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Research 2022年第2期2022卷 271-281页

作者： Lin Sun Yi Du Huanhuan Wei Wenlong Xu Wentao Xu Instiute of Photoelectronic Thin Film Devices and technology of Narkai University Tianjin 300350Chima Key laboratory of Photelectromic Thin Film Derices and Tecthmology of Tianjin Tianjin 300350China Enginering Research Center of Thin Filmn Photoeletronic technology Minstry of EducationTianjin 300350China national Institute for Adrvanced Materials Tiarjin 300350China

Neural perception and action-inspired electronics is becoming important for interactive human-machine interfaces and intelligent robots.A system that implements neuromorphic environmental information coding,synaptic signal processing,and motion control is *** aneuroinspired artifcialreflex arcthat possesses visual and'somatosensory dual aferent nerve paths and an eferent nerve path to control artificial muscles.A self-powered photoelectric synapse between the afferent and efferent nerves was used as thekey information *** artificial reflex arc successfully responds to external visual and tactile information and controls the actions of artificial muscle in response to these external stimuli and thus emulates reflex activities through a full refex *** visual and somatosensory information is encoded as impulse spikes,the frequency of which exhibited a sublinear dependence on the obstacle proximity orpressure *** artificial reflex arc suggests a promising strategy toward developing soft neurorobotic systems and prostheses.

关键词： desired obstacle artificial

Localization and Navigation of intelligent Wheelchair in Dynamic Environments

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Localization and Navigation of Intelligent Wheelchair in Dyn...

A strategy to control microstructures of a Ni-based superalloy during hot forging based on particle swarm optimization algorithm

2013年中国智能自动化学术会议

作者： Jingchuan Wang Juncheng Wang Weidong Chen Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China State Key laboratory of Robotics and System(HIT)

An intelligent wheelchair JiaoLong with multi-mode is developed for the handicapped and the *** is designed of two manipulate modes according to the user’s disability and the environments for *** on the dynamic localizability matrix,an improved particle filter localization algorithm is proposed in this *** results of experiments show the practicability of the system design and the effectiveness provided by the improved localization method.

关键词： intelligent Wheelchair control modes Localization Algorithm

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Advances in Manufacturing 2019年第2期7卷 238-247页

作者： Dong-Dong Chen Yong-Cheng Lin Xiao-Min Chen School of Mechanical and Electrical Engineering Central South University Changsha 410083 People's Republic of China State Key laboratory of High Performance Complex Manufacturing Changsha 410083 People's Republic of China College of Automotive and Mechanical Engineering Changsha University of Science and Technology Changsha 410114 People's Republic of China

In this study, a strategy based on the particle swarm optimization (PSO) algorithm is developed to control the microstructures of a Ni-based superalloy during hot forging. This strategy is composed of three parts, namely, material models, optimality criterions, and a PSO algo rithm. The material models are utilized to predict microstructure information, such as recrystallization volume fraction and average grain size. The optimality crite? non can be determined by the designed target microstructures and random errors. The developed strategy is resolved using the PSO algorithm, which is an intelligent optimal algorithm. This algorithm does not need a derivable objective function, which renders it suitable for dealing with the complex hot forging process of alloy components. The optimal processing parameters (deformation temperature and strain rate) are obtained by the developed strategy and validated by the hot forging experiments. Uniform and fine target microstructures can be obtained using the optimized processing parameters, which indicates that the developed strategy is effective for controlling the microstructural evolution during the hot forging of the studied superalloy.

关键词： Processing parameters Microstructure Particle swarm optimization (PSO) algorithm Superalloy

Ceramic particles reinforced copper matrix composites manufactured by advanced powder metallurgy:preparation, performance, and mechanisms

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International Journal of Extreme Manufacturing 2023年第3期5卷 200-234页

作者： Yi-Fan Yan Shu-Qing Kou Hong-Yu Yang Shi-Li Shu Feng Qiu Qi-Chuan Jiang Lai-Chang Zhang State Key laboratory of Automotive Simulation and control Jilin UniversityRenmin StreetNo.5988ChangchunJilin Province 130025People’s Republic of China Key laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityRenminStreetNo.5988ChangchunJilin Province 130025People’s Republic of China School of Materials Science and Engineering Jiangsu University of Science and TechnologyJilin Province 130025People’s Republic of China School of Mechanical and aerospace Engineering Jilin University270 Joondalup DriveJoondalupPerthWestern Australia 6027Australia Centre for Advanced Materials and Manufacturing School of EngineeringEdith Cowan UniversityZhenjiang 212003People’s Republic of China

Copper matrix composites doped with ceramic particles are known to effectively enhance the mechanical properties,thermal expansion behavior and high-temperature stability of copper while maintaining high thermal and electrical *** greatly expands the applications of copper as a functional material in thermal and conductive components,including electronic packaging materials and heat sinks,brushes,integrated circuit lead *** far,endeavors have been focusing on how to choose suitable ceramic components and fully exert strengthening effect of ceramic particles in the copper *** article reviews and analyzes the effects of preparation techniques and the characteristics of ceramic particles,including ceramic particle content,size,morphology and interfacial bonding,on the diathermancy,electrical conductivity and mechanical behavior of copper matrix *** corresponding models and influencing mechanisms are also elaborated in *** review contributes to a deep understanding of the strengthening mechanisms and microstructural regulation of ceramic particle reinforced copper matrix *** more precise design and manipulation of composite microstructure,the comprehensive properties could be further improved to meet the growing demands of copper matrix composites in a wide range of application fields.

关键词： copper matrix composites advanced powder metallurgy model prediction particle characteristics strengthening mechanism

A Thermo-Tunable Metamaterial as an Actively controlled Broadband Absorber

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Engineering 2023年第1期20卷 143-152页

作者： Xiao-Chang Xing Yang Cao Xiao-Yong Tian Lingling Wu State Key laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049China

Metamaterials have attracted increasing attention in recent years due to their powerful abilities in manipulating electromagnetic (EM) waves. However, most previously reported metamaterials are unable to actively control full-band EM waves. In this paper, we propose a thermo-tunable broadband metamaterial (T-TBM) using paraffin-based composites (PD-Cs) with different phase transition temperatures. Active control of the T-TBM reflection loss peaks from low to high frequency is realized by manipulating the solid–liquid state of the PD-Cs at different phase transition temperatures. The absorption peak bandwidth (where the reflection loss value is less than −30 dB) can be changed, while the broad bandwidth absorption (where the reflection loss value is less than −10 dB) is satisfied by adjusting the temperature of the T-TBM. It is shown that the stagnation of the phase transition temperature of the PD-Cs in the T-TBM provides a time window for actively controlling the EM wave absorption response under different thermal conditions. The device has a broad application prospect in the fields of EM absorption, intelligent metamaterials, multifunctional structural devices, and more.

关键词： Metamaterials Active control Thermally tunable Br oadband absorption

Research and Development of Electro‑hydraulic control Valves Oriented to Industry 4.0:A Review

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Chinese Journal of Mechanical Engineering 2020年第2期33卷 5-24页

作者： Bing Xu Jun Shen Shihao Liu Qi Su Junhui Zhang State Key laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China

Electro-hydraulic control valves are key hydraulic components for industrial applications and aerospace,which controls electro-hydraulic *** the development of automation,digital technology,and communication technology,electro-hydraulic control valves are becoming more digital,integrated,and intelligent in order to meet the requirements of Industry *** paper reviews the state of the art development for electro-hydraulic control valves and their related *** review paper considers three aspects of state acquisition through sensors or indirect acquisition technologies,control strategies along with digital controllers and novel valves,and online maintenance through data interaction and fault *** main features and development trends of electro-hydraulic control valves oriented to Industry 4.0 are discussed.

关键词： Hydraulic valves Electro-hydraulic technology Sensor control Digital hydraulic Fault diagnosis

A Bio-Inspired Global Finite Time Tracking control of Four-Rotor Test Bench System

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Computers, Materials & Continua 2018年第12期57卷 365-388页

作者： Rooh ul Amin Irum Inayat Li Aijun Shahaboddin Shamshirband Timon Rabczuk School of Automation Northwestern Polytechnical UniversityXi’an710072China Department of Computer Science National University of Computer and Emerging SciencesIslamabad44000Pakistan Department for Management of Science and technology Development Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Information technology Ton Duc Thang UniversityHo Chi Minh CityVietnam Institute of Structural Mechanics Bauhaus University Weimar99423WeimarGermany

A bio-inspired global finite time control using global fast-terminal sliding mode controller and radial basis function network is presented in this article,to address the attitude tracking control problem of the three degree-of-freedom four-rotor hover *** proposed controller provides convergence of system states in a predetermined finite time and estimates the unmodeled dynamics of the four-rotor *** model of the four-rotor system is derived with Newton’s force *** unknown dynamics of four-rotor systems are estimated using Radial basis *** bio-inspired global fast terminal sliding mode controller is proposed to provide chattering free finite time error convergence and to provide optimal tracking of the attitude angles while being subjected to unknown *** global stability proof of the designed controller is provided on the basis of Lyapunov stability *** proposed controller is validated by(i)conducting an experiment through implementing it on the laboratory-based hover system,and(ii)through *** of the proposed control scheme is also compared with classical and intelligent *** performance comparison exhibits that the designed controller has quick transient response and improved chattering free steady state *** proposed bioinspired global fast terminal sliding mode controller offers improved estimation and better tracking performance than the traditional *** addition,the proposed controller is computationally cost effective and can be implanted on multirotor unmanned air vehicles with limited computational processing capabilities.

关键词： Bio-inspired global fast terminal sliding mode controller attitude tracking radial basis function network four-rotor hover system

Progress toward the sustainable development of world cultural heritage sites facing land-cover changes

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The Innovation 2023年第5期4卷 87-95页

作者： Huadong Guo Fulong Chen Yunwei Tang Yanbin Ding Min Chen Wei Zhou Meng Zhu Sheng Gao Ruixia Yang Wenwu Zheng Chaoyang Fang Hui Lin Ana Pereira Roders Francesca Cigna Deodato Tapete Bing Xu International Research Center of Big Data for Sustainable Development Goals Beijing 100094China Key laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijng 100094China International Centre on Space Technologies for Natural and Cultural Heritage Under the Auspices of UNESCO Beijing 100094China Cooperative Innovation Center for Digitalization of Cultural Heritage in Traditional Vllages and Towns Hengyang Normal UniversityHengyang 421010China School of Geography Nanjing Normal UniversityNanjing 210023China Key laboratory of Poyang Lake Wetland and Watershed Research Ministry of Education&School of Geography and EnvironmentJiangxi Normal UniversityNanchang 330022China Faculty of Architecture and the Built Environment Delft University of Technology2600 AA Delftthe Netherlands Instiute of Atmospheric Sciences and Climate(SAC) National Research Council(CNR)Via del Fosso del Cavaliere 10000133 RomeItaly Italian Space Agency(ASI) Via del Politecnico snc00133 RomeItaly Department of Earth System Science Tsinghua UniversityBeijing 100084China

The quantification of the extent and dynamics of land-use changes is a key metric employed to assess the progress toward several Sustainable Development Goals(SDGs)that form part of the United Nations 2030 Sustainable Development *** terms of anthropogenic factors threatening the conservation of heritage properties,such a metric aids in the assessment of achievements toward heritage sustainability solving the problem of insufficient data ***,in this study,589 cultural World Heritage List(WHL)properties from 115 countries were analyzed,encompassing globally distributed and statistically significant samples of“monuments and groups of buildings”(73.2%),“sites”(19.3%),and“cultural landscapes”(7.5%).Land-cover changes in the WHL properties between 2015 and 2020 were automatically extracted from big data collections of high-resolution satellite imagery accessed via Google Earth Engine using intelligent remote sensing *** indexes(SIs)were estimated for the protection zones of each property,and the results were employed,for the first time,to assess the progress of each country toward SDG Target *** the apparent advances in SIs(10.4%),most countries either exhibited steady(20.0%)or declining(69.6%)SIs due to limited cultural investigations and enhanced negative anthropogenic *** study confirms that land-cover changes are among serious threats for heritage conservation,with heritage in some countries wherein the need to address this threat is most crucial,and the proposed spatiotemporal monitoring approach is recommended.

关键词： landscape heritage Engine

Temperature-responsive peristome-structured smart surface for the unidirectional controllable motion of large droplets

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Microsystems & Nanoengineering 2023年第5期9卷 219-232页

作者： Yunyun Song Jialei Yang Xu Zhang Zhongqiang Zhang Xinghao Hu Guanggui Cheng Yan Liu Guojun Lv Jianning Ding Institute of intelligent Flexible Mechatronics School of Mechanical EngineeringJiangsu UniversityZhenjiang 212013P.R.China State Key laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsFaculty of Vehicle Engineering and MechanicsDalian University of TechnologyDalian 116024P.R.China Key laboratory of Bionic Engineering(Ministry of Education) Jilin UniversityChangchun 130022P.R.China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003P.R.China School of Mechanical Engineering Yangzhou UniversityYangzhou 225127 JiangsuP.R.China

The manipulation of fast,unidirectional motion for large droplets shows important applications in the fields of fog collection and biochemical ***,driving large droplets(>5μL)to move directionally and quickly remains challenging due to the nonnegligible volume ***,we fabricated a scalable,bionic peristome substrate with a microcavity width of 180μm using a 3D printing method,which could unidirectionally drive a large water droplet(~8μL)at a speed reaching 12.5 mm/s by temperature-responsive *** substrate surface was grafted with PNIPAAm,which could reversibly change its wettability in response to temperature,thereby enabling a temperature-responsive smart surface that could regulate droplet movement in real-time by changing the temperature.A series of temperature-responsive smart patterns were designed to induce water transport along specific paths to further realize controllable droplet motion with the antibacterial treatment of predesignated *** ability to achieve temperature-responsive unidirectional motion and dynamic control of droplet movement could allow programmable fluidic biosensors and precision medical devices.

关键词： unidirectional surface motion

Different Forms of Phosphorus in Sediments Collected from Zhuyuan Outfall in the Yangtze Estuary, China

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Different Forms of Phosphorus in Sediments Collected from Zh...