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Distributed Robust Containment Control of Linear Heterogeneous Multi-Agent Systems:An Output Regulation Approach

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IEEE/CAA Journal of Automatica Sinica 2022年第5期9卷 864-877页

作者： Wenchao huang Hailin Liu jie huang College of Electrical Engineering and Automation Fuzhou UniversityFuzhou 350108China College of Electrical Engineering and Automation Fuzhou UniversityFuzhou 350108 School of Automation Sicience and Engineering South China University of TechnologyGuangzhou 510641China IEEE

In this paper,we consider the robust output containment problem of linear heterogeneous multi-agent systems under fixed directed networks.A distributed dynamic observer based on the leaders’measurable output was designed to estimate a convex combination of the leaders’***,for the case of followers with identical state dimensions,distributed dynamic state and output feedback control laws were designed based on the state-coupled item and the internal model compensator to drive the uncertain followers into the leaders’convex hull within the output regulation ***,we extended theoretical results to the case where followers have nonidentical state *** establishing virtual errors between the dynamic observer and followers,a new distributed dynamic output feedback control law was constructed using only the states of the compensator to solve the robust output containment ***,two numerical simulations verified the effectiveness of the designed schemes.

关键词： Containment control internal model principle multi-agent systems observer technique output regulation

Transmission upper limit of band-pass double-layer FSS and method of transmission performance improvement

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Journal of Systems Engineering and Electronics 2015年第2期26卷 224-231页

作者： Minjie huang Zhijun meng School of Aeronautic Science and Engineering Beihang University

The transmission upper limit of a double-layer frequency selective surface （FSS） with two infinitely thin metal arrays is pre- sented based on the study of the general equivalent transmission line model of a double-layer FSS. Results of theoretical analyses, numerical simulations and experiments show that this transmis- sion upper limit is independent of the array and the element, which indicates that it is impossible to achieve a transmission upper limit higher than this one under a given incident and dielectric- supporting condition by the design of the periodic array. Both the applicable condition and the possible application of the transmis- sion upper limit are discussed. The results show that the transmis- sion upper limit not only has a good reachability, but also provides a key to effectively improve the transmission performance of a double-layer FSS or more complex frequency selective structures.

关键词： frequency selective surface(FSS) equivalent circuit transmission line theory dielectric interfaces

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基于纸基微芯片的样本前处理方法研究进展

分析测试学报 2025年第1期44卷 91-98页

作者：马亚星顾梦杰李旭东沈先涛华中科技大学同济医学院公共卫生学院湖北武汉430030

纸基微芯片(μPADs)是一种以纸质材料为基底的简易、便携式检测平台,在临床诊断、食品质量控制和环境监测等领域显示出极大的应用前景。作为快速检测平台,纸基微芯片除了需要对目标物进行快速定量,还要完成样本的前处理过程。科学家近... 详细信息

纸基微芯片(μPADs)是一种以纸质材料为基底的简易、便携式检测平台,在临床诊断、食品质量控制和环境监测等领域显示出极大的应用前景。作为快速检测平台,纸基微芯片除了需要对目标物进行快速定量,还要完成样本的前处理过程。科学家近年来开发了多种基于纸基微芯片的样本前处理方法,用于不同样本中目标物的分析。由于纸基具有强兼容性能,增强纸基芯片的样本前处理功能并将其与各种快速检测方法联用,能极大地扩展纸基微芯片的应用领域。该文对纸基微芯片的自驱动以及纸基微芯片自驱动与外驱动相结合的样本前处理方法进行了总结,概述了纸基微芯片在目标分析物提取、富集等前处理方面的研究进展,探讨了各种纸基微芯片前处理方法的优点和局限性。另外还展望了纸基微芯片的发展方向—除了不断提高样品前处理能力来扩展其在样本制备中的应用,还需要开发商业化的纸基微芯片来满足各类行业的检测需求。

关键词：快速分析纸基微芯片分离驱动前处理

Ultraviolet/ozone and oxygen plasma treatments for improving the contact of carbon nanotube thin film transistors

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Science Bulletin 2018年第12期63卷 802-806页

作者： Qi huang Jiye Xia jie Zhao Guodong Dong Fang Liu Hu meng Xuelei Liang Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics Peking UniversityBeijing 100871China BOE Technology Group Co. Ltd.Beijing 100176China

Carbon nanotube thin film transistor （CNT-TFF） is an emerging technology for future macroelectronics, such as chemical and biological sensors, optical detectors, and the backplane driving circuits for flat panel displays. The mostly reported fabrication method of CNT-TFT is a lift-off based photolithography process. In such fabrication process, photoresist （PR） residue contaminates the interface of tube-metal contact and deteriorates the device performance. In this paper, ultraviolet ozone （UVO） and oxygen plasma treat- ments were employed to remove the PR contamination. Through our well-designed experiments, the UVO treatment is confirmed an effective way of cleaning contamination at the tube-metal interface, while oxygen plasma treatment is too reactive and hard to control, which is not appropriate for CNT-TFTs. It is determined that 2-6 rain UVO treatment is the preferred window, and the best optimized treatment time is 4 rain, which leads to 15% enhancement of device performance.

关键词： Carbon nanotube Thin film transistor Contact UVO Oxygen plasma

Dynamic process analysis of the Niumiangou landslide triggered by the Wenchuan earthquake using the finite difference method and a modified discontinuous deformation analysis

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Journal of Mountain Science 2021年第4期18卷 1034-1048页

作者： huang Da meng Qiu-jie SONG Yi-xiang CUI Sheng-hua CEN Duo-feng School of Civil and Transportation Engineering Hebei University of TechnologyTianjin 300401China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China

The Niumiangou landslide was the largest landslide triggered by the 2008 Wenchuan earthquake,which was significantly affected by the amplification effect of seismic *** ringshear experiments indicated that the materials in the source area of the Niumiangou landslide were subjected to friction degradation under a big shear displacement,which may result in rapid movement of the *** order to better understand the landslide movement and study the effect of the friction degradation on movement mechanisms,the dynamic process of Niumiangou landslide was simulated with a new numerical method,which combines the finite difference method(FDM)and the discontinuous deformation analysis(DDA).First,the FDM was used to study the initiation time,amplification effect and velocity of the ***,these initiation velocities were applied to the blocks in the DDA model by corresponding coordination in the FDM model.A displacementdependent friction model of the sliding surface was incorporated into DDA code to further understand the kinetic behavior of the *** results show that the displacement-dependent friction strongly decreases the friction coefficient of sliding surface under a big displacement,which can obviously promote the run-out and velocity of *** model output well matches the topographic map formed by the *** implies that the proposed model can be applied to the simulation of earthquake-induced landslides with amplification effect,and the friction degradation model is important to clarify the movement mechanism of high-speed and long-distance landslides.

关键词： Wenchuan earthquake Discontinuous deformation analysis(DDA) Niumiangou landslide Amplification effects Displacement-dependent friction model

Relativistic configuration-interaction density functional theory:Nonaxial effects on nuclear ββ decay

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Science Bulletin 2024年第13期69卷 2017-2020页

作者： Yakun Wang Pengwei Zhao jie meng State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China

Nuclear ββ decay is a second-order weak process in which an even-even nucleus decays to its neighboring even-even nucleus by turning two neutrons to two protons while emitting two electrons.A nucleus undergoes such ... 详细信息

关键词： decay neighboring interaction

Realizing simultaneously excellent energy storage and discharge properties in AgNbO_(3)based antiferroelectric ceramics via La^(3t)and Ta^(5+)co-substitution strategy

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Journal of Materiomics 2023年第2期9卷 410-421页

作者： Yuqi Zhou Shuaibing Gao jie huang meng Shen Shenglin Jiang Yunbin He Qingfeng Zhang Hubei Key Lab of Ferro&Piezoelectric Materials and Devices School of Materials Science&EngineeringHubei UniversityWuhan430062China School of Physics and Electronic Science Hubei UniversityWuhan430062China School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan430074China

AgNbO_(3)based antiferroelectric(AFE)ceramics have large maximum polarization and low remanent polarization,and thus are important candidates for fabricating dielectric ***,their energy storage performances have been still large difference with those of lead-based AFEs because of their room-temperature ferrielectric(FIE)*** this study,novel La^(3+)and Ta^(5+)co-substituted AgNbO_(3)ceramics are designed and *** introduction of La^(3+)and Ta^(5+)decreases the tolerance factor,reduces the polarizability of B-site cations and increases local structure heterogeneity of AgNbO_(3),which enhance AFE phase stability and refine polarization-electric field(PeE)***,adding La^(3+)and Ta^(5+)into AgNbO_(3)ceramics causes the decrease of the grain sizes and the increase of the band gap,which contribute to increased *** a consequence,a high recoverable energy density of 6.79 J/cm3 and large efficiency of 82.1%,which exceed those of many recently reported AgNbO_(3)based ceramics in terms of overall energy storage properties,are obtained in(Ag0.88La0.04)(Nb0.96Ta0.04)O_(3)***,the discharge properties of the ceramic with discharge time of 16 ns and power density of 145.03 MW/cm3 outperform those of many lead-free dielectric ceramics.

关键词： AgNbO_(3)antiferroelectrics Grain sizes Tolerance factor Energy storage Discharge properties

The Twisted Homology of Simplicial Set

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Acta Mathematica Sinica,English Series 2022年第10期38卷 1781-1802页

作者： meng meng ZHANG Jing Yan LI jie WU School of Mathematical Sciences Hebei Normal UniversityShijiazhuang 050024P.R.China Yanqi Lake Beijing Institute of Mathematical Sciences and Applications Beijing 101408P.R.China

In this article,we give a generalization of δ-twisted homology introduced by Jingyan Li,Vladimir Vershinin and jie Wu,called Δ-twisted homology,which enriches the theory of δ-(co)homology introduced by Alexander Grigor’yan,Yuri Muranov and Shing-Tung *** show that the Mayer-Vietoris sequence theorem holds for Δ-twisted *** the Δ-twisted ideas to Cartesian products,we introduce the notion of Δ-twisted Cartesian product on simplicial sets,which generalizes the classical work of Barratt,Gugenheim and Moore on twisted Cartesian products of simplicial *** certain hypothesis,we show that the coordinate projection of Δ-twisted Cartesian product admits a fibre bundle structure.

关键词： Simplicial set Δ-Twisted homology Homotopy type Fibre bundle

Interference Suppression and Jitter Elimination Ability-Based Adaption Tracking Guidance for Robotic Fishes

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 126-137页

作者： Dongfang Li jie huang Rob Law Xin Xu Limin Zhu Edmond Q.Wu IEEE the School of Electrical Engineering and Automation Fuzhou University the Key Laboratory of System Control and Information Processing Ministry of Education the School of Electrical Engineering and Automation Fuzhou University 5G+Industrial Internet Institute Fuzhou University the University of Macau the College of Mechatronics and Automation National University of Defense Technology the School of Mechanical Engineering Shanghai Jiao Tong University the Department of Computer Science and Engineering Shanghai Jiao Tong University

This work presents an adaptive tracking guidance method for robotic fishes. The scheme enables robots to suppress external interference and eliminate motion jitter. An adaptive integral surge line-of-sight guidance rule is designed to eliminate dynamics interference and sideslip issues. Limited-time yaw and surge speed observers are reported to fit disturbance variables in the model. The approximation values can compensate for the system's control input and improve the robots' tracking ***, this work develops a terminal sliding mode controller and third-order differential processor to determine the rotational torque and reduce the robots' run jitter. Then, Lyapunov's theory proves the uniform ultimate boundedness of the proposed method. Simulation and physical experiments confirm that the technology improves the tracking error convergence speed and stability of robotic fishes.

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