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$H_{\infty}$ Antidisturbance Event-Triggered control for Aeroengine Systems via Switched Affine Models

IEEE Transactions on Aerospace and Electronic Systems 2024年第2期61卷 1600-1609页

作者： Ying Zhao Xinyu Ni Sixin Wen Ben Niu College of Marine Electrical Engineering Dalian Maritime University Dalian China Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education School of Control Science and Engineering Dalian University of Technology Dalian China

This study is focused on the issue of $H_{\infty }$ antidisturbance event-triggered (ADET) control for aeroengine control systems (AECS) under multiple disturbances. First, a switched affine model is employed to describe the AECS, taking into account the degradation of aeroengine performance and the phenomenon of multimode operation. Second, a disturbance observer is established to compensate for disturbances that arise from the modeling error, uncertainties, and other factors. Then, based on the disturbance observer, a dynamic event-triggered mechanism with respect to the affine term and an $H_{\infty }$ ADET controller are built to optimize network transmission resources and fuel flow efficiency. Furthermore, a sufficient condition is developed to enable the solvability of the $H_{\infty }$ ADET control issue for AECSs. Finally, a simulation platform of hardware-in-the-loop for the AECS based on switched affine model is implemented to illustrate the effectiveness of the present $H_{\infty }$ ADET control methodology.

关键词： Switches control systems Engines Aircraft propulsion Degradation Switched systems Fuels

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Foliar-applied zinc promotes cadmium allocation from leaf surfaces to grains in rice

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Journal of Environmental sciences 2025年第5期151卷 582-593页

作者： Ya-Ting Liu Bo-Fang Yan Xuan Cai Hong-Xiang Zheng Rong-Liang Qiu Ye-Tao Tang School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510006China Institute of Facility Agriculture Guangdong Academy of Agricultural SciencesGuangzhou 510640China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental Safety College of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China

The accumulation of Cd by rice poses significant health *** fertilizationwith Zn can reduce grain Cd contents in rice grown in Cd-contaminated ***,atmospheric deposition on leaves is another vector of Cd contamination,and it remains unclear how Zn application affects the allocation of such *** conducted an experiment where the flag leaves of rice plants were treated with solutions with various Zn concentrations and a constant Cd *** 111Cd stable isotope was used to trace the flux of foliarapplied *** levels of foliar-applied Zn enhanced Cd efflux and grain *** is attributed to limited sequestration of foliar-applied Cd in the leaf cell symplasm and increased Cd desorption from leaf cell walls when a high Zn^(2+)concentration occurs in the *** Zn oxide nanoparticlesmitigated these ***,the expressions of OsLCT1 and OsZIP7 in flag leaves and OsHMA2 and OsZIP7 in the uppermost nodes were upregulated under high-Zn^(2+)treatment,which may facilitate Cd phloem loading and grain *** is advised in using foliar Zn in areas with high atmospheric Cd due to potential grain-contamination risks.

关键词： Atmospheric deposition Isotope labelling Metal interaction Phloem Cell wall

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Dynamics and diversity of microbial community in salmon slices during refrigerated storage and identification of biogenic amine-producing bacteria

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Food Bioscience 2023年第2期52卷 740-748页

作者： Yingchang Li Nan Zhao Yuanyuan Li Defu Zhang Tong Sun Jianrong Li College of Food Science and Technology Food Safety Key Laboratory of Liaoning ProvinceNational&Local Joint Engineering Research Center for StorageProcessing and Safety Control Technology for Fresh Agricultural and Aquatic ProductsBohai UniversityJinzhou121013LiaoningChina

The changes in microbial composition of salmon slices during storage at 4◦C were measured using high-throughput sequencing(HTS),and biogenic amine(BA)-producing bacteria were isolated from salmon slices to evaluate their ability to produce *** salmon slices had the highest bacterial diversity,which decreased with the extension of the refrigerated storage *** was the dominating genus in fresh salmon slices,followed by Photobacterium and Burkholderia,while Brochothrix became the dominant bacterium in the later stages of the storage *** strains of BA-producing bacteria were isolated and determined,which varied greatly in BA *** these,Brochothrix thermosphacta(B5)exhibited the strongest BA-producing ability,producing 98.32 mg/mL of putrescine and 78.81 mg/mL of cadaverine,and Photobacterium phosphoreum showed a stronger histamine-producing ability(77.07 mg/mL).This study explored the microbial composition in salmon slices and offer insight into the relationship between microorganisms and BAs in salmon *** study provides a theoretical basis for developing antibacterial agents,decreasing the amount BAs,and extending the shelf-life of salmon slices.

关键词： High-throughput sequencing Microbial community Biogenic amine-producing bacteria Biogenic amines Salmon slices

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Rapid Fabrication of Electrodes for Symmetrical Solid Oxide Cells by Extreme Heat Treatment

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Energy & Environmental Materials 2024年第5期7卷 349-356页

作者： Weiwei Fan Zhu Sun Manxi Wang Manxian Li Yuming Chen Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China Department of Nuclear Science and Engineering Massachusetts Institute of TechnologyCambridgeMassachusetts 02139USA School of Materials Science and Engineering Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China Zhangjiang Institute for Advanced Study(ZIAS) Shanghai Jiao Tong UniversityShanghai 201210China College of Environmental Science and Engineering and College of Physics and Energy Fujian Normal UniversityFuzhou 350000China

Symmetrical solid oxide cells(SSOCs)are very useful for energy generation and *** fabricate the electrode of SSOC,it is very time-consuming to use the conventional *** this work,we design and develop a novel method,extreme heat treatment(EHT),to rapidly fabricate electrodes for *** show that by using the EHT method,the electrode can be fabricated in seconds(the fastest method to date),benefiting from enhanced reaction *** EHT-fabricated electrode presents a porous structure and good adhesion with the *** contrast,tens of hours are needed to prepare the electrode by the conventional approach,and the prepared electrode exhibits a dense structure with a larger particle size due to the lengthy *** EHT-fabricated electrode shows desirable electrochemical ***,we show that the electrocatalytic activity of the perovskite electrode can be tuned by the vigorous approach of fast exsolution,deriving from the increased active sites for enhancing the electrochemical *** 900℃,a promising peak power density of 966 mW cm^(-2)is *** work exploits a new territory to fabricate and develop advanced electrodes for SSOCs in a rapid and high-throughput manner.

关键词： electrochemical performance extreme heat treatment perovskite electrode symmetrical solid oxide cells

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Machine learning accelerated DFT research on platinum-modified amorphous alloy surface catalysts

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Chinese Chemical Letters 2023年第5期34卷 645-649页

作者： Xi Zhang Kangpu Li Bo Wen Jiang Ma Dongfeng Diao Institute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/NanoShenzhen UniversityShenzhen 518060China College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060China Research Center of Medical Plasma Technology Shenzhen UniversityShenzhen 518060China

Pt-modified amorphous alloy(Pt@PdNiCuP)catalyst exhibits excellent electro-catalytic activity and high experimental durability for hydrogen evolution reaction(HER).However,the physical origin of the catalytically active remains *** this paper,we constructed a distance contribution descriptor(DCD)for the feature engineering of machine learning(ML)potential,and calculated the Gibbs free energies(ΔGH)of 46,000*H binding sites on the Pt@Pd Ni Cu P surface by ML-accelerated density functional theory(DFT).The relationship betweenΔGHand DCD revealed that in the H-Pt distance region of 2.0-2.5 A where the parabolic tail and disordered scatters coexist,the H-metal bonding configuration is mainly the bridge-or hollow-bonding *** contribution analysis of DCD indicates that the joint effect of Pt,Pd and Ni atoms determines the catalytical behavior of amorphous alloy,which agrees well with experimental *** counting atomic percentages in different energy intervals,we obtained the atomic ratio for the best catalytic performance(Pt:Pd:Ni:Cu:P=0.33:0.17:0.155:0.16:0.185).Projected density of states(PDOS)show that H 1s orbital,Pt 5d orbital,and Pd 4d orbital form a bonding state at-2 e *** results provide new ideas for designing more active amorphous alloy catalysts.

关键词： Hydrogen evolution reaction Amorphous alloy Density functional theory Machine learning

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Detection method of river industrial pollution events based on background model prediction using three-dimensional fluorescence

Detection method of river industrial pollution events based ...

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第34届中国过程控制会议

作者： Qiuhao Zhang Jie Yu Jiegen Shi Fangjia Xue Pingjie Huang Dibo Hou Hongjian Zhang Key Laboratory of Industrial Control Technology Department of Control Science and EngineeringZhejiang University

The use of three-dimensional fluorescence spectroscopy for anomaly detection of urban river water quality can protect the water environment from exogenous pollution especially organic pollutant,and has great potential for ***,the detection methods face challenges from scenarios of pollution in low concentration,similar spectral distinguish,fluctuation in water background,*** paper proposed a detection method based on water background model prediction feature extraction method which is suitable for the above ***,a spectroscopy preprocessing method for anomaly detection in river scenes is applied to delete the scattering ***,alternating residual trilinearization is used to establish a river water spectroscopy model to predict the trend of water quality *** the frequency domain features of potential fluorescence peaks are extracted from the residual spectrum for classification to identify abnormal organic *** results show that the method proposed in this paper can effectively extract the fluorescence characteristics of pollutants in low concentration pollutant scene,overlapping pollutant fluorescence peaks with background fluorescence peaks scene and river water background fluctuation scene,thus achieving accurate anomaly detection results.

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Porphyrin-based Covalent Organic Polymers with Bimetallic Active Sites for Boosting Photocatalytic CO_(2) Cycloaddition

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Chemical Research in Chinese Universities 2025年第1期41卷 121-130页

作者： YAN Shengrong ZHANG Lan SHI Songhu REN Yanyan LIU Wenhao LI Yujie DUAN Fang LU Shuanglong DU Mingliang CHEN Mingqing Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi214122P.R.China School of Environmental and Biological Engineering Nantong College of Science and TechnologyNantong226007P.R.China Jiangsu Engineering Research Center of Environmental Functional Materials and Pollution Control Nantong226007P.R.China

The photocatalytic CO_(2) cycloaddition to prepare high value-added chemicals,such as cyclic carbonates(CCs)under mild conditions is an effective strategy to realize carbon ***,through a three-step reaction,the porphyrin-based covalent organic polymer with bimetallic active sites(Fe-COP-Zr)is successfully obtained by coordinating Fe^(2+) and Zr^(4+)with porphyrin and bipyridine(Bpy),*** to excellent photosensitivity of porphyrin moieties,Fe-COP-Zr exhibits outstanding visible light absorption,which is very important for the production of photogenerated ***,Fe-COP-Zr shows high photocatalytic performance towards CO_(2) cycloaddition with a yield of 12.1 mmol/h,which is 6 times higher than that of pure covalent organic polymer(COP)and 3 times higher than that of monometallic *** reason for this excellent photocatalytic CO_(2) cycloaddition performance may be ascribed to the synergistic effect of Fe and Zr *** photogenerated electrons are easily injected into epichlorohydrin(ECH)through Fe—O bonds to form affluent electron transition state,and interact with Zr^(4+) as Lewis acid sites for the ring-opening of ECH,which is the rate-determining step for the visible light boosted chemical fixation of CO_(2) into *** work might provide some insights for design and preparation of COPs with multiple active sites to modulate their photocatalytic activities.

关键词： Photocatalytic CO_(2)cycloaddition Cyclic carbonate Covalent organic polymer Bimetallic active site

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P-tuned FeN_(2)binuclear sites for boosted CO_(2)electro-reduction

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Journal of Energy Chemistry 2025年第2期101卷 816-824,I0018页

作者： Cao Guo Sanshuang Gao Jun Li Menglin Zhou Abdukader Abdukayum Qingquan Kong Yingtang Zhou Guangzhi Hu School of Materials and Energy Institute for Ecological Research and Pollution Control of Plateau LakesSchool of Ecology and Environmental ScienceYunnan UniversityKunming 650504YunnanChina Xinjiang Key Laboratory of Novel Functional Materials Chemistry College of Chemistry and Environmental SciencesKashi UniversityKashi 844000XinjiangChina School of Mechanical Engineering Chengdu UniversityChengdu 610106SichuanChina National Engineering Research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004ZhejiangChina

The recycling of CO_(2)through electrochemical processes offers a promising solution for alleviating the greenhouse effect;however,the activation of CO_(2)and desorption of^(*)CO in electrocatalytic CO_(2)reduction(ECR)frequently encounter high energy barriers and competitive hydrogen evolution reactions(HERs),which are urgent problems that need to be *** this study,a catalyst(P100-Fe-N/C)with homogeneous P-tuned FeN_(2)binuclear sites(N_(2)PFe-FePN_(2))was successfully synthesised,demonstrating satisfactory performance in the ECR to CO.P100-Fe-N/C attains a peak FECOof 98.01%and a normalized TOF of 664.7 h-1at-0.7 VRHE,surpassing the performance of the Fe binuclear catalyst without P and singleatoms *** the MEA cell,a FECOexceeding 90%can still be *** functional theory analysis indicates that the asymmetric coordination configuration induced by the incorporation of P facilitates a reduction in the system's *** modulation of P results in the d-band centre of the catalyst being positioned closer to the Fermi level,which facilitates the interaction of the catalyst with CO_(2),allowing more electrons to be injected into the CO_(2)molecule at the Fe binuclear sites and inhibiting the *** P-tuned FeN_(2)binuclear sites effectively lower the^(*)CO desorption barrier.

关键词： Electrocatalysis Diatomic catalyst Heteroatom doping CO_(2)reduction reaction DFT calculation

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Comparative genomics of widespread and narrow-range white-bellied rats in the Niviventer niviventer species complex sheds light on invasive rodent success

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Zoological Research 2023年第6期44卷 1052-1063页

作者： Xin-Lai Wu Dan-Ping Mu Qi-Sen Yang Yu Zhang Yu-Chun Li Anderson Feijó Ji-Long Cheng Zhi-Xin Wen Liang Lu Lin Xia Zhi-Jun Zhou Yan-Hua Qu De-Yan Ge Key Laboratory of Zoological Systematics and Application of Hebei Province College of Life SciencesHebei UniversityBaodingHebei 071002China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeichen West RoadChaoyang DistrictBeijing 100101China Xinjiang Key Laboratory of Biological Resources and Genetic Engineering College of Life Science and TechnologyXinjiang UniversityUrumqiXinjiang 830046China Marine College Shandong UniversityWeihaiShandong 264209China State Key Laboratory for Infectious Diseases Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Hebei Basic Science Center for Biotic Interaction Institute of Life Science and Green DevelopmentHebei UniversityBaodingHebei 071002China

Widespread species that inhabit diverse environments possess large population sizes and exhibit a high capacity for environmental adaptation,thus enabling range *** contrast,narrow-range species are confined to restricted geographical areas and are ecologically adapted to narrow environmental conditions,thus limiting their ability to expand into novel ***,the genomic mechanisms underlying the differentiation between closely related species with varying distribution ranges remain poorly *** Niviventer niviventer species complex(NNSC),consisting of highly abundant wild rats in Southeast Asia and China,offers an excellent opportunity to investigate these questions due to the presence of both widespread and narrow-range species that are phylogenetically closely *** the present study,we combined ecological niche modeling with phylogenetic analysis,which suggested that sister species cannot be both widespread and dominant within the same geographical ***,by assessing heterozygosity,linkage disequilibrium decay,and Tajima's D analysis,we found that widespread species exhibited higher genetic diversity than narrow-range *** addition,by exploring the“genomic islands of speciation”,we identified 13 genes in highly divergent regions that were shared by the two widespread species,distinguishing them from their narrow-range *** annotation analysis indicated that these genes are involved in nervous system development and *** adaptive evolution of these genes likely played an important role in the speciation of these widespread species.

关键词： Niviventer niviventer species complex Widespread species Narrow-range species Speciation Genomic islands of differentiation Phylogenomics

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Physics and data-driven approach for online joint state and parameter estimation of electricity and steam networks

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Energy Internet 2024年第2期1卷 166-175页

作者： Jun Zhao Wange Li Tianyu Wang Wei Wang The Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education Dalian University of TechnologyDalianChina The School of Control Science and Engineering Dalian University of TechnologyDalianChina

The electricity and steam integrated energy systems,which can capture waste heat and improve the overall energy efficiency,have been widely utilised in industrial ***,intensive and frequent changes in demands would lead to model parameters with strong time-varying *** paper proposes a hybrid physics and data-driven framework for online joint state and parameter estimation of steam and electricity integrated energy *** on the physical non-linear state space models for the electricity network(EN)and steam heating network(SHN),relevance vector machine is developed to learn parameters'dynamic characteristics with respect to model states,which is embedded with physical ***,the online joint state and parameter estimation based on unscented Kalman filter is proposed,which would be learnt recursively to capture the spatiotemporal transient characteristics between electricity and *** IEEE 39-bus EN and the 29-nodes SHN are employed to verify the effectiveness of the proposed *** experimental results validate that the pro-posed method can provide a higher estimation accuracy than the state-of-the-art approaches.

关键词： dynamic state estimation integrated electricity and steam networks parameter estimation physics and data-driven method

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