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异构无人系统协同控制研究进展

工程科学学报 2025年第1期47卷 66-78页

作者：郭兴李擎姚其家鲁小雅北京科技大学自动化学院北京100083 工业过程知识自动化教育部重点实验室北京100083

面对复杂化、多样化和立体化的任务需求,异构无人系统将空、地、海跨域优势互补,最大化提升系统各方面能力,为未来协同作战和智慧民生提供有力的技术保障.首先,梳理了国内外在跨域协同领域出台的推动性文件,介绍了异构无人系统在军用、... 详细信息

面对复杂化、多样化和立体化的任务需求,异构无人系统将空、地、海跨域优势互补,最大化提升系统各方面能力,为未来协同作战和智慧民生提供有力的技术保障.首先,梳理了国内外在跨域协同领域出台的推动性文件,介绍了异构无人系统在军用、科研院所和民用等三方面的实际应用.其次,针对异构无人系统关键技术之一的协同控制,分别阐述了异构无人系统协同控制在一致性、轨迹跟踪和编队‒合围等三方面的最新进展.此外,还特别讨论了在不同通信条件下协同控制所面临的挑战和解决方案.其中,由于一致性和轨迹跟踪存在上层控制理论性和下层控制可行性的区别,进一步从滑模控制、自适应控制、反步控制和自适应动态规划等四方面对轨迹跟踪研究展开阐述.然后,为了更好地促进异构无人系统协同控制在实际中的应用,通过总结前人相关工作,讨论了其在多约束控制与实时性、多任务切换控制和跨域通信下稳定性等三方面亟需解决的技术瓶颈.最后,综合异构无人系统协同控制研究现状和实际需求来看,指出了其在深度强化学习与分布式博弈、人机交互以及反群体智能等三方面的发展趋势.

关键词：异构无人系统协同控制跨域协同任务需求技术瓶颈

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Performance Characterization and Receiver Design for Random Temporal Multiple Access in Non-Coordinated Networks

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China Communications 2019年第6期16卷 173-184页

作者： Yin Lu jun Fang Zhong guo j.Andrew Zhang jiangsu Key Laboratory of wireless Communications Nanjing University of Posts and TelecommunicationsNanjing 210003China Engineering Research Center of Health Service System Based on Ubiquitous wireless Networks Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China wuxi Longi Intelligent Technology Co.Ltd. Wuxi 214400China University of Technology Sydney Ultimo NSW 2007Australia

Random access is a well-known multiple access method for uncoordinated communication *** work mainly focuses on optimizing iterative access protocols,assuming that packets are corrupted once they are collided,or that feedback is available and can be *** practice,a packet may still be able to be recovered successfully even when collided with other *** design and performance analysis under such a situation,particularly when the details of collision are taken into consideration,are less *** this paper,we provide a framework for analytically evaluating the actual detection performance in a random temporal multiple access system where nodes can only *** expressions are provided for collision probability and signal to interference and noise ratio(SINR)when different numbers of packets are *** then discuss and compare two receiver options for the AP,and provide detailed receiver design for the premium *** particular,we propose a synchronization scheme which can largely reduce the preamble *** also demonstrate that system performance could be a convex function of preamble length both analytically and via simulation,as well as the forward error correction(FEC)coding rate.

关键词： random temporal multiple access non-coordination networks packet collision

Production Cross-Section Estimates for Strongly-Interacting Electroweak-Symmetry Breaking Sector Resonances at Particle Colliders

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Communications in Theoretical Physics 2015年第12期64卷 701-709页

作者： Antonio Dobado guo Feng-Kun Felipe j.Llanes-Estrada Departamento de Física Teórica Universidad Complutense de Madrid State Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Science Helmholtz-Institut für Strahlen-und Kernphysik and Bethe Center for Theoretical Physics Universitat Bonn

we are exploring a generic strongly-interacting Electroweak Symmetry Breaking Sector(EwSBS) with the low-energy effective field theory for the four experimentally known particles(w_L~±,Z_l,h) and its dispersion-relation based unitary *** this contribution we provide simple estimates for the production cross-section of pairs of the EwSBS bosons and their resonances at proton-proton colliders as well as in a future e^-e^+(or potentially aμ^-μ^+) collider with a typical few-TeV *** examine the simplest production mechanisms,tree-level production through a w(dominant when quantum numbers allow) and the simple effective boson approximation(in which the electroweak bosons are considered as collinear partons of the colliding fermions).we exemplify with custodial isovector and isotensor resonances at 2 TeV,the energy currently being discussed because of a slight excess in the ATLAS 2-jet *** find it hard,though not unthinkable,to ascribe this excess to one of these w_lw_l rescattering *** isovector resonance could be produced at a rate smaller than,but close to earlier CMS exclusion bounds,depending on the parameters of the effective *** ZZ excess is then problematic and requires additional physics(such as an additional scalar resonance).The isotensor one(that would describe all charge combinations) has smaller cross-section.

关键词： strongly interacting electroweak symmetry breaking

Climatic change features of fog and haze in winter over North China and Huang-Huai Area

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Science China Earth Sciences 2015年第5期58卷 1370-1376页

作者： YIN ZhiCong wANG Huijun guo wenLi Nansen-Zhu International Research Center Institute of Atmospheric Physics Chinese Academy of Sciences Beijing Meteorology Bureau Climate Change Research Center Chinese Academy of Sciences

This paper revealed the climatic change characteristics of fog and haze of different levels over North China and Huang-Huai area(NCHH).It was found that the haze-prone period has changed from winter into a whole year,and the haze days(HD)in winter have increased *** foggy days(FD)are half of *** are little difference on the number of days and trends of fog at various *** HD and FD show no obvious positive correlation until the *** has larger spatial scale,showing more in the south than in the *** occurs mainly around large cities with a discrete *** the background of weakened East Asian winter Monsoon(EAwM)and sufficient particulate matter,the negative correlation between haze and wind speed is weakened,but the positive correlation between haze and moisture conditions(precipitation and humidity)is significantly *** recent years,small wind and variability appear ***,as the stable source and strong moisture absorption of the aerosol particles,the moisture condition becomes one key control factor in the haze,especially wet haze with less *** contrast,the FD presents a stable positive correlation with precipitation and relative humidity,but has no obvious negative correlation with wind speed.

关键词： haze fog visibility east asian winter monsoon weather conditions

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Emerging high-entropy strategy: A booster to the development of cathode materials for power batteries

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journal of Advanced Ceramics 2024年第8期13卷 1093-1118页

作者： Liping Huang jinging Zhu j-Xuan Liu Houzheng wu guo-jun Zhang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China SIAMC Advanced Materials Cooperation Huzhou 313100China

The coordinated development of new energy vehicles and the energy storage industry has become essential for reducing carbon *** cathode material is the key material that determines the energy density and cost of a power battery,but currently developed and applied cathode materials cannot meet the requirements for high specific capacity,low cost,safety,and good ***-entropy materials(HEMs)are a new type of single-phase material composed of multiple principal elements in equimolar or near-equimolar *** interaction between multiple elements can play an important role in improving the comprehensive properties of the material,which is expected to solve the limitations of battery materials in practical ***,this review provides a comprehensive overview of the current development status and modification strategies of power batteries(lithium-ion batteries(LiBs)and sodium-ion batteries(SIBs)),proposes a high-entropy design strategy,and analyses the structure-activity relationship between the high-entropy effects and battery ***,future research topics related to high-entropy cathode materials,including computational guide design,specific synthesis methods,high-entropy electrochemistry,and high-throughput databases,are *** review aims to provide practical guidance for the development of high-entropy cathode materials for next-generation power batteries.

关键词： cathode materials lithium-ion battery(LIB) sodium-ion battery(SIB) high-entropy strategy

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高温下HMX热分解反应分子动力学模拟

原子与分子物理学报 2025年第2期42卷 105-110页

作者：陈芳贾方硕陈瑶李天浩郭国琦董羚中北大学化学与化工学院太原030051

本文采用ReaxFF-lg反应分子动力学方法研究了奥克托金(HMX)在六种不同温度下的初始反应热分解过程,验证了ReaxFF-lg势函数对HMX体系的适用性,计算了不同温度下HMX体系势能、总物种演化趋势、初始反应产物以及指前因子和活化能.结果表明,... 详细信息

本文采用ReaxFF-lg反应分子动力学方法研究了奥克托金(HMX)在六种不同温度下的初始反应热分解过程,验证了ReaxFF-lg势函数对HMX体系的适用性,计算了不同温度下HMX体系势能、总物种演化趋势、初始反应产物以及指前因子和活化能.结果表明,HMX热分解过程主要有三种初始分解机理:N-NO_(2)键的断裂,HONO的解离和主环上C-N键的断裂,计算得到的初始分解阶段活化能Ea和指前因子ln(A),与实验值相吻合.

关键词： HMX 反应分子动力学(RMD) ReaxFF-lg 热分解温度

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Stability analysis and design of time-delay uncertain systems using robust reliability method

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journal of Systems Engineering and Electronics 2011年第3期22卷 493-499页

作者： Shuxiang guo Faculty of Mechanics College of ScienceAir Force Engineering UniversityXi'an 710051P.R.China

A robust reliability method for stability analysis and reliability-based stabilization of time-delay dynamic systems with uncertain but bounded parameters is presented by treating the uncertain parameters as interval *** performance function used for robust reliability analysis is defined by a delayindependent stability *** design of robust controllers is carried out by solving a reliability-based optimization problem in which the control cost satisfying design requirements is *** kind of treatment makes it possible to achieve a balance between the reliability and control cost in the design of controller when uncertainties must be taken into *** the method,a robust reliability measure of the degree of stability of a time-delay uncertain system can be provided,and the maximum robustness bounds of uncertain parameters such that the time-delay system to be stable can be *** the procedures are based on the linear matrix inequality approach and therefore can be carried out *** effectiveness and feasibility of the proposed method are demonstrated with two practical *** is shown by numerical simulations and comparison that it is meaningful to take the robust reliability into account in the control design of uncertain systems.

关键词： stability uncertain system time-delay system robust reliability linear matrix inequality(LMI).

KINETIC STUDY OF SPINEL LiMn_2O_4 SYNTHESIZED BY SOLID REACTION wITH SOFT-CHEMICAL METHOD

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Acta Metallurgica Sinica(English Letters) 2005年第4期18卷 512-518页

作者： C.Q. Xu Y. w. Tian Y. C. Zhai Z.j. guo Z. Q. Huang School of Materials and Metallurgy Northeastern University Shenyang 110004 China

The differential thermal analysis （DTA） curves were measured at different heating rates in flowing air for studying the synthesis of the spinel LiMn2O3 with Li2CO3 and MnO2, The reaction began at about 503K, and finished at about 873K. The apparent activation energy of Kissinger method was about ***^-1, the reaction orderwas 1.67, the frequency factor was 7.81×10^9, and therefore the dinetic epuation was dδ/dt=A·exp（- E/RT）·（1-δ）^n=7.81×10^9, exp（-122770/RT）·（l-δ）^1.67 . Coats-Redfem integral method was used to analyze the DTA curves of the samples at different heating rates, and the calculated apparent activation energy and frequency factor were 112. 13kj· mol^-1 and 1.18 × 10^9, respectively, rather close to that of Kissinger method. X-ray diffraction （XRD） and scanning electron microscope （SEM） results shown that the synthesized LiMn2O3 possesses pure phase, regular shape and normal particle distribution.

关键词： lithium manganese oxides synthesized kinetics Kissinger method,Coats-Redfern integral method

Multi-scale investigation of short-range order and dislocation glide in MoNbTi and TaNbTi multi-principal element alloys

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npj Computational Materials 2023年第1期9卷 1430-1442页

作者： Hui Zheng Lauren T.w.Fey Xiang-guo Li Yong-jie Hu Liang Qi Chi Chen Shuozhi Xu Irene j.Beyerlein Shyue Ping Ong Department of NanoEngineering University of California San DiegoLa JollaCA 92093-0448USA Materials Department University of CaliforniaSanta BarbaraCA 93106-5050USA Department of Materials Science and Engineering University of MichiganAnn ArborMI 48109USA Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA 19104USA Department of Mechanical Engineering University of CaliforniaSanta BarbaraCA 93106-5070USA

Refractory multi-principal element alloys(RMPEAs)are promising materials for high-temperature structural ***,we investigate the role of short-range ordering(SRO)on dislocation glide in the MoNbTi and TaNbTi RMPEAs using a multi-scale modeling *** carlo/molecular dynamics simulations with a moment tensor potential show that MoNbTi exhibits a much greater degree of SRO than TaNbTi and the local composition has a direct effect on the unstable stacking fault energies(USFEs).From mesoscale phase-field dislocation dynamics simulations,we find that increasing SRO leads to higher mean USFEs and stress required for dislocation *** gliding dislocations experience significant hardening due to pinning and depinning caused by random compositional fluctuations,with higher SRO decreasing the degree of USFE dispersion and hence,amount of ***,we show how the morphology of an expanding dislocation loop is affected by the applied stress.

关键词： alloys dislocation element