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Meter-Scale Thin-Walled Structure with Lattice Infill for Fuel Tank Supporting Component of Satellite:Multiscale Design and Experimental Verification

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Computer Modeling in engineering & Sciences 2024年第1期138卷 201-220页

作者： Xiaoyu Zhang Huizhong Zeng Shaohui Zhang Yan Zhang Mi Xiao Liping Liu Hao Zhou Hongyou Chai Liang Gao Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures Beijing Institute of TechnologyBeijing100081China Beijing Key Laboratory of Intelligent Space Robotic Systems Technology and Applications Beijing Institute of Spacecraft System EngineeringChina Academy of Space TechnologyBeijing100094China Key Laboratory of Metallurgical Equipment and Control Technology Ministry of EducationWuhan University of Science and TechnologyWuhan430081China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan430074China

Lightweight thin-walled structures with lattice infill are widely desired in satellite for their high stiffness-to-weight ratio and superior buckling strength resulting fromthe sandwich *** structures can be fabricated bymetallic additive manufacturing technique,such as selective laser melting(SLM).However,the maximum dimensions of actual structures are usually in a sub-meter scale,which results in restrictions on their appliance in aerospace and other *** this work,a meter-scale thin-walled structure with lattice infill is designed for the fuel tank supporting component of the satellite by integrating a self-supporting lattice into the thickness optimization of the *** designed structure is fabricated by SLM of AlSi10Mg and cold metal transfer welding ***-static mechanical tests and vibration tests are both conducted to verify the mechanical strength of the designed large-scale lattice thin-walled *** experimental results indicate that themeter-scale thin-walled structure with lattice infill could meet the dimension and lightweight requirements of most spacecrafts.

关键词： Thin-walled structure lattice infill supporting component selective laser melting satellite

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Stabilization of zinc anode by trace organic corrosion inhibitors for long lifespan

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Chinese Chemical Letters 2025年第3期36卷 538-543页

作者： Wenfeng Shao Chuanlin Li Chenggang Wang Guangsen Du Shunshun Zhao Guangmeng Qu Yupeng Xing Tianshuo Guo Hongfei Li Xijin Xu School of Physics and Technology University of JinanJi’nan 250022China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China School of Chemistry and Chemical Engineering Shandong UniversityJi’nan 250100China School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhen 518000China

Aqueous zinc-ion batteries are highly favored for their enhanced safety and reduced ***,there exist challenges including zinc dendrite,hydrogen evolution,and surface corrosion to be *** electrolyte additives is a highly convenient approach to solving zinc anode-related *** by industrial corrosion protection,a trace amount of the corrosion inhibitor urotropine(URT)is used as an electrolyte additive to protect the zinc *** calculation and experimental analysis confirm the adsorption of URT molecules onto the surface of Zn,which inhibits hydrogen *** adsorption further leads to the formation of an inorganic-organic bilayer solid electrolyte interface(SEI)on the surface of the zinc anode,effectively protecting the Zn anode from corrosion,hydrogen evolution and zinc *** presence of SEI enables symmetrical Zn//Zn cells to exhibit a long cycling performance of 1750 h at 1mA/cm^(2)and an average coulombic efficiency of 99.0%at 1mA/cm^(2)in Zn//Cu *** being coupled with polyaniline(PANI),the Zn//PANI full battery displays excellent cycle stability and specific capacity.

关键词： Solid electrolyte interface Aqueous zinc-ion battery Corrosion inhibitors Electrolyte additive Zinc anode

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A health self-sensing framework for electromechanical equipment using encoder signal 6

A health self-sensing framework for electromechanical equipm...

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6th IEEE International Conference on Sensing, Diagnostics, Prognostics, and Control, SDPC 2022

作者： Ou, Shudong Li, Sen Wu, Changqing Luo, Mourui Zhao, Ming Xi'an Jiaotong University State Key Laboratory for Manufacturing System Engineering Xi'an710049 China

ISBN: (数字)9781665469869

ISBN: (纸本)9781665469869

Health sensing plays a pivotal role to ensure the reliability of electromechanical equipment. However, conventional health sensing methods rely too heavily on additional sensors, while requirements of installation and wiring for external sensors limit their wide application in the era of industry 4.0. To this end, a health self-sensing approach for electromechanical equipment is proposed. Firstly, the health information is captured via rotary encoders that are more widely applied in electromechanical equipment. To separate the speed jitter caused by failure, a Gini-guided Robust principal component analysis (RPCA) method is proposed for further processing to realize self-sensing of equipment. Finally, the effectiveness of presented framework is verified by simulation and experiment. © 2022 IEEE.

关键词： Health

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Stackelberg-Game Computation Offloading Scheme for Parked Vehicle-Assisted VEC and Experiment Analysis

IEEE Transactions on Intelligent Vehicles

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IEEE Transactions on Intelligent Vehicles 2024年第9期9卷 1-12页

作者： Liu, Chunhong Zhao, Mengdi Wang, Huaichen Cheng, Bo Liu, Jialei Yuan, Peiyan Engineering Lab of Intelligence Business & Internet of Things and School of Computer and Information Engineering Henan Normal University Xinxiang China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle and School of Computer Engineering Hubei University of Arts and Science Xiangyang China

Vehicle edge computing (VEC) offers users low-latency and high-reliability services by using computational resources at the network's edge. Nevertheless, because of inadequate infrastructure and limited resources, computation-intensive and delay-sensitive vehicle applications cannot be performed efficiently at the edge. Therefore, several studies have used the idle resources of parked vehicles to assist in computation offloading. In this paper, we propose a parked vehicle-assisted vehicle edge computing architecture considering multi-agent collaboration, including intelligent vehicles and edge servers. Additionally, we propose a framework for a parallel Internet of Vehicles (IoV) utilizing computational experiment. The service provider is assigned the role of owning VEC resources and recruiting parking vehicle resources. The model was constructed by using the resource consumption-service relationship of both offloading parties to ensure service quality. First, a Stackelberg game model was constructed based on the interaction between requesting vehicles and a service provider. The latter was the leader, and the requesting vehicles were the followers. The Nash equilibrium for optimal pricing and offloading allocations was attained and verified, and a distributed gradient-based equilibrium algorithm was designed to solve the Stackelberg game model and obtain the final decision through mutual communication. The method also protects the privacy of participants and respects the willingness of requesting vehicles to offload. Finally, the simulation experiments confirmed that the proposed algorithm can achieve game equilibrium. Furthermore, it outperformed state-of-the-art algorithms in improving the service provider's utility. IEEE

关键词： Vehicles

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Snap-through path in a bistable dielectric elastomer actuator

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Applied Mathematics and Mechanics(English Edition) 2022年第8期43卷 1159-1170页

作者： Wenjie SUN Wentao MA Fei ZHANG Wei HONG Bo LI School of Mechanical and Precision Instrument Engineering Xi’an University of TechnologyXi’an710048China State Key Laboratory for Strength and Vibration of Mechanical Structures and School of Aerospace Xi’an Jiaotong UniversityXi’an710049China State Key Laboratory for Manufacturing System Engineering Shaanxi Key Lab for Intelligent RobotsSchool of Mechanical EngineeringXi’an Jiaotong UniversityXi’an710049China Department of Mechanics and Aerospace Engineering Southern University of Science and TechnologyShenzhenGuangdong Province518055China

The dielectric elastomer(DE)has attracted significant attention due to its desired features,including large deformation,fast response,and high energy ***,for a DE actuator(DEA)utilizing a snap-through deformation mode,most existing theoretical models fail to predict its deformation *** paper develops a new finite element method(FEM)based on the three-parameter Gent-Gent model suitable for capturing strain-stiffening *** simulation results are verified by experiments,indicating that the FEM can accurately characterize the snap-through path of a *** method proposed in this paper provides theoretical guidance and inspiration for designing and applying DEs and bistable electroactive actuators.

关键词： dielectric elastomer actuator(DEA) snap-through bistable finite element method(FEM) strain-stiffening behavior

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Truncated Strategy Based Dynamic Network Pricing for Energy Storage

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Journal of Modern Power systems and Clean Energy 2023年第2期11卷 544-552页

作者： Xiaohe Yan Hongcai Zhang Chenghong Gu Nian Liu Furong Li Yonghua Song State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University) BeijingChina State Key lab of Internet of Things for Smart City University of MacaoMacaoChina Department of Electronic and Electrical Engineering University of BathBathU.K.

With the increasing penetration of local renewable energy and flexible demand,the system demand is more unpredictable and causes network overloading,resulting in costly system *** the energy storage(ES)helps reduce the system peak power flow,the incentive for ES operation is not sufficient to reflect its value on the system investment deferral resulting from its *** paper designs a dynamic pricing signal for ES based on the truncated strategy under robust operation corresponding to the network charge ***,the operation strategy is designed for ES to reduce the total network investment cost considering the uncertainties of flexible load and renewable *** nodal uncertainties are converted into branch power flow uncertainties by the cumulant and Gram-Charlier expansion ***,a time of use(ToU)pricing scheme is designed to guide the ES operation reflecting its impact on network investment based on the longrun investment cost(LRIC)pricing *** proposed To U LRIC method allocates the investment costs averagely to network users over the potential curtailment periods,which connects the ES operation with network *** curtailment amount and the distribution of power flow are assessed by the truncated strategy considering the impact of *** demonstrated in a Grid Supply Point(GSP)distribution network in the UK,the network charges at the peak time reduce more than 20%with ES *** proposed method is cost-reflective and ensures the fairness and efficiency of the pricing signal for ES.

关键词： Energy storage network investment renewable energy robust optimization uncertainty

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Multi-legged robots: progress and challenges

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National Science Review 2023年第5期10卷 16-18页

作者： Yue Gao Bo Su Lei Jiang Feng Gao Mo E Key Lab of Artificial Intelligence AI InstituteShanghai Jiao Tong University China North Artificial Intelligence and Innovation Research Institute State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University

Considerable attention has been focused on multi-legged robots,with progress being made in the areas of mechanical design,actuators,controls,planning,and learning-based methods,as shown in *** robots are multi-input,multi-output,multi-end-effector ***,they are challenging to control when traversing *** recent years,

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Fabrication and characterization of high-sensitivity,wide-range,and flexible MEMS thermal flow velocity sensors

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Microsystems & Nanoengineering 2024年第4期10卷 139-151页

作者： Min Li Guangzhao Qin Chen Jia Danyu Zhang Zhikang Li Xiangguang Han Shusheng Xu Libo Zhao Guoxi Luo Cunlang Liu Ping Yang Qijing Lin State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemXi’an Jiaotong UniversityXi’an 710049China School of Instrument Science and Technology Xi’an Jiaotong UniversityXi’an 710049China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai 264000China Brightstone Innovation(Yantai)Research Institute for Micronano Sensing Technology Yantai 264006China Xi’an Jingwei Sensing Technology Co. Ltd.Xi’an 712000China

With the rapid development of various fields,including aerospace,industrial measurement and control,and medical monitoring,the need to quantify flow velocity measurements is *** is difficult for traditional flow velocity sensors to fulfill accuracy requirements for velocity measurements due to their small ranges,susceptibility to environmental impacts,and ***,to optimize sensor performance,a flexible microelectromechanical system(MEMS)thermal flow sensor is proposed that combines the working principles of thermal loss and thermal temperature difference and utilizes a flexible cavity substrate made of a low-thermal-conductivity polyimide/SiO_(2)(PI/SiO_(2))composite porous film to broaden the measurement range and improve the *** measurement results show that the maximum measurable flow velocity can reach 30 m/s with a resolution of 5.4mm/*** average sensitivities of the sensor are 59.49 mV/(m s−1)in the medium-to-low wind velocity range of 0–2 m/s and 467.31 mV/(m s^(−1))in the wind velocity range of 2–30 m/*** sensor proposed in this work can enable new applications of flexible flow sensors and wearable devices.

关键词： flow thermal utilize

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Acoustic Localization Method for Burst Point of Group Shot Projectile Based on Non-Parametric Estimation 2

Acoustic Localization Method for Burst Point of Group Shot P...

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2nd International Conference on Artificial Intelligence and Intelligent Information Processing, AIIIP 2023

作者： Zhang, Yahui Feng, Song Shang, Shuxian Tan, Weijie Wang, Yulong Zhang, Chunwei China Huayin Ordnance Test Center Huayin China State Key Laboratory of Public Big Data Guizhou Big Data Academy Guiyang China School of Mechanical Engineering State Key Laboratory for Manufacturing System Engineering Xi'an China

ISBN: (纸本)9798350371451

In the acoustic localization of mass projectiles, due to the large number of mass projectiles and short firing time, the traditional algorithm has some problems, such as waveform superposition and the order of explosion arrival at the sensor is not easy to distinguish. In order to solve this problem, an acoustic location method for burst point of mass projectile based on nonparametric estimation was proposed. The distribution of explosion probability function was calculated based on the measured acoustic waveform and regional explosion energy function. Then, the actual explosion point coordinates were obtained according to the extreme value. This method does not need to estimate the arrival time and arrival angle parameters, solves the problem that the order of arrival time is not easy to distinguish. Simulation and field tests show that the algorithm can effectively deal with 1∼32 projectiles fired in 2s, and solve the problem of explosion point location in the process of group gun surface attack exercise training and combat test. © 2023 IEEE.

关键词： Projectiles

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An Optimal Operation Control Framework for Digital Twin manufacturing Cell 16

An Optimal Operation Control Framework for Digital Twin Manu...

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16th CIRP Conference on Intelligent Computation in manufacturing engineering, CIRP ICME 2022

作者： Zhou, Yaguang Zhou, Guanghui Zhang, Chao School of Mechanical Engineering Xi'An Jiaotong University Xi'an710049 China State Key Laboratory for Manufacturing System Engineering Xi'An Jiaotong University Xi'an710054 China

Digital workshop is a new application of digital twin combined with discrete manufacturing workshop, which can completely improve the perception level of production status by synchronizing virtual workshop and physical workshop production behavior. To improve the level of operation control in the manufacturing process of digital twin workshop, this paper takes autonomous manufacturing cell as implementation scenario and proposes a data and model-driven framework for digital twin manufacturing cell (DTMC), which could support manufacturing cell optimal operation control by a completely modelling, perceiving and controlling strategy. In addition, three key enabling technologies including manufacturing cell production model, dynamic production status perception, disturbance optimal operation control strategy for supporting the optimal framework are analyzed. Then, an experimental test bed of DTMC is highlighted through a thus constructed production model of machine tool, robots, AGV, and workpiece. Finally, benefits of proposed framework and its current challenges are summarized. © 2023 Elsevier B.V.. All rights reserved.

关键词： Cytology

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