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第32届中国控制与决策会议

作者： Zhitao Wang Wenguang Luo Ming Ma Qiang Liu School of Electrical and Information Engineering Guangxi Key Laboratory of Automotive Parts and Vehicle TechnologyGuangxi University of Science and Technology

Based on the basic principle of magnetically coupled resonant wireless power transfer（WPT）,aiming at the series resonant circuit structure,the relationship between resonant topology efficiency and duty cycle is *** PI algorithm is added to the secondary side to realize the constant current wireless power transfer for the load and to improve the overall efficiency of the *** L-shaped load impedance matcher is used to improve the load adaptability of the system,so that the system can still ensure high efficiency under the condition of variable *** parameters of the series resonant circuit are designed,and the experimental analysis is carried out by using Saber *** experimental results show that the system realizes the constant current wireless power transfer after adding the control strategy,and can effectively ensure the high transmission efficiency of the system in the case of variable load.

关键词： magnetic coupling resonance wireless power transfer system transfer efficiency

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Grain carbon emission transfer and its spatiotemporal shifts based on the increasing supply-demand separation in China over the past three decades

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Science China Earth Sciences 2023年第5期66卷 1087-1107页

作者： Xinxian QI Xianjin HUANG Yaya SONG Danyang WANG Tianze ZHONG Zemiao LIU School of Geography and Ocean Science Nanjing UniversityNanjing210023China Key Laboratory of Carbon Neutrality and Territory Optimization Ministry of Natural ResourcesNanjing210023China

The food system is one of the major sources of anthropogenic greenhouse gas(GHG)*** impact of emission transfer due to the separation between food production and consumption within the context of carbon neutrality remains *** this study,we constructed an emission inventory for three types of grains at the production stage of their life cycle and then analysed the spatiotemporal evolution characteristics of the grain supply and *** the use of a spatial equilibrium model,we simulated the spatial distribution flow of the different types of grains from 1990 to 2018 and calculated the resulting GHG emission transfer *** main results include the following:(1)The imbalance between the grain supply and demand intensified,which was mainly reflected in the distance between the geographic centre of the grain supply and consumption increasing 3.2 times,and thus,the self-sufficiency decreased.(2)The total emission transfer TET of rice and wheat decreased because of the increase in the intra-regional supply,while that of maize gradually increased due to the increase in the inter-regional supply.(3)Overall,grain trade improved the carbon efficiency of grain production in *** trade efficiency of crops varied,with wheat and maize leading to overall effective carbon reductions,while the carbon transfer efficiency of rice from trade was relatively low.(4)The carbon footprint of grain production in China's provinces exhibited a downward trend,but due to the intensified separation between the grain supply and demand,certain major grain-producing areas achieved inefficient carbon ***,we suggest further optimization of the spatial structure of planting and breeding,strengthening of the grain supply in the region,and enhancement in the optimization of the low-carbon production structure and adjustment of cultivated land use combined with regional governance *** application of these measures could contribute to achieving d

关键词： Grains Life cycle Greenhouse gases Spatial equilibrium transfer efficiency Spatiotemporal shifts

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维普期刊数据库

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Power Balance Consideration in the Design of Indirectly Driven Targets

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Plasma Science and Technology 2013年第6期15卷 506-510页

作者： Masoumi MAHBOOBEH Ghasemizad ABBAS Gholamzadeh LEILA Physics Department Faculty of ScienceGuilan University Physics Department Yazd University

A preliminary design for a heavy ion driver inertial fusion（HIDIF） target is presented. The effect of target material and dimensions on transfer efficiency and symmetrical irradiation in the hohlraum are *** analysis led to the evaluation of optimal target materials and dimensions to achieve a positive power balance of an ICF power *** results show that the best choice is a high Z material for cavity wall materials and a low Z material for the capsule *** is concluded that for achieving the highest transfer efficiency and best symmetrization we need an area ratio between 5≤A2/A1≤9.

关键词： heavy ion beam indirect drive transfer efficiency symmetrization

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Effect of electrode voltage for NaCl coating on baked potato chips in continuous electrostatic coating system

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International Journal of Agricultural and Biological Engineering 2020年第3期13卷 213-216页

作者： Nutsuda Sumonsiri Prayoot Akkaraekthalin Vilai Rungsardthong Department of Agro-Industrial Foodand Environmental TechnologyFaculty of Applied ScienceKing Mongkut’s University of Technology North BangkokBangkok 10800Thailand Department of Electrical and Computer Engineering Faculty of EngineeringKing Mongkut’s University of Technology North BangkokBangkok 10800Thailand

Powder coating is an important process in the food industry,especially for snack foods such as potato chips,to create variety in food *** coating has been adopted in order to provide better transfer efficiency and lower the dust produced during *** the effect of electrode voltage on coating efficiency and evenness of baked potato chips using the developed electrostatic powder coating system was the main purpose of this *** types of NaCl(refined and table salts)were coated on baked potato chips at 0,30,40,50,60,and 70 *** coating with either refined or table salt,transfer efficiency,adhesion after coating,coating evenness and texture of samples were *** transfer efficiency,adhesion and coating evenness were observed when electrostatic coating was conducted at 30-50 *** samples with higher transfer efficiency,adhesion and evenness were obtained after electrostatic ***,it did not significantly affect hardness of baked potato chips.

关键词： electrostatic food powder coating sodium chloride adhesion transfer efficiency baked snack food

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FUNDAMENTAL STUDY ON A SECURE PRINTING PROCESS USING NANOWORK STENCILS FOR 01005 COMPONENTS

FUNDAMENTAL STUDY ON A SECURE PRINTING PROCESS USING NANOWOR...

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2016中国高端SMT学术会议

作者： Stefan Hrter Jrg Franke Carmina Lntzsch Institute for Factory Automation and Production Systems (FAPS) Friedrich-Alexander University Erlangen-Nürnberg (FAU)

The ongoing trend of miniaturization has induced many developments towards size reduction of electronic components for highly integrated electronic *** meet the increasing requirements on the surface mount technology each step of the process chain has to be considered as well as cross-process *** process of solder paste printing occupies a key position in electronics production and will be focused in this *** on literature,about 50%to80%of all process defects originate in the stencil printing process[1–5].Despite the exact percentage of failures the process of stencil printing needs to be characterized for miniaturized printed structures as the complexity of this process step increases using materials for high integration like fine-grained solder paste materials and stencils with small openings of the *** this study,a double-sided FR4 printed circuit board was developed that allows numerous variations within the entire process chain of assembly and interconnection *** previous investigations on the printing process,the solder paste types were identified as a major effect,therefore different solder paste materials will be *** stencil foil thicknesses and aperture geometries are employed and *** alloy of the solder paste is a lead-free tin/silver/copper（SAC305）of type 4 as well as type *** stencils for the study are laser-cutted,nano-coated and optimized for small aperture geometries and aspect *** of the experiments are findings on process windows for components of the size 01005 for a secure printing *** give an outlook the results will be adapted for even smaller passive components as the component size of 03015mm and 008004,respectively.

关键词： stencil printing nano-coating nanowork transfer efficiency area ratio 01005 03015mm solder paste inspection SPI

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