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| 1 | Design and experiment on intelligent fuzzy monitoring system for corn planters显示文摘When sowing summer corn without tillage,it is necessary to ensure that the furrow opener is free from straw congestion and that the spacing of the sowing can be adjusted according to the breeds of corn and the preset seeding rate per acre.On the basis of the structural features of newly developed no-tillage corn fertilizers,an intelligent fuzzy monitoring system for corn planters was developed in this study.The system facilitates automatic control of the spacing adjustment and the status monitor for the fertilizer tank,seed tank,and seeding orifice.According to the preset number of rows,line spacing,number of plants per acre,and seed germination rate,the control rate can be calculated through designing in surveillance software.The control rate is output to the fuzzy controller through the digital output module of the CAN bus.Fuzzy control is applied to the DC motor for stepless adjustment of the spacing.A system for video surveillance of the working status of a planter is developed for displaying a real-time video image of the planter operation and achieving an anti-congestion status monitoring of a no-tillage planting operation in a dusty environment.Through field trials,the detection accuracy was 91.4%.The seed-clogging fault-alarm accuracy was 96.0%.The entire system remained stable and reliable. | Du Ruicheng Gong Bingcai Liu Ningning Wang Chenchen Yang Zidong Ma Mingjian | 2013 | International Journal of Agricultural and Biological Engineering2013，6，3： | 16 |
| 2 | Controlled synthesis of single cobalt atom catalysts via a facile one-pot pyrolysis for efficient oxygen reduction and hydrogen evolution reactions显示文摘Metal-nitrogen doped carbon catalysts(M-N/C) with abundantly accessible M-Nxsites, particularly single metal atom M-N/C(SAM-N/C), have been developed as a substitute for expensive Pt-based catalysts.These catalysts are used to increase the efficiency of otherwise sluggish oxygen reduction reactions(ORR) and hydrogen evolution reactions(HER). However, although the agglomerated metal nanoparticles are usually easy to form, they are very difficult to remove due to the protective surface-coating carbon layers, a factor that significantly hampers SAM-N/C fabrication. Herein, we report a one-step pyrolysis approach to successfully fabricate single cobalt atom Co-N/C(SACo-N/C) by using a Co2+-SCN-coordination compound as the metal precursor. Thanks to the decomposition of Co2+-SCN-compound at lower temperature than that of carbon layer deposition, Co-rich particles grow up to larger ones before carbon layers formation. Even though encapsulated by the carbon layers, it is difficult for the large Co-rich particle to be completely sealed. And thus, it makes the Co atoms possible to escape from incomplete carbon layer, to coordinate with nitrogen atoms, and to form SACo-N/C catalysts. This SACo-N/C exhibits excellent performances for both ORR(half-wave potential of 0.878 V) and HER(overpotential at 10 mA/cm2 of178 m V), and is thus a potential replacement for Pt-based catalysts. When SACo-N/C is integrated into a Zn-O2 battery, battery with high open-circuit voltage(1.536 V) has high peak power density(266 mW/cm2)and large gravimetric energy density(755 mA h/gZn) at current densities of 100 mA/cm2. Thus, we believe that this strategy may offer a new direction for the effective generation of SAM-N/C catalysts. | Yao Wang Linhui Chen Zhanxin Mao Lishan Peng Rui Xiang Xianyi Tang Jianghai Deng Zidong Wei Qiang Liao | 2019 | Science Bulletin2019，64，15： | 10 |
| 3 | Fabrication of pure copper rods containing continuous columnar crystals by continuous unidirectional solidification technology显示文摘Pure copper rods containing continuous columnar crystals were fabricated using the downward CUS (Continuous Unidirectional Solidification) equipment. When the technological parameters were set as the ranges of mould temperature 1100-1300℃,cooling distance (the distance from the exit of the cast mould to the start point of cooling) 10-20 mm, casting speed 0.2-2.5 mm/s,cooling water (20-25℃) volume 1000-1320 L/h, and when these parameters matched reasonably, the CUS process was performed stably, and pure copper rods containing continuous columnar crystals with bright and smooth surface were produced. The dendritic arm spacing of the crystals in copper rods decreased with increasing the casting speed. The results of the texture by X-ray diffraction analysis showed that the rods has strong <100> fiber texture. | Hong zhang Jianxin Xie Zidong Wang Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China | 2004 | Journal of University of Science and Technology Beijing2004，11，3： | 9 |
| 4 | Continuous unidirectional solidification of QAl9-4 Cu-Al alloy显示文摘A continuous unidirectional solidification equipment with the advantages of electric slag remelting, induction heating, continuous casting and unidirectional solidification was built to study the QAl9 4 Cu Al alloy. The results show that the electro slag induction continuous unidirectional solidification process can be used for the steady continuous unidirectional solidification of QAl9 4, and revitalizes the down pulling continuous unidirectional solidification process; that the temperature distribution in the mold wall reflects that of the molten metal in the mold, thus the temperature distribution in the mold wall can be used to control the electric slag induction continuous unidirectional solidification process; and that the mutual matching of the technological parameters is the key to stabilize the solidification process. | Chang Guowei(常国威) Yuan Junping(袁军平) Wang Zidong(王自东) Wu Chunjing(吴春京) Hu Hanqi(胡汉起) Miao Zhimin(苗治民) | 1999 | 中国有色金属学会会刊:英文版1999，9，3： | 8 |
| 5 | Targeted Double Negative Properties in Silver/Silica Random Metamaterials by Precise Control of Microstructures显示文摘Te mechanism of negative permittivity/permeability is still unclear in the random metamaterials,where the precise control of microstructure and electromagnetic properties is also a challenge due to its random characteristic.Here silver was introduced into porous SiO_(2) microsphere matrix by a self-assemble and template method to construct the random metamaterials.Te distribution of silver was restricted among the interstices of SiO_(2) microspheres,which lead to the precise regulation of electrical percolation(from hoping to Drude-type conductivity)with increasing silver content.Negative permittivity came from the plasma-like behavior of silver network,and its value and frequency dispersion were further adjusted by Lorentz-type dielectric response.During this process,the frequency of epsilon-near-zero(ENZ)could be adjusted accordingly.Negative permeability was well explained by the magnetic response of eddy current in silver micronetwork.Te calculation results indicated that negative permeability has a linear relation with ω^(0.5),showing a relaxation-type spectrum,diferent from the“magnetic plasma”of periodic metamaterials.Electromagnetic simulations demonstrated that negative permittivity materials and ENZ materials,with the advantage of enhanced absorption(40dB)and intelligent frequency selection even in a thin thickness(0.1 mm),could have potentials for electromagnetic attenuation and shielding.Tis work provides a clear physical image for the theoretical explanation of negative permittivity and negative permeability in random metamaterials,as well as a novel strategy to precisely control the microstructure of random metamaterials. | Peitao Xie Zidong Zhang Zhongyang Wang Kai Sun Runhua Fan | 2019 | Research2019，，1： | 6 |
| 6 | Microstructure evolution of in-situ nanoparticles and its comprehensive effect on high strength steel显示文摘A novel steel strengthened by nanoparticles was investigated in this study. A Fe-based high-strength steel was developed by the trace-element regional supply method during deoxidization to generate in situ nanoparticles with a high number density in the matrix. The results show that the endogenous nanoparticles are aluminum oxide (AI2O3) and titanium oxide (Ti3O5) formed in the liquid melt. Al2O3 functioned as a heterogeneous nucleation site for MnS during solidification;the size of the resultant complex inclusions was approximately 1-2 jjim. Furthermore, 13 nm Nb(C,N) precipitates grew with the Ti30 5 during the tempering process. These in situ nanopartides strongly affected refining of the grain and inclusions. The investigated steel was strengthened more than 200 MPa by precipitation strengthening and more than 265 MPa by grain refinement strengthening according to the Ashby-Orowan mechanism and the Hall-Petch relationship, respectively. | Rongjian Shi Zidong Wang Lijie Qiao Xiaolu Pang | 2019 | Journal of Materials Science & Technology2019，35，9： | 6 |
| 7 | Pinning controllability of autonomous Boolean control networks显示文摘Autonomous Boolean networks(ABNs), which are developed to model the Boolean networks(BNs)with regulatory delays, are well known for their advantages of characterizing the intrinsic evolution rules of biological systems such as the gene regulatory networks. As a special type of ABNs with binary inputs, the autonomous Boolean control networks(ABCNs) are introduced for designing and analyzing the therapeutic intervention strategies where the binary inputs represent whether a certain medicine is dominated or not. An important problem in the therapeutic intervention is to design a control sequence steering an ABCN from an undesirable location(implying a diseased state) to a desirable one(corresponding to a healthy state). Motivated by such background, this paper aims to investigate the reachability and controllability of ABCNs with pinning controllers. Several necessary and sufficient criteria are provided by resorting to the semi-tensor product techniques of matrices. Moreover, an effective pinning control algorithm is presented for steering an ABCN from any given states to the desired state in the shortest time period. Numerical examples are also presented to demonstrate the results obtained. | Hongwei CHEN Jinling LIANG Zidong WANG | 2016 | Science China(Information Sciences)2016，59，7： | 5 |
| 8 | Analysis of precipitation in a Cu-Cr-Zr alloy显示文摘Precipites in Cu-0.42%Cr-0.21%Zr alloy were analyzed by using scanning electron microscope(SEM),energy dispersive X-ray spectroscopy(EDXS)and transmission electron microscope(TEM).After the solid solution was performed at 980oC for 2 h,water-quenched and aged at 450oC for 20 h,the precipite had a bimodal distribution of precipitate size.The coarse precipitates are pure Cr and Cu5Zr,the dispersed fine precipitate is CrCu2(Zr,Mg)and pure Cr ranging from 1 to 50 nm.The coarse phases formed during solidification and were left undissolved during solid solution.The fine precipitates are the hardening precipitates that form due to decomposition of the supersaturated solid solution during aging. | Zhao Mei Lin Guobiao wang Zidong Zhang Maokui | 2008 | China Foundry2008，5，4： | 5 |
| 9 | Position tracking and attitude control for quadrotors via active disturbance rejection control method显示文摘In this paper, a trigonometric-saturation-function-based position controller is designed for the quadrotor system with internal and external disturbances. Furthermore, in the attitude control problem, a dual closed-loop structure is put forward. Specifically, a nonlinear extended-state-observer(ESO) is employed to provide an estimate for the so-called total disturbance. Then, based on the estimate provided by the ESO,a nonlinear composite control strategy is designed for the purpose of angular tracking. Some sufficient conditions are established to guarantee that the position and attitude subsystems are stable. The contributions are mainly as follows.(1) A trigonometric-saturation-function is used in the position control which could guarantee that the studied system is fully-actuated.(2) The nonlinear ESO is implemented in the attitude control-loop which could enhance the anti-disturbance property. Finally, some numerical simulations and practical experiments are provided to verify the applicability of the proposed methodology. | Yuan YUAN Lei CHENG Zidong WANG Chong SUN | 2019 | Science China(Information Sciences)2019，62，1： | 5 |
| 10 | Consensus control of stochastic multi-agent systems: a survey显示文摘In this article, we provide a review of the consensus control problem for stochastic multi-agent systems(MASs). Recent advances are surveyed according to the method of occurrence of the stochasticity of the MASs. First, the consensus problem is discussed for MASs, wherein individual agents are corrupted by random noises, i.e., the dynamics of agents involve stochasticity in process and/or measurement equations. Both additive noises and multiplicative noises are surveyed in detail and special attention is paid to the MASs whose dynamics are governed by It?o differential equations. Moreover, particular effort is devoted to presenting the latest progress on the consensus problem for a special type of stochastic MAS with Markovian jump parameters. Subsequently,the relevant research is summarized for MASs with noisy communication environments and stochastic sampling.Further, we provide a systematic review of the consensus problems for MASs whose communication topology varies randomly in the process of data propagation among agents. Finally, conclusions are drawn and several potential future research directions are outlined. | Lifeng MA Zidong WANG Qing-Long HAN Yurong LIU | 2017 | Science China(Information Sciences)2017，60，12： | 5 |
| 11 | WAYS OF STABILIZING CONTINUOUS UNIDIRECTIONAL SOLIDIFICATION PROCESS AND VERIFICATION TESTS显示文摘WAYSOFSTABILIZINGCONTINUOUSUNIDIRECTIONALSOLIDIFICATIONPROCESSANDVERIFICATIONTESTS①ChangGuowei,ZhangHu,WangZidong,WangJingson... | Chang Guowei, Zhang Hu, Wang Zidong, Wang Jingsong and Hu HanqiSchool of Materials Science and Engineering,University of Science and Technology Beijing, Beijing 100083, P. R. China | 1998 | 中国有色金属学会会刊:英文版1998，8，2： | 4 |
| 12 | An Overview of Recommendation Techniques and Their Applications in Healthcare显示文摘With the increasing amount of information on the internet,recommendation system(RS)has been utilized in a variety of fields as an efficient tool to overcome information overload.In recent years,the application of RS for health has become a growing research topic due to its tremendous advantages in providing appropriate recommendations and helping people make the right decisions relating to their health.This paper aims at presenting a comprehensive review of typical recommendation techniques and their applications in the field of healthcare.More concretely,an overview is provided on three famous recommendation techniques,namely,content-based,collaborative filtering(CF)-based,and hybrid methods.Next,we provide a snapshot of five application scenarios about health RS,which are dietary recommendation,lifestyle recommendation,training recommendation,decision-making for patients and physicians,and disease-related prediction.Finally,some key challenges are given with clear justifications to this new and booming field. | Wenbin Yue Zidong Wang Jieyu Zhang Xiaohui Liu | 2021 | IEEE/CAA Journal of Automatica Sinica2021，8，4： | 4 |
| 13 | Constructing graphene nanosheet-supported FeOOH nanodots for hydrogen storage of MgH2显示文摘Novel graphene-supported FeOOH nanodots(FeOOH NDs@G)were successfully prepared by a facile hydrothermal method and doped into MgH_(2)through mechanical ball-milling.MgH_(2)with 10wt%FeOOH NDs@G began to release hydrogen at 229.8℃,which is106.8℃ lower than that of pure MgH_(2).The MgH_(2)-10wt%FeOOH NDs@G composite could reversibly absorb 6.0wt%hydrogen at 200℃ under a 3.2 MPa hydrogen pressure within 60 min.With the addition of FeOOH NDs@G,the dehydrogenation and hydrogenation activation energy of MgH_(2)was decreased to 125.03 and 58.20 kJ·mol^(-1)(156.05 and 82.80 kJ·mol^(-1)for pure MgH_(2)),respectively.Furthermore,the hydrogen capacity of the FeOOH NDs@G composite retained 98.5%of the initial capacity after 20 cycles,showing good cyclic stability.The catalytic action of FeOOH NDs@G towards MgH_(2)could be attributed to the synergistic effect between graphene nanosheets and in-situ formed Fe,which prevented the aggregation of Mg/MgH2 particles and accelerated the hydrogen diffusion during cycling,thus enabling the Mg H_(2)-10wt%FeOOH NDs@G composite to exhibit excellent hydrogen storage performance. | Mengchen Song Liuting Zhang Jiaguang Zheng Zidong Yu Shengnan Wang | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，7： | 3 |
| 14 | Anti-disturbance filter design for a class of stochastic systems with fading channels显示文摘Dear editor,As a significant topic in control and signal processing communities,the filtering problem has been attracting persistent research attention in the past few decades[1].In practical engineering,the parameter perturbations are unavoidable due mainly to exogenous disturbances,environmental changes and some other phenomena. | Yang LIU Zidong WANG Hongli DONG Hongjian LIU | 2020 | Science China(Information Sciences)2020，63，11： | 3 |
| 15 | Set-Membership Filtering Subject to Impulsive Measurement Outliers:A Recursive Algorithm显示文摘This paper is concerned with the set-membership filtering problem for a class of linear time-varying systems with norm-bounded noises and impulsive measurement outliers.A new representation is proposed to model the measurement outlier by an impulsive signal whose minimum interval length(i.e.,the minimum duration between two adjacent impulsive signals)and minimum norm(i.e.,the minimum of the norms of all impulsive signals)are larger than certain thresholds that are adjustable according to engineering practice.In order to guarantee satisfactory filtering performance,a so-called parameter-dependent set-membership filter is put forward that is capable of generating a time-varying ellipsoidal region containing the true system state.First,a novel outlier detection strategy is developed,based on a dedicatedly constructed input-output model,to examine whether the received measurement is corrupted by an outlier.Then,through the outcome of the outlier detection,the gain matrix of the desired filter and the corresponding ellipsoidal region are calculated by solving two recursive difference equations.Furthermore,the ultimate boundedness issue on the time-varying ellipsoidal region is thoroughly investigated.Finally,a simulation example is provided to demonstrate the effectiveness of our proposed parameter-dependent set-membership filtering strategy. | Lei Zou Zidong Wang Hang Geng Xiaohui Liu | 2021 | IEEE/CAA Journal of Automatica Sinica2021，8，2： | 3 |
| 16 | Toward High Carrier Mobility and Low Contact Resistance:Laser Cleaning of PMMA Residues on Graphene Surfaces显示文摘Poly(methyl methacrylate)(PMMA) is widely used for graphene transfer and device fabrication.However,it inevitably leaves a thin layer of polymer residues after acetone rinsing and leads to dramatic degradation of device performance.How to eliminate contamination and restore clean surfaces of graphene is still highly demanded.In this paper,we present a reliable and position-controllable method to remove the polymer residues on graphene films by laser exposure.Under proper laser conditions,PMMA residues can be substantially reduced without introducing defects to the underlying graphene.Furthermore,by applying this laser cleaning technique to the channel and contacts of graphene fieldeffect transistors(GFETs),higher carrier mobility as well as lower contact resistance can be realized.This work opens a way for probing intrinsic properties of contaminant-free graphene and fabricating high-performance GFETs with both clean channel and intimate graphene/metal contact. | Yuehui Jia Xin Gong Pei Peng Zidong Wang Zhongzheng Tian Liming Ren Yunyi Fu Han Zhang | 2016 | Nano-Micro Letters2016，8，4： | 2 |
| 17 | REACTION MODEL IN Al-Ti-C SYSTEM显示文摘REACTIONMODELINAl-Ti-CSYSTEM￥WANGZidong;HUHanqi(UniversityofScienceandTechnologyBeijing.Beijing,China)LiQingchun(Harbininstit... | WANG Zidong HU Hanqi(University of Science and Technology Beijing.Beijing,China)Li Qingchun(Harbin institute of Technology,Harbin.China | 1995 | Acta Metallurgica Sinica(English Letters)1995，8，2： | 2 |
| 18 | Stability analysis and observer design for neutral delay systems 显示文摘 | Wang Zidong Lam J Burnham K J | 2002 | IEEE Tran Automat Contr2002，47，3： | 2 |
| 19 | Robust control for a class of nonlinear networked systems with stochastic communication delays via sliding mode conception显示文摘This paper deals with the robust control problem for a class of uncertain nonlinear networked systems with stochastic communication delays via sliding mode conception(SMC).A sequence of variables obeying Bernoulli distribution are employed to model the randomly occurring communication delays which could be different for different state variables.A discrete switching function that is different from those in the existing literature is first proposed.Then,expressed as the feasibility of a linear matrix inequality(LMI)with an equality constraint,sufficient conditions are derived in order to ensure the globally mean-square asymptotic stability of the system dynamics on the sliding surface.A discretetime SMC controller is then synthesized to guarantee the discrete-time sliding mode reaching condition with the specified sliding surface.Finally,a simulation example is given to show the effectiveness of the proposed method. | Lifeng MA Zidong WANG Xuemin CHEN Zhi GUO | 2010 | 控制理论与应用(英文版)2010，8，1： | 2 |
| 20 | Anion Exchange Membrane Based on Interpenetrating Polymer Network with Ultrahigh Ion Conductivity and Excellent Stability for Alkaline Fuel Cell显示文摘A high-performance anion exchange membrane(AEM)is critical for the development of alkaline fuel cell.In this work,AEMs with an interpenetrating polymer network(IPN)are synthesized.An electron microscope clearly reveals a highly efficient“ion channel”network,which is constructed with a small amount of cation exchange groups.This specially designed ion channel leads to extraordinary hydroxide conductivity(e.g.,257.8 mS cm^(-1) at 80℃)of IPN AEMs at moderate ion exchange capacity(IEC=1:75 mmol g^(-1)),as well as excellent long-term alkaline stability at harsh condition which showed that 81%of original conductivity can be retained after a long time for 1248 hours.Moreover,a remarkable peak power density of 1.20 Wcm^(-2)(0.1 MPa backpressure)with nonprecious metal(FeNx-CNTs)as oxygen reduction reaction(ORR)catalyst in a fuel cell test was achieved.This work offers a general strategy to prepare high-performance AEMs based on IPN structure design. | Lingping Zeng Qian He Yunchuan Liao Shangyi Kuang Jianchuan Wang Wei Ding Qiang Liao Zidong Wei | 2020 | Research2020，，1： | 2 |
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