two methods are compared. Through repeated measurements and comparisons of weld width, residual height and back forming, the precision of the system meets the practical requirements. The weld forming varies with the welding parameters within a certain range, but changes little and has good stability.

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Intracellular metabolite profiling of industrial yeast and the synthesis of flavour compounds in beer

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Journal of the Institute of Brewing 2017年第3期123卷 328-336页

作者： Yin, Hua dong, Jian-Jun Yu, Jun-Hong Zhong, Cheng Liu, Ling-Pu Liu, Miao Yang, Pan-Fei Hao, Jun-Guang Jia, Shi-ru State Key Laboratory of Biological Fermentation Engineering of Beer Tsingtao Brewery Co Ltd R&D Ctr QingdaoShandong266101 China Tianjin University of Science and Technology Tianjin300457 China

Beer quality is largely guaranteed by a rational ratio of different flavour compounds. In this study, we present intracellular metabolic profiles in the light of lager beer flavour compound synthesis on an industrial scale. A total of 62 intracellular metabolites were identified and quantitatively analysed. Among these, amino acid was identified as the most dominant category of metabolites. We also report gene expression profiling of relevant genes encoding six representing amino acids, including serine, alanine, lysine, valine, leucine and asparagine. Nine genes involved in the amino acid synthesis – ALT1, ALT2, ASN1, ASN2, BAT1, SEr2, SHM1, SHM2 and LYA1 – displayed significantly higher level of expression at various fermentation stages in an industrial lager fermentation. However, concentrations of the recovered amino acids decreased towards the end of fermentation. Our results suggested that the defined amino acids could be assimilated by the yeast to be utilized for synthesis of aroma-active metabolites at different stages in fermentation. copyright © 2017 The Institute of Brewing & distilling. copyright © 2017 The Institute of Brewing & distilling

关键词： Amino acids

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response surface modeling-based source contribution analysis and VOC emission control policy assessment in a typical ozone-polluted urban Shunde,China

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Journal of Environmental Sciences 2017年第1期29卷 294-304页

作者： Zhiqiang You Yun Zhu Carey Jang Shuxiao Wang Jian Gao Che-Jen Lin Minhui Li Zhenghua Zhu Hao Wei Wenwei Yang Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and EnergySouth China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China USEPA/offilce of Air Quality Planning&Standards RTPNC 27711USA Chinese Research Academy of Environmental Sciences Beijing 100012China Department of Civil Engineering Lamar UniversityBeaumontTX 77710-0024USA Guangzhou Urban Environmental Cloud Information Technology R&D Co.Ltd Guangzhou 511400China

To develop a sound ozone（O_3） pollution control strategy,it is important to well understand and characterize the source contribution due to the complex chemical and physical formation processes of O_*** the ＂Shunde＂ city as a pilot summer case study,we apply an innovative response surface modeling（rSM） methodology based on the community Multi-Scale Air Quality（CMAQ） modeling simulations to identify the O_3 regime and provide dynamic analysis of the precursor contributions to effectively assess the O_3 impacts of volatile organic compound（VOC） control *** results show that Shunde is a typical VOC-limited urban O_3 polluted *** ＂Jiangmen＂ city,as the main upper wind area during July 2014,its VOCs and nitrogen oxides（NO_x） emissions make up the largest contribution（9.06%）.On the contrary,the contribution from local（Shunde） emission is lowest（6.35%） among the seven neighbor *** local VOCs industrial source emission has the largest contribution comparing to other precursor emission sectors in *** results of dynamic source contribution analysis further show that the local NO_x control could slightly increase the ground O_3 under low（10.00%） and medium（40.00%）reduction ratios,while it could start to turn positive to decrease ground O_3 under the high NO_x abatement ratio（75.00%）.The real-time assessment of O_3 impacts from VOCs control strategies in Pearl river delta（Prd） shows that the joint regional VOCs emission control policy will effectively reduce the ground O_3 concentration in Shunde.

关键词： O_3 response surface model Source contribution analysis VOCs control policy

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Liquid behavior on EHd extraction phenomena under low-frequency AC voltage

Liquid behavior on EHD extraction phenomena under low-freque...

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International conference on conduction and Breakdown in dielectric Liquids

作者： Takuma Kajiura ryoichi Hanaoka Naoki Osawa Yoji Fujita Hidenobu Anzai Department of Electrical and Electronic Engineering Kanazawa Institute of Technology Nonoichim Ishikawa JAPAN R&D Department of Advanced Technology Development Fujikura Kasei Co. Ltd. Kuki Saitama JAPAN

ISBN: (纸本)9781509048786;9781509048779

This paper describes the results of research on an extraction phenomenon of liquids occurring at an atmospheric region between the liquid surface and the electrode under an AC voltage with a sine wave in the range 0.5 to 100 Hz. The relationship between the applied voltage, current, attractive force and liquid behavior is examined for three working liquids with a different physical property. The liquid behavior is discussed analytically on the bases of the experimental data.

关键词： Liquids Electrodes dielectric liquids Force Vegetable oils Ions

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Synthesis and photoelectrical performance of nanoscale PbS and Bi2S3 co-sensitized on TiO2 nanotube arrays

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Journal of Modern Transportation 2017年第1期25卷 52-57页

作者： Fanggong Cai Min Pan Yong Feng Guo Yan Yong Zhang Yong Zhao Superconductivity and New Energy R&D Center Key Laboratory of Advanced Technology of Materials(Ministryof Education of China)Southwest Jiaotong UniversityMail Stop 165#Cheng du 610031People's Republic of China National Engineering Labortary for Superconducting Materials Western Superconducting Technologies Co.LtdXi'anPeople's Republic of China School of Physical Science and Technology Southwest Jiaotong UniversityChengdu 610031People's Republic of China

TiO2 films have been widely applied in photo- voltaic conversion techniques. TiO2 nanotube arrays （TiO2 NAs） can be grown directly on the surface of metal Ti by the anodic oxidation method. Bi2S3 and PbS nanoparticles （NPs） were firstly co-sensitized on TiOa NAs （denoted as PbS/Bi2S3（n）/TiO2 NAs） by a two-step process containing hydrothermal and sonication-assisted SILAr method. When the concentration of Bi3＋ is 5 mmol/L, the best photoelectrical performance was obtained under simulated solar irradiation. The short-circuit photocurrent （Jsc） and photoconversion efficiency （η） of PbS/Bi2S3（5）/TiO2 NAs electrode were 4.70 mA/cm and 1.13 %, respectively.

关键词： Solar cells TiO2 nanotube arrays Bi2S3 PbS Surface photovoltage

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cover Feature: Pyrolysis of Iron-containing Polyanilines under Micropore Generation control: Electrocatalytic Performance in the Oxygen reduction reaction (ChemPlusChem 9/2020)

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ChemPlusChem 2020年第9期85卷 1950-1950页

作者： dr. Quang-duy dao dr. Yuhi Inada Masato daijo Hitoshi Haneoka Yosuke Murakami Nao Eguchi dr. Toru Amaya dr. Takeyuki Suzuki Takafumi Ohkawa dr. ryotaro Tsuji Prof. dr. Toshikazu Hirao Division of Electrical Electronic and Information Engineering Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan Present address: Faculty of Physics VNU-University of Science Vietnam National University Hanoi Thanhxuan Hanoi 120-034 Vietnam Kyoto Institute of Technology Matsugasaki Kyoto 606-8585 Japan The Institute of Scientific and Industrial Research Osaka University Mihoga-oka Ibaraki Osaka 567-0047 Japan Osaka R&D Laboratory Daihachi Chemical Industry Co. LTD. 3-5-7 Chodo Higashiosaka Osaka 577-0056 Japan Center for Scientific Instrument Renovation and Manufacturing Support Osaka University Mihoga-oka Ibaraki Osaka 567-0047 Japan Department of Applied Chemistry Graduate School of Engineering Osaka University Yamada-oka Suita Osaka 565-0871 Japan KANEKA Fundamental Technology Research Alliance Laboratories Graduate School of Engineering Osaka University Yamada-oka Suita Osaka 565-0871 Japan

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