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Convergence analysis of distributed Kalman filtering for relative sensing networks

Frontiers of Information technology & Electronic Engineering 2018年第9期19卷 1063-1075页

作者： Che LIN Rong-hao ZHENG Gang-feng YAN Shi-yuan LU College of electrical Engineering Zhejiang Universit zhejiang province marine renewable energy electrical equipment and system technology research laborator

We study the distributed Kalman filtering problem in relative sensing networks with rigorous *** relative sensing network is modeled by an undirected graph while nodes in this network are running homogeneous dynamical models. The sufficient and necessary condition for the observability of the whole system is given with detailed proof. By local information and measurement communication, we design a novel distributed suboptimal estimator based on the Kalman filtering technique for comparison with a centralized optimal estimator. We present sufficient conditions for its convergence with respect to the topology of the network and the numerical solutions of n linear matrix inequality（LMI） equations combining system parameters. Finally, we perform several numerical simulations to verify the effectiveness of the given algorithms.

关键词： Relative sensing network Distributed Kalman filter Schur stable Linear matrix inequality

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Facilitating prelithiation of silicon carbon anode by localized high-concentration electrolyte for high-rate and long-cycle lithium storage

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Carbon energy 2024年第6期6卷 216-233页

作者： Yuanxing Zhang Borong Wu Jiaying Bi Xinyu Zhang Daobin Mu Xin-Yu Zhang Ling Zhang Yao Xiao Feng Wu School of Materials Science and Engineering Beijing Institute of TechnologyBeijingChina Chongqing Innovation Center Beijing Institute of TechnologyChongqingChina College of New energy Xi′an Shiyou UniversityXi′anChina Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouChina Key laboratory of Advanced energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjinChina

The commercialization of silicon-based anodes is affected by their low initial Coulombic efficiency(ICE)and capacity decay,which are attributed to the formation of an unstable solid electrolyte interface(SEI)***,a feasible and cost-effective prelithiation method under a localized highconcentration electrolyte system(LHCE)for the silicon-silica/graphite(Si-SiO_(2)/C@G)anode is designed for stabilizing the SEI layer and enhancing the *** thin SiO_(2)/C layers with-NH_(2) groups covered on nano-Si surfaces are demonstrated to be beneficial to the prelithiation process by density functional theory calculations and electrochemical *** SEI formed under LHCE is proven to be rich in ionic conductivity,inorganic substances,and flexible organic ***,faster Li+transportation across the SEI further enhances the prelithiation effect and the rate performance of Si-SiO_(2)/C@G *** also leads to uniform decomposition and high stability of the SEI with abundant organic *** a result,the prepared anode shows a high reversible specific capacity of 937.5 mAh g^(-1)after 400 cycles at a current density of 1 *** 811‖Li-SSGLHCE full cell achieves a high-capacity retention of 126.15 mAh g^(-1)at 1 C over 750 cycles with 84.82%ICE,indicating the great value of this strategy for Si-based anodes in large-scale applications.

关键词： localized high-concentration electrolytes prelithiation SEI layer silicon anode

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Integrated energy storage system based on triboelectric nanogenerator in electronic devices

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Frontiers of Chemical Science and Engineering 2021年第2期15卷 238-250页

作者： Xiao Feng Yang Zhang Le Kang Licheng Wang Chongxiong Duan Kai Yin Jinbo Pang Kai Wang School of electrical Engineering Qingdao UniversityQingdao 266071China Department of energy“Galileo Ferraris” Politecnico di TorinoTurin 10129Italy School of Materials Science and Engineering Xi’an University of Science and TechnologyXi’an 710054China School of Information Engineering Zhejiang University of TechnologyHangzhou 310023China School of Materials Science and energy Engineering Foshan UniversityFoshan 528231China Hunan Key laboratory of Super Microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410012China Collaborative Innovation Center of technology and equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinan 250022China

The emergence of electronic devices has brought earth-shaking changes to people's ***,an extemal power source may become indispensable to the electronie devices due to the limited capacity of *** one of the possible solutions for the extermal power sources,the triboelectric nanogenerator(TENG)provides a novel idea to the increasing mumber of personal electronic *** is a new type of energy ollector,which has become a hot spot in the field of *** is widely used at the acquisition and conversion of mechan-ical enegy to electrice energy through the principle of electrostatic *** this basis,the TENG could be integrated with the energy stonage system into a self-powered system,W hich can supply power to the electronic devices and make them work *** this review,TENG's basic structure as well as its working process and working mode are firstly *** integration method of TENGs with enegy storage systems and the related research status are then introduced in *** the end of this paper,we put forward some problems and discuss the prospect in the future.

关键词： electronic devices triboelectrice nanogenerator mechanical energy sel-powered system

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Message from Editors

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CES Transactions on electrical Machines and systems 2021年第4期5卷 271-272页

作者： Ronghai Qu Shoudao Huang Jianxin Shen Fengge Zhang Xiuhe Wang Metin Aydin Xiaoyong Zhu Yongxiang Xu Zhuoran Zhang Gaolin Wang Pinjia Zhang Hong Li Dawei Li academic degrees committee State and province Joint Engineering research Center of Novel electrical Machines Center for Advanced electrical Machines and Drives(CAEMD) State Key laboratory of Advanced Electromagnetic Engineering and technology Hunan University China zhejiang University China Shenyang University of technology China Shandong University China Kocaeli University Turkey Jiangsu University China Harbin Institute of technology China Nanjing University of Aeronautics and Astronautics China Tsinghua University China Huazhong University of Science and technology China

IN recent years,4th Industrial Revolution and Industry 4.0 have swept the world and deeply influenced the development of global industry *** movement arises wide attention to electric motor drive system which is playing an increasing important role in energy consumption transformation and environment *** this tremendous change in industry field,the concept of high-efficient,energy-saving and intelligent motor system has been *** one hand,motor system with advantages such as low vibration,low noise,weak magnetic interference,renewable utilization capacity,high-efficiency and high-reliability could promote the progress of major industries such as mining,renewable energy and cutting-edged equipment *** the other hand,the realization of intelligent and automated operations of motor drive system would help boosting the automation of industrial production.

关键词： operations realization boosting

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Highly aligned lithiophilic electrospun nanofiber membrane for the multiscale suppression of Li dendrite growth

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eScience 2022年第6期2卷 655-665页

作者： Jianan Wang Qianyue Ma Shiyi Sun Kai Yang Qiong Cai Emilia Olsson Xin Chen Ze Wang Amr MAbdelkader Yinshi Li Wei Yan Shujiang Ding Kai Xi Department of Environmental Science and Engineering Xi'an Key Laboratory of Solid Waste Recycling and Resource RecoverySchool of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049China Department of Applied Chemistry School of ChemistryUniversity Engineering Research Center of Energy Storage Materials and Chemistry of Shaanxi ProvinceState Key Laboratory for Electrical Insulation and Power EquipmentXi'an Jiaotong UniversityXi'an 710049China Department of Chemical and Process Engineering Faculty of Engineering and Physical SciencesAdvanced Technology InstituteUniversity of SurreyGuildford GU27XHSurreyEnglandUK Key laboratory of Thermo-Fluid Science and Engineering of Ministry of Education School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'anShaanxi710049China Advanced research Center for Nanolithography Science Park 1061098 XGAmsterdamthe Netherlands Institute of Physics and Institute for Theoretical Physics University of AmsterdamPostbus 944851090 GLAmsterdamthe Netherlands Faculty of Science and technology Bournemouth UniversityTalbot CampusFern BarrowPooleEnglandBH125BBUK

Using inorganic fibrous membranes as protective layers has yielded success in suppressing dendrite ***,conventional fibrous membranes usually have large voids and low affinity for Li,promoting inhomogeneous charge distribution and allowing some dendrites to ***,we introduce a highly aligned TiO_(2)/SiO_(2)(A-TS)electrospun nanofiber membrane as a protective layer for the Li metal *** A-TS membrane is fabricated by a custom-made electrospinning system with an automatic fiber alignment collector that allows control of the fibers’*** the scale of the individual fibers,their high binding energies with Li can attract more“dead”Li by reacting with the SiO_(2) component of the composite,avoiding uncontrollable deposition on the metal *** the membrane scale,these highly ordered structures achieve homogeneous contact and charge distribution on the Li metal surface,leaving no vulnerable areas to nucleate dendrite ***,the excellent mechanical and thermal stability properties of the A-TS membrane prevent any potential puncturing by dendrites or thermal runaway in a ***,an A-TS@Li anode exhibits stable cycling performance when used in both Li-S and Li-NCM811 batteries,highlighting significant reference values for the future design and development of high-energy-density metal-based battery systems.

关键词： Aligned structure Protective layerLi dendrite Lithium sulfur battery Li metal battery

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Layered oxide cathodes for sodium-ion batteries: From air stability, interface chemistry to phase transition

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InfoMat 2023年第6期5卷 1-43页

作者： Yi-Feng Liu Kai Han Dan-Ni Peng Ling-Yi Kong Yu Su Hong-Wei Li Hai-Yan Hu Jia-Yang Li Hong-Rui Wang Zhi-Qiang Fu Qiang Ma Yan-Fang Zhu Rui-Ren Tang Shu-Lei Chou Yao Xiao Xiong-Wei Wu College of Chemistry and Chemical Engineering Central South UniversityChangshathe People's Republic of China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouthe People's Republic of China College of Agronomy School of Chemistry and Materials ScienceHunan Agricultural UniversityChangshathe People's Republic of China Wenzhou Key laboratory of Sodium-Ion Batteries Wenzhou University Technology Innovation Institute for Carbon NeutralizationWenzhouthe People's Republic of China College of electrical and Information Engineering Hunan UniversityChangshathe People's Republic of China Hunan province Yin Feng New energy Co.Ltd Changshathe People's Republic of China

Sodium-ion batteries(SIBs)are considered as a low-cost complementary or alternative system to prestigious lithium-ion batteries(LIBs)because of their similar working principle to LIBs,cost-effectiveness,and sustainable availability of sodium resources,especially in large-scale energy storage systems(EESs).Among various cathode candidates for SIBs,Na-based layered transition metal oxides have received extensive attention for their relatively large specific capacity,high operating potential,facile synthesis,and environmental ***,there are a series of fatal issues in terms of poor air stability,unstable cathode/electrolyte interphase,and irreversible phase transition that lead to unsatisfactory battery performance from the perspective of preparation to application,outside to inside of layered oxide cathodes,which severely limit their practical *** work is meant to review these critical problems associated with layered oxide cathodes to understand their fundamental roots and degradation mechanisms,and to provide a comprehensive summary of mainstream modification strategies including chemical substitution,surface modification,structure modulation,and so forth,concentrating on how to improve air stability,reduce interfacial side reaction,and suppress phase transition for realizing high structural reversibility,fast Na+kinetics,and superior comprehensive electrochemical *** advantages and disadvantages of different strategies are discussed,and insights into future challenges and opportunities for layered oxide cathodes are also presented.

关键词： air stability interface chemistry layered oxide cathodes phase transition sodium-ion batteries

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The research of Series-parallel Hybrid Power Press Based on Loose Coupling

The Research of Series-parallel Hybrid Power Press Based on ...

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2005国际机械工程与力学会议

作者： Ruiming WU Deyu SONG School of Mechanical ＆ Automotive Engineering Zhejiang University of Science and Technology

In the complex and automatization Press equipment, Hydraulic Press or mechanical Press are unable to meet fast work cycle, big pressure, high precision and multipoint union demands. The main problem is the limitation of mechanism. To solve these problems, energy control of Press is put forward. Series-parallel hybrid power Press was brought forward to meet working ability, efficiency and process precision. Series-parallel hybrid power Press achieved through various series and parallel mechanisms of power. Through analysis of electrical, mechanical and hydraulic systems about energy storage device, hybrid power Press and loose coupling of different energy based on fault-tolerant control were applied to improve Press performance and efficient. All power work together in an optimal manner with monitor. Low fuel consumption was realized. According to the design of Press, one power can start unrestrictedly without worrying about damage to the other power. To solve system chattering problem and the derivative compute of control signals, nonlinear differential and integral sliding adaptive control was introduced.

关键词： Series-parallel hybrid power Press Power control Redundancy Fault-tolerant Loose coupling

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