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Hybrid intelligent PID control design for PEMFC anode system

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第4期9卷 552-557页

作者： rui-min wang Ying-ying ZHANG Guang-yi CAO Fuel Cell Institute Department of Automation Shanghai Jiao Tong University Shanghai 200030 China Institute of Oceanographic Instrument Shandong Academy of Science Qingdao 266001 China

Control design is important for proton exchange membrane fuel cell (PEMFC) generator. This work researched the anode system of a 60-kW PEMFC generator. Both anode pressure and humidity must be maintained at ideal levels during steady operation. In view of characteristics and requirements of the system, a hybrid intelligent PID controller is designed specifically based on dynamic simulation. A single neuron PI controller is used for anode humidity by adjusting the water injection to the hydrogen cell. Another incremental PID controller, based on the diagonal recurrent neural network (DRNN) dynamic identification, is used to control anode pressure to be more stable and exact by adjusting the hydrogen flow rate. This control strategy can avoid the coupling problem of the PEMFC and achieve a more adaptive ability. Simulation results showed that the control strategy can maintain both anode humidity and pressure at ideal levels regardless of variable load, nonlinear dynamic and coupling characteristics of the system. This work will give some guides for further control design and applications of the total PEMFC generator.

关键词： Proton exchange membrane fuel cell (PEMFC) Anode system Single neuron Diagonal recurrent neural network (DRNN) PID controller

Two schemes of multiparty quantum direct secret sharing via a six-particle GHZ state

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Communications in Theoretical Physics 2020年第2期72卷 38-45页

作者： Xin-Wei Zha Ruo-Xu Jiang min-rui wang School of Science Xi’an University of Posts and TelecommunicationsXi’an710121China

In this paper,two new efficient multiparty quantum direct secret sharing schemes are proposed via a six-particle GHZ state and Bell *** the first scheme,based on the theory of security cryptanalysis,the secret message of the sender is directly encoded into the transmitted particles,and all the agents can obtain their information by performing bell measurement on the received particles,and then cooperate to recover the information of the *** the second scheme,we define a new secret shared coding method by performing local unitary operations on the transmitted particles,then agents perform Bell measurements on their own particles respectively,and feedback the measurement to the *** the agent’s results are matched with the previous coding method,the protocol will work *** addition,the proposed two schemes have the following common advantages:the sender can send all prepared particles to the receiver,and can send an arbitrary key to the receiver,rather than a random secret key;the proposed schemes do not need to insert any detection sets to detect eavesdropping and can resist both existing attacks and spoofing attacks by dishonest *** sender need not to retain any photons,so the sender’s quantum memory could be omitted here.

关键词： quantum direct secret sharing Bell measurement security cryptanalysis local unitary operation

Constructing a Maximally Entangled Seven-Qubit State via Orthogonal Arrays

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Chinese Physics Letters 2020年第9期37卷 6-9页

作者： Xin-Wei Zha min-rui wang Ruo-Xu Jiang School of Science Xi'an University of Posts and TelecommunicationsXi'an 710121China

Huber et al.[***.118(2017)200502]have proved that a seven-qubit state whose three-body marginal states are all maximally mixed does not ***,we propose a method to build a maximally entangled state based on orthogonal arrays to construct maximally entangled seven-qubit *** this method,we not only determine that a seven-qubit state whose three-body marginals are all maximally mixed does not exist,but also find the condition for maximally entangled seven-qubit *** consider thatπME=19/140 is a condition for maximally entangled seven-qubit ***,we derive three forms of maximally entangled seven-qubit states via orthogonal arrays.

关键词： states. maximal states

Efficient scheme for remote preparation of arbitrary n-qubit equatorial states

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Chinese Physics B 2020年第4期29卷 160-164页

作者： Xin-Wei Zha min-rui wang Ruo-Xu Jiang School of Science Xi'an University of Posts and TelecommunicationsXi'an 710121China

Recently,a scheme for deterministic remote preparation of arbitrary multi-qubit equatorial states was proposed by Wei et al.[Quantum ***.1770(2018)].It is worth mentioning that the construction of mutual orthogonal measurement basis plays a key role in quantum remote state *** this paper,a simple and feasible remote preparation of arbitrary n-qubit equatorial states scheme is *** our scheme,the success probability will reach ***,there are no coefficient constraint and auxiliary qubits in this *** means that the success probabilities are independent of the coefficients of the entangled *** advantage of our scheme is that the mutual orthogonal measurement basis is *** accomplish the quantum remote state preparation(RSP)schemes,some new sets of mutually orthogonal measurement basis are introduced.

关键词： mutual orthogonal measurement basis remote state preparation equatorial states success probability

Development and Validation of a Simoa Assay for Determination of Recombinant Batroxobin in Human Serum

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Current Medical Science 2021年第3期41卷 618-625页

作者： Bian-zhen wang Meng-jia wang min-rui wang Lun OU Li-hou DONG Kelly DONG Hai-feng SONG State Key Laboratory of Proteomics Beijing Proteome Research CenterNational Center of Protein Sciences(Beijing)Beijing Institute of LifeomicsBeijing 102206China United-Power Pharma Tech Co LtdBeijing J02206China

Recombinant batroxobin(S3101)is a thrombin-like serine protease that binds to fibrinogen or is taken up by the reticuloendothelial system.A literature survey showed no adequate method that could determine sufficient concentrations to evaluate pharmacokinetic parameters for phase I clinical ***,a sensitive method is urgently needed to support the clinical pharmacokinetic evaluation of *** this study,a sensitive bioanalytical method was developed and validated,using a Quanterix single molecular array(Simoa)***,to thoroughly assess the platform,enzyme-linked immunosorbent assay and electrochemiluminescence assay were also developed,and their performance was compared with that of this novel technology *** assay was validated in compliance with the current *** with the Simoa assay were precise and accurate,presenting a valid assay range from 6.55 to 4000 pg/*** intra-and inter-run accuracy and precision were within-19.3%to 15.3%and 5.5%to 17.0%,respectively.S3101 was stable in human serum for 280 days at-20℃and-70℃,for 2 h prior to pre-treatment and 24 h post pre-treatment at room temperature(22℃-28℃),respectively,and after five and two freeze-thaw cycles at-70℃and-20oC,*** Simoa assay also demonstrated sufficient dilution linearity,assay sensitivity,and parallelism for quantifying S3101 in human *** Simoa assay is a sensitive and adequate method for evaluating the pharmacokinetic parameters of S3101 in human serum.

关键词： enzyme-linked immunosorbent assay electrochemiluminescence assay quanterix single molecular array recombinant batroxobin ligand-binding assay

Nonlocal coherence harvesting from quantum vacuum

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Communications in Theoretical Physics 2024年第7期76卷 44-51页

作者： rui-Di wang Shu-min Wu Xiao-Li Huang Department of Physics Liaoning Normal UniversityDalian 116029China

It is well known that nonlocal coherence reflects nonclassical correlations better than quantum entanglement. Here, we analyze nonlocal coherence harvesting from the quantum vacuum to particle detectors adiabatically interacting with a quantum scalar field in minkowski *** find that the harvesting-achievable separation range of nonlocal coherence is larger than that of quantum entanglement. As the energy gap grows sufficiently large, the detectors harvest less quantum coherence, while the detectors could extract more quantum entanglement from the vacuum state. Compared with the linear configuration and the scalene configuration, we should choose the model of equilateral triangle configuration to harvest tripartite coherence from the vacuum. Finally, we find a monogamous relationship, which means that tripartite l_(1)-norm of coherence is essentially bipartite types.

关键词： nonlocal coherence quantum vacuum monogamous relationship

Effect of temperature and time on the precipitation ofκ-carbides in Fe-28Mn-10Al-0.8C low-density steels:Aging mechanism and its impact on material properties

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International Journal of minerals,Metallurgy and Materials 2024年第10期31卷 2189-2198页

作者： Yulin Gao min Zhang rui wang Xinxin Zhang Zhunli Tan Xiaoyu Chong School of Mechanical Electronic and Control EngineeringMaterials Science and Engineering Research CenterBeijing Jiaotong UniversityBeijing 100044China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

In low-density steel,κ-carbides primarily precipitate in the form of nanoscale particles within austenite ***,their precipitation within ferrite matrix grains has not been comprehensively explored,and the second-phase evolution mechanism during aging remains *** this study,the crystallographic characteristics and morphological evolution ofκ-carbides in Fe-28Mn-10Al-0.8C(wt%)low-density steel at different aging temperatures and times and the impacts of these changes on the steels’microhardness and properties were comprehensively *** different heat treatment conditions,intragranularκ-carbides exhibited various morpho-logical and crystallographic characteristics,such as acicular,spherical,and short rod-like *** the initial stage of aging,acicularκ-carbides primarily precipitated,accompanied by a few spherical carbides.κ-Carbides grew and coarsened with aging time,the spherical carbides were considerably reduced,and rod-like carbides *** hardness testing demonstrated that the material’s hardness was affected by the volume fraction,morphology,and size ofκ-*** aging at higher temperatures led to an increase in carbide size and volume fraction,resulting in a gradual rise in *** deformation,the primary mechanisms for strengthening were dislocation strengthening and second-phase *** on these findings,potential strategies for improving material strength are proposed.

关键词： low-density steel κ-carbide solution-aging treatment hardness

Modified constitutive models for Inconel 718 considering current density and temperature in electrically assisted forming process

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Chinese Journal of Aeronautics 2024年第2期37卷 524-540页

作者： Xuan CUI rui ZHAO min WAN School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Jiangxi Research Institute of Beihang University Jiangxi 330000China

Electrically Assisted Forming(EAF)technology has obvious advantages in material *** develop an effective constitutive model considering electrical effects,room temperature and electrically assisted quasi-static uniaxial tensile tests were conducted using ultrathin nickelbased superalloy plates with a thickness of 0.25 *** research focused on the two most widely recognized effects:the Joule thermal and the electric athermal *** mechanism of current action can be divided into two scenarios:one considering the Joule thermal effect only,and the other considering both effects *** basic constitutive models,namely the Modified-Hollomon model and the Johnson-Cook(J-C)model,were selected to be optimized through the classification of two different situations,and four optimized constitutive models were *** was found that the J-C model with simultaneous consideration of the Joule thermal effect and electric athermal effect had the best prediction effect by comparing the results of these four ***,the accuracy of the optimization model was verified by finite element simulation of the electrically assisted stretching optimization *** results show that the constitutive model can effectively predict the temperature effect caused by the Joule heat effect and the athermal effect of current on the material.

关键词： Joule heating Elastoplasticity Plastic deformation Superalloys Constitutive models

Advances in bio-inspired electrocatalysts for clean energy future

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Nano Research 2024年第2期17卷 515-533页

作者： Jing-Wen Duan Mu min-rui Gao Division of Nanomaterials&Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleDepartment of ChemistryUniversity of Science and Technology of ChinaHefei 230026China

Electrocatalysis can enable efficient energy storage and conversion and thus is an effective way to achieve carbon *** unique structure and function of organisms can offer many ideas for the design of electrocatalysts,which has become one of the most promising research ***,the understanding of the mechanism of bio-inspired electrocatalysis has become clearer,which has promoted the design of bio-inspired catalysts and catalytic *** bio-inspired catalysts(enzyme-like catalysts,layered porous catalysts,superhydrophobic/superhydrophilic surfaces,and so on)have been developed to enable efficient electrocatalytic ***,we discuss the key advances in the field of bio-inspired electrocatalysts progressed in recent ***,the role of bio-inspiration in increasing the intrinsic activity and number of active sites of catalysts is ***,the structure and mechanism of layered porous catalytic systems that mimic biological transport systems are comprehensively ***,the design of three-phase interfaces from micro-nanoscale to atomic scale is highlighted,including the wettability of the electrode surface and the transport system near the *** conclude the review by identifying challenges in bio-inspired electrocatalysts and providing insights into future prospects for the exciting research field.

关键词： bio-inspired electrocatalysts active sites layered porous structure three-phase interface