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Adaptive Consensus Quantized Control for a Class of High-Order Nonlinear Multi-Agent Systems With Input Hysteresis and Full State Constraints

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IEEE/CAA Journal of Automatica Sinica 2022年第9期9卷 1574-1589页

作者： guoqiang zhu Haoqi Li Xiuyu Zhang Chenliang Wang Chun-Yi Su Jiangping Hu the School of Automation Engineering Northeast Electric Power UniversityJilin 132012 the Jilin Province International Research Center of Precision Drive and Intelligent Control Jilin 132012China the School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China the Department of Mechanical and Industrial Engineering Concordia UniversityQCMontrealH3B 1R6Canada the School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China(

For a class of high-order nonlinear multi-agent systems with input hysteresis,an adaptive consensus output-feedback quantized control scheme with full state constraints is *** major properties of the proposed control scheme are:1)According to the different hysteresis input characteristics of each agent in the multi-agent system,a hysteresis quantization inverse compensator is designed to eliminate the influence of hysteresis characteristics on the system while ensuring that the quantized signal maintains the desired value.2)A barrier Lyapunov function is introduced for the first time in the hysteretic multi-agent *** constructing state constraint control strategy for the hysteretic multi-agent system,it ensures that all the states of the system are always maintained within a predetermined range.3)The designed adaptive consensus output-feedback quantization control scheme allows the hysteretic system to have unknown parameters and unknown disturbance,and ensures that the input signal transmitted between agents is the quantization value,and the introduced quantizer is implemented under the condition that only its sector bound property is *** stability analysis has proved that all signals of the closed-loop are semi-globally uniformly *** Star Sim hardware-in-the-loop simulation certificates the effectiveness of the proposed adaptive quantized control scheme.

关键词： Adaptive quantized control barrier Lyapunov function input hysteresis multi-agent systems

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Mechanical Behaviors of Anchorage Interfaces in Layered Rocks with Fractures under Axial Loads

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Journal of Earth Science 2023年第2期34卷 354-368页

作者： Yan Wang Changdong Li Zhilan Cai guoqiang zhu Jiaqing Zhou Wenmin Yao Faculty of Engineering China University of GeosciencesWuhan 430074China Badong National Observation and Research Station of Geohazards China University of GeosciencesWuhan 430074China School of Civil Engineering Zhengzhou UniversityZhengzhou 450001China

Rock bolts are widely employed as an effective and efficient reinforcement method in geotechnical *** composite structures formed by hard rock and weak rock are often encountered in practical ***,the spatial structure of the rock mass has a direct influence on the effect of the anchorage *** investigate the impact of rock mass structure on the mechanical characteristics of anchorage interfaces,pull-out tests on reinforced specimens with different mudstone thicknesses and fracture dip angles are *** experimental results indicate that the percentage of mudstone content and fracture dip angle have a significant influence on the pullout load of the samples.A weaker surrounding rock results in a lower peak load and a longer critical anchorage length,and vice *** results also show that 70%mudstone content can be considered a critical condition for impacting the peak ***,the percentage of mudstone content has a limited influence on the variation in the peak load when it exceeds 70%.Optical fiber deformation results show that compared to the rock mass with fracture dip angles of 0°and 60°,the rock mass with a fracture dip angle of 30°has a more uniformly distributed force at the anchorage *** the fracture dip angle exceeds 60°,the dip angle is no longer a key indicator of peak *** accuracy of the experimentally obtained load-displacement curves is further verified although numerical simulation using the discrete element method.

关键词： layered rocks grouted rockbolts grout/rock interface distributed optical fiber mechanical behavior

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Simulation Study of SVM-Based Approach in Extracting Parameters for Electromagnetic Detection of Buried Object

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Wuhan University Journal of Natural Sciences 2010年第6期15卷 510-515页

作者： ZHANG Qinghe HE Siyuan zhu guoqiang School of Science China Three Gorges University Yichang443002 Hubei China School of Electronic Information Wuhan UniversityWuhan 430072 Hubei China

In this paper,a new method for extracting the parameters of buried object is *** center position and dielectric properties of 2-D buried object are estimated by means of a regression technique based on support vector machine（SVM）.The proposed method,after a proper training procedure,is able to reconstruct the center position and dielectric properties of a buried object inside a given investigation *** simulation results indicate that SVM-based approach shows higher accuracy than the back-propagation neural networks（BPNN） algorithm.

关键词： buried object detection inverse scattering support vector machine(SVM)

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A Decorrelation Constant Modulus Algorithm for Multitarget Separation Using Adaptive Arrays

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Wuhan University Journal of Natural Sciences 2007年第6期12卷 1063-1065页

作者： XU Jin zhu guoqiang YUAN Fei School of Electronic Information Wuhan University Wuhan 430072 Hubei China

In this paper, an adaptive digital filter algorithm is presented to optimize the signal-to-noise ratio of an antenna array with multiuser signal inputs. These synchronous communication signals have constant envelope property and are transmitted through a Multiple-Input/Multiple-Output （MIMO） linear channel. This Multiuser Constant Modulus Algorithm （MU-CMA） using an antenna array can compensate for both Interuser Interference （IUI） and Intersymbol Interference （ISI）. The method is derived by minimizing the cost function of the constant modulus signals as well as cross-correlations between them. The simulation result in this paper shows the performance of this algorithm.

关键词： constant modulus multitarget adaptive array

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Analysis of the diffracted current basis functions used in the hybrid MoM-PO method

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Frontiers of Electrical and Electronic Engineering in China 2007年第3期2卷 350-354页

作者： GONG zhuqian XIAO Boxun zhu guoqiang GUO Jianyan Department of Electronics Engineering Sun Yat-sen UniversityGuangzhou 510275China Changjiang Water Resources Commission Wuhan 430010China School of Electronic Information Wuhan UniversityWuhan 430079China

The combined moment method(MoM)-physical optics(PO)approach proposed by Bilow fails in some *** on the theory of diffraction and the fundamental theory of electromagnetism,Bilow’s diffracted current basis function was modified both within and outside the transition *** improved MoM-PO technique is validated by comparison with exact solutions for a right-angled perfectly conducting wedge at normal incidence.

关键词： theory of diffraction wedge diffracted current basis function(DCBF)

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Evaluation of the Mechanisms Underlying Amino Acid and Microbiota Interactions in Intestinal Infections Using Germ-Free Animals

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Infectious Microbes & Diseases 2021年第2期3卷 79-86页

作者： Yapeng Yang Peng Bin Shiyu Tao guoqiang zhu Zhifeng Wu Wei Cheng Wenkai Ren Hong Wei State Key Laboratory of Agricultural Microbiology College of Animal Sciences and TechnologyHuazhong Agricultural UniversityWuhanHubeiChina Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses Joint International Research Laboratory of Agriculture and AgriProduct Safety of Ministry of Education of ChinaCollege of Veterinary MedicineYangzhou UniversityYangzhouJiangsuChina State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory of Lingnan Modern AgricultureNational Engineering Research Center for Breeding Swine IndustryGuangdong Provincial Key Laboratory of Animal Nutrition ControlCollege of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina

Intestinal infectious diseases refer to the inflammatory changes in the intestinal tract caused by pathogens(including bacteria,viruses,fungi,protozoa,or parasites)or their toxic products.A large number of microorganisms colonize the intestinal tract of healthy people,which together with the intestinal epithelium constitute the biological barrier of the intestinal tract to resist infectious *** an“invisible organ,”the intestinal flora is closely related to human nutrition metabolism and intestinal infections.A variety of intestinal flora participates in the nutritional metabolism of amino acids,and the small molecular substances produced by the amino acid metabolism through the intestinal flora can enhance intestinal immunity and resist bacterial *** turn,amino acids can also regulate the composition of the intestinal flora,maintain the steady-state of the intestinal flora,protect the intestinal barrier,and inhibit colonization by pathogenic *** a model animal with a clear microbial background,germ-free(GF)animals can clarify the mechanisms of interactions between intestinal microbes and amino acid metabolism in intestinal infections by combining genetic engineering technology and multi-omics *** article reviews related researches on the involvement of intestinal microbes in host amino acid metabolism and resistance to intestinal infections and discusses the advantages of GF animal models for studying the underlying *** GF animal model is helpful to further study the intervention effects of amino acid metabolism of targeted intestinal flora on intestinal infections.

关键词： germ-free animal intestinal barrier intestinal flora intestinal immunity intestinal infection metabolism of amino acids

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Melatonin inhibits Gram-negative pathogens by targeting citrate synthase

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Science China(Life Sciences) 2022年第7期65卷 1430-1444页

作者： Fang He Yuan Liu Pan Li Xiaoyan Wu Yaoyao Xia Dong Zhang Nengzhang Li Yuanyi Peng guoqiang zhu Rüdiger Hardeland Russel JReiter Wenkai Ren College of Veterinary Medicine Southwest UniversityChongqing 400715China State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory of Lingnan Modern AgricultureGuangdong Provincial Key Laboratory of Animal Nutrition ControlNational Engineering Research Center for Breeding Swine IndustryCollege of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642China Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China Jiangsu Co-innovation Center for Important Animal Infectious Diseases and ZoonosesCollege of Veterinary MedicineInstitute of Comparative MedicineYangzhou UniversityYangzhou 225009China Johann Friedrich Blumenbach Institute of Zoology and Anthropology University of GöttingenGöttingen 37073Germany Department of Cellular and Structural Biology University of Texas Health Science CenterSan AntonioTX 78229USA

Bacterial infections caused by Gram-negative pathogens represent a growing burden for public health *** the urgent need for new antibiotics that effectively fight against pathogenic bacteria,very few compounds are currently under development or approved in the clinical *** compounds for other uses offers a productive strategy for the development of new *** we report that the multifaceted melatonin effectively improves survival rates of mice and decreases bacterial loads in the lung during ***,melatonin specifically inhibits the activity of citrate synthase of Gram-negative pathogens through directly binding to the R300,D363,and H265 sites,particularly for the notorious Pasteurella *** findings highlight that usage of melatonin is a feasible and alternative therapy to tackle the increasing threat of Gram-negative pathogen infections via disrupting metabolic flux of bacteria.

关键词： citrate synthase citric acid Gram-negative pathogens melatonin P.multocida

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Analysis of Double Bounce Scattering Between Target and Rough Surface

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电波科学学报 1996年第1期 80-84页

作者： zhu guoqiang Cao Qingfeng Yang Heling (College of Electrical and Informatics, Wuhan University, Wuchang, Hubei, 430072, China)

ＡｎａｌｙｓｉｓｏｆＤｏｕｂｌｅＢｏｕｎｃｅＳｃａｔｔｅｒｉｎｇＢｅｔｗｅｅｎＴａｒｇｅｔａｎｄＲｏｕｇｈＳｕｒｆａｃｅ￥ＺｈｕＧｕｏｑｉａｎｇ；ＣａｏＱｉｎｇｆｅｎｇ；ＹａｎｇＨｅｌｉｎｇ（ＣｏｌｌｅｇｅｏｆＥｌｅ... 详细信息

ＡｎａｌｙｓｉｓｏｆＤｏｕｂｌｅＢｏｕｎｃｅＳｃａｔｔｅｒｉｎｇＢｅｔｗｅｅｎＴａｒｇｅｔａｎｄＲｏｕｇｈＳｕｒｆａｃｅ￥ＺｈｕＧｕｏｑｉａｎｇ；ＣａｏＱｉｎｇｆｅｎｇ；ＹａｎｇＨｅｌｉｎｇ（ＣｏｌｌｅｇｅｏｆＥｌｅｃｔｒｉｃａｌａｎｄＩｎｆｏｒｍａ...

关键词： Target Analysis of Double Bounce Scattering Between Target and Rough Surface

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Plane Wave Scattering by a Step on Infinite Perfect Conducting Plane Surface

Plane Wave Scattering by a Step on Infinite Perfect Conducti...

引用

1999 International Conference on Computational Electromagnetics and Its Applications(ICCEA’99)

作者： Jin Sun guoqiang zhu Lizhi Zheng Electronic ＆ Information College Wuhan University

ISBN: (纸本)0780358023

＜正＞Plane wave scattering by a three-dimensional step on infinite perfect conducting plane surface is studied in the case where the scattering problem is reduced to the frequency or time domain electric integral equation（EFIE）.The conducting surface is modeled by planar triangular patches for numerical solution and results show that the current induced by incident wave is highly perturbed because of the presence of a three-dimensional step.

关键词： electromagnetic wave scattering electric field integral equations time-domain analysis frequency-domain analysis conducting bodies method of moments plane wave scattering electromagnetic scattering infinite perfect conducting plane surface three-dimensional step discontinuity time domain frequency domain electric field integral equation EFIE planar triangular patches numerical solution

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动物源产肠毒素大肠杆菌(ETEC)黏附素研究进展

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微生物学报 2012年第6期52卷 679-686页

作者：周虹朱军朱国强扬州大学兽医学院禽类预防医学教育部重点实验室扬州225009

动物源产肠毒素大肠杆菌(enterotoxigenic Escherichia coli,ETEC)是引起动物(尤其是幼龄动物)腹泻的主要病原菌。已知黏附素和肠毒素是ETEC中两种重要的毒力因子,在致病性中两者缺一不可。其中黏附素结合到宿主易感肠上皮细胞是ETEC感... 详细信息

动物源产肠毒素大肠杆菌(enterotoxigenic Escherichia coli,ETEC)是引起动物(尤其是幼龄动物)腹泻的主要病原菌。已知黏附素和肠毒素是ETEC中两种重要的毒力因子,在致病性中两者缺一不可。其中黏附素结合到宿主易感肠上皮细胞是ETEC感染的第一步,也是最重要的关键步骤。动物源ETEC的菌毛黏附素主要包括K88、K99、987P、F18、F17和F41等。人们从20世纪60年代就开始了ETEC菌毛黏附素的相关研究,包括菌毛的基因、结构组成、生物合成、菌毛表达的调控机制以及黏附素和宿主受体相互作用等,这些研究基础有助于我们深入了解ETEC病原菌的感染机理;并且在疾病诊断和新疫苗的开发中具有重大意义。

关键词：产肠毒素大肠杆菌(ETEC) 黏附素菌毛

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