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Special focus on analysis and control of finite-valued network systems

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Science China(Information Sciences) 2018年第1期61卷 7-8页

作者： haitao li Tielong SHEN Jianquan LU Shandong Normal University Sophia University Southeast University

Finite-valued network system(FVNS)is a kind of network systems whose state,input and output take values from a finite *** has wide applications in the research fields such as systems biology,game theory,digital circuits,finite automata,graph theory,fuzzy control,nonlinear feedback shift register,and so ***,an algebraic state space representation(ASSR)approach has been developed for the

关键词： net Special focus on analysis and control of finite-valued network systems

State-feedback set stabilization of logical control networks with state-dependent delay

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Science China(Information Sciences) 2021年第6期64卷 233-235页

作者： Yating ZHENG haitao li Jun-E FENG School of Mathematics Shandong University School of Mathematics and Statistics Shandong Normal University

Dear editor,As an important mathematical model for the elucidation,analysis, and control of gene regulatory networks(GRNs),logical networks have attracted considerable attention from scientists in numerous fields of study. From a mathematical point of view, a logical network is parameter-free; thus, it can be utilized to reconstruct relatively large-scale *** studying logical networks, stabilization is highly critical as it has been widely used in maintaining human health and treating diseases [1, 2].

关键词： State-feedback set stabilization of logical control networks with state-dependent delay

Comparative experimental study on porosity, mechanical and CO_(2) adsorption characteristics of coal and shale

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Frontiers of Earth Science 2023年第3期17卷 788-796页

作者： haitao li Guo YU Xiaolei WANG Dongming ZHANG Exploration and Development Research Institute of PetroChina Southwest Oil and Gas Field CompanyChengdu 610051China PetroChina Southwest Oil and Gas Field Company Planning Department Chengdu 610051China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China School of Resources and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

To compare the pore structure, mechanical and CO_(2) adsorption properties of coal and shale, a series of experiments were carried out using nuclear magnetic resonance (NMR), uniaxial compression, Brazilian splitting, and high-pressure CO_(2) adsorption. The results show that the total porosity of coal is 7.51 times that of shale, and shale is dominated by adsorption pores, while adsorption pores and seepage pores in coal are equally important. Moreover, it is found that the micropores in shale are more advantageous, while meso-macropore in coal are more significant. The adsorption pore surface of coal is rougher than that of shale, and the seepage pore structure of shale is more complex. The uniaxial compressive strength, elastic modulus and absorption energy of shale are 2.01 times, 2.85 times, and 1.27 times that of coal, respectively, indicating that shale has higher compressive capacity and resistance to elastic deformation than coal. The average tensile strength, Brazilian splitting modulus, absorbed energy and brittleness index of shale are 7.92 times, 6.68 times, 10.78 times, and 4.37 times that of coal, respectively, indicating that shale has higher tensile strength and brittleness, but lower ductility, compared with coal. The performed analyses show that under the same conditions, the CO_(2) adsorption capacity of coal is greater than that of shale. The present article can provide a theoretical basis to implement CO_(2)-enhanced coalbed methane (CBM)/shale gas extraction.

关键词： coal shale NMR mechanical properties adsorption characteristic

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Simplification of Shapley value for cooperative games via minimum carrier

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Control Theory and Technology 2021年第2期19卷 157-169页

作者： haitao li Shuling Wang Aixin liu Meixia Xia School of Mathematics and Statistics Shandong Normal UniversityJinan250014ShandongChina

Shapley value is one of the most fundamental concepts in cooperative *** paper investigates the calculation of the Shapley value for cooperative games and establishes a new formula via ***,a necessary and sufficient condition is presented for the verification of carrier,based on which an algorithm is worked out to find the unique minimum ***,by virtue of the properties of minimum carrier,it is proved that the profit allocated to dummy players(players which do not belong to the minimum carrier)is zero,and the profit allocated to players in minimum carrier is only determined by the minimum ***,a new formula of the Shapley value is presented,which greatly reduces the computational complexity of the original formula,and shows that the Shapley value only depends on the minimum ***,based on the semi-tensor product(STP)of matrices,the obtained new formula is converted into an equivalent algebraic form,which makes the new formula convenient for calculation via MATLAB.

关键词： Shapley value Cooperative game Carrier Algebraic form Semi-tensor product of matrices

Design and Analysis of Microstrip Multi-Channeled Filter Using Photonic Crystal Branchy Defect

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Journal of Rare Earths 2006年第Z1期24卷 136-139页

作者： li Yunhui Jiang haitao He li li Hongqiang Zhang Yewen Chen Hong Pohl Institute of Solid State Physics Tongji University Shanghai 200092 China Pohl Institute of Solid State Physics Tongji University Shanghai 200092 China Pohl Institute of Solid State Physics Tongji University Shanghai 200092 China Pohl Institute of Solid State Physics Tongji University Shanghai 200092 China Pohl Institute of Solid State Physics Tongji University Shanghai 200092 China Pohl Institute of Solid State Physics Tongji University Shanghai 200092 China

A multi-channeled filter based on branchy defect in a microstrip photonic crystal was proposed. By introducing a branchy structure across the defect region, multiple defect modes will appear inside the photonic gap, leading to the multi-channeled filtering phenomenon. In comparison with the conventional multi-channeled filters, the proposed structure is more compact and tunable as far as the device volume and fabrication are concerned. The microwave experiment results are found in agreement with simulation results.

关键词： photonic crystals defect mode multi-channeled filter

A Multi-agent Based Evaluation Framework and Its Applications

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IEEE/CAA Journal of Automatica Sinica 2014年第2期1卷 218-224页

作者： Jinlong Wang Qianchuan Zhao haitao li Center for Intelligent and Networked System Department of AutomationTsinghua University

The evaluation system is significant for assessment of technologies, experiments, energy cost and effectiveness, especially for the complicated engineering systems, such as energy systems, weapon systems and spacecraft systems. However, as engineering systems become more and more distributed and heterogeneous, evaluation frameworks need to be more universal,distributed and interactive. In this paper, we compare several typical evaluation frameworks and propose a novel evaluation framework based on multi-agent technology. We provide two case studies, indoor comfort system and technology assessment of spacecraft systems, respectively. The results show that the proposed framework can work efficiently.

关键词： Multi-agent systems Standards Indexes Measurement Robot sensing systems Data models Computer architecture

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A Review of Basic Mechanical Properties of Bamboo Scrimber Based on Small-Scale Specimens

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Journal of Renewable Materials 2024年第4期12卷 869-894页

作者： Xin Xue haitao li Rodolfo Lorenzo College of Civil Engineering Nanjing Forestry UniversityNanjing210037China National-Provincial Joint Engineering Research Center of Biomaterials for MACHINERY PACKAGE Nanjing Forestry UniversityNanjing210037China Jiangsu Engineering Research Center of Bamboo and Wood Carbon FixationMaterials and Structures Nanjing Forestry UniversityNanjing210037China Department of Civil Environmental and Geomatic EngineeringUniversity College LondonLondonWC1E 6BTUK

This review summarizes the existing knowledge about the mechanical properties of bamboo scrimber(BS)in *** to literature reviews,the strength of BS under different load modes is affected by a series of factors,such as the type of original bamboo,growth position,resin content,treatment method and ***,different production processes can be adopted according to different requirements,and bamboo scrimbers can also be classified *** addition,this review summarizes the changes in different factors considered by scholars in the research on the mechanical properties of BS,so that readers can have an overall understanding of the existing research and make more innovative and valuable research on this *** review provides and discusses the conclusive observations,the current research gaps and future research directions on the mechanical properties of BS.

关键词： Bamboo scrimber manufacturing process mechanical properties failure modes constitutive model

Leader-Follower Consensus of Multi-Agent Systems over Finite Fields via Semi-Tensor Product of Matrices 36

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Leader-Follower Consensus of Multi-Agent Systems over Finite...

State Feedback Control for a Class of Fractional Order Nonlinear Systems

第36届中国控制会议

作者： li Yalu li haitao DING Xueying School of Mathematics and Statistics Shandong Normal University

ISBN: (纸本)9781538629185

This paper investigates the leader-follower consensus problem of multi-agent systems with time-delay over finite fields by using the semi-tensor product of ***,the dynamics of leader-follower multi-agent systems with time-delay is converted into an equivalent algebraic ***,based on the algebraic form,a necessary and sufficient condition is presented for the leader-follower consensus problem of multi-agent systems with time-delay over finite ***,based on the analysis of leader-follower multi-agent systems with time-delay,we add a control into system and present a necessary and sufficient condition for the leader-follower consensus problem of multi-agent systems with time-delay over finite fields.

关键词： Leader-Follower Consensus Distributed Control Time-Delay Finite Field Semi-Tensor Product of Matrices

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IEEE/CAA Journal of Automatica Sinica 2016年第4期3卷 483-488页

作者： Yige Zhao Yuzhen Wang haitao li School of Mathematical Sciences University of Jinan School of Control Science and Engineering Shandong University School of Mathematical Science Shandong Normal University

Using the Lyapunov function method, this paper investigates the design of state feedback stabilization controllers for fractional order nonlinear systems in triangular form, and presents a number of new results. First, some new properties of Caputo fractional derivative are presented, and a sufficient condition of asymptotical stability for fractional order nonlinear systems is obtained based on the new properties. Then, by introducing appropriate transformations of coordinates, the problem of controller design is converted into the problem of finding some parameters, which can be certainly obtained by solving the Lyapunov equation and relevant matrix inequalities. Finally, based on the Lyapunov function method, state feedback stabilization controllers making the closed-loop system asymptotically stable are explicitly constructed. A simulation example is given to demonstrate the effectiveness of the proposed design procedure. © 2014 Chinese Association of Automation.

关键词： Closed loop systems Controllers Differentiation (calculus) linear transformations Lyapunov functions Nonlinear systems Stabilization State feedback

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