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Scaled non-passive environmental interaction force tracking for telerobotic manufacturing system with variable time delay: 《Science China(Technological Sciences)》2025年第3期167-178,共12页Yukui ZHANG Fangyu PENG Yiming WAN Chen CHEN Zhitao GAO Haoyan LIU Yu WANG Rong YAN Xiaowei TANG; supported by the National Natural Science Foundation of China(Grant Nos.52188102,52105515,62373161)。; Robot teleoperation plays an important role in industrial manufacturing in unknown and dangerous environments beyond human reach.In telerobotic manufacturing tasks,environmental interaction forces may vary significant...; 关键词：non-passive interaction force position tracking scaled force tracking stability analysis telerobotic manufacturing system variable time delay

The Finite Volume Element Method for Time-Fractional Nonlinear Fourth-Order Diffusion Equation with Time Delay: 《Engineering(科研)》2025年第1期53-72,共20页Anran Li Qing Yang; In this article, a finite volume element algorithm is presented and discussed for the numerical solutions of a time-fractional nonlinear fourth-order diffusion equation with time delay. By choosing the second-order sp...; 关键词：Time-Fractional Nonlinear Fourth-Order Diffusion Equation with Time Delay Finite Volume Element Method Caputo-Fractional Derivative Optimal Priori Error Analysis

Self-consistent extraction of photoabsorption time delays in attosecond streak camera: 《Science China(Physics,Mechanics & Astronomy)》2024年第12期8-16,共9页Yutong Gao Hongcheng Ni Andreas Becker Jian Wu; supported by the National Natural Science Foundation of China (Grant Nos.92150105,12227807,and 12241407);the Science and Technology Commission of Shanghai Municipality (Grant Nos.21ZR1420100,and 23JC1402000);support by a grant from the U.S.Department of Energy,Division of Chemical Sciences,Atomic,Molecular and Optical Sciences Program (Grant No.DESC0001771)。; Photoionization can generally be decomposed into a photoabsorption process plus a half-scattering process.The streaking time delay observed in the attosecond streak camera,correspondingly,can be decomposed into a phot...; 关键词：attosecond streak camera photoabsorption time delay PHOTOIONIZATION

Distributed Control of Networked Microgrid with Heterogeneous Energy Storage Units Considering Multiple Types of Time Delays: 《Journal of Modern Power Systems and Clean Energy》2024年第6期1930-1941,共12页Guoxiu Jing Bonan Huang Rui Wang Chao Yang Qiuye Sun; This work was supported in part by the National Key Research and Development Program of China(No.2018YFA0702200);the National Natural Science Foundation of China(No.52377079);the Liaoning Revitalization Talents Program of China(No.XLYC2007181);the Fundamental Research Funds for the Central Universities(No.N2204010).; This paper focuses on the distributed control prob-lem in a networked microgrid(NMG)with heterogeneous ener-gy storage units(HESUs)in the environment considering multi-ple types of time delays,which include the state,...; 关键词：Networked microgrid(NMG) heterogeneous energy storage unit(HESU) distributed control time delay

Chaotic Motions of the van der Pol-Duffing Oscillator Subjected to Periodic External and Parametric Excitations with Delayed Feedbacks: 《Acta Mathematicae Applicatae Sinica》2024年第4期1111-1126,共16页Liang-qiang ZHOU Fang-qi CHEN; supported by the National Natural Science Foundation of China(No.11772148,12172166 and 11872201);China Postdoctoral Science Foundation(No.2013T60531)。; Chaotic dynamics of the van der Pol-Duffing oscillator subjected to periodic external and parametric excitations with delayed feedbacks are investigated both analytically and numerically in this manuscript.With the Me...; 关键词：Van der Pol-Duffing oscillator time delay CHAOS parametric excitation Melnikov method

Projective synchronization of a nonautonomous delayed neural networks with Caputo derivative: 《International Journal of Biomathematics》2024年第7期241-272,共32页Changyou Wang Zongxin Lei Lili Jia Yuanhua Du Qiuyan Zhang Jun Liu; supported by the General Projects of Local Science and Technology Development Funds Guided by the Central Government(Grant No.2022ZYD0005);the Key Project of Scientific Research and Innovation Team of Chengdu University of Information Technology(Grant No.KYTD202226);the Natural Science Foundation of Sichuan Province(Grant Nos.2022NSFSC0462 and 2023NSFSC007);the National Natural Science Foundation of China(Grant No.11901063).; In this paper,the projective synchronization problem of nonautonomous neural networks with time delay and Caputo derivative is researched.First,by introducing time delay and variable coefficient into the known neural ...; 关键词：Time delay Caputo derivative NONAUTONOMOUS neural network projective synchronization

DYNAMIC ANALYSIS OF A TYPE OF FINANCIAL RISK CONTAGION MODEL INVOLVING IMMUNITY PERIOD AND SELF-RESCUE: 《数学杂志》2024年第5期413-425,共13页ZHANG Shuang-hui WANG Hai-xia XU Hui-ling; Supported by National Natural Science Foundation of China(12272062).; In this paper,we study the dynamics of a Susceptible-Exposed-Infectious-Recovered(SEIR)nancial risk contagion model with time delay.Using stability theory and Hopf bifurcation theory,equilibria stability and Hopf bifu...; 关键词：nancial risk contagion SELF-RESCUE time delay Hopf bifurcation

Bifurcation and Stability Analysis of Time-Delayed Wheelset System under White Noise Excitation: 《Wuhan University Journal of Natural Sciences》2024年第5期419-429,共11页WANG Xinyang ZHANG Jiangang; Supported by the National Natural Science Foundation of China (61863022);the Key Project of Gansu Province Natural Science Foundation(23JRRA882)。; Considering the impact of time delay in the lateral stiffness of the primary suspension and stochastic disturbances of equivalent conicity on the wheelset system, a stochastic time-delayed wheelset system is establish...; 关键词：wheelset system time delay central manifold stochastic stability stochastic bifurcation

Time-delay Correction Control Strategy for HVDC Frequency Regulation Services: 《CSEE Journal of Power and Energy Systems》2024年第5期2027-2037,共11页Yuqing Dong Kaiqi Sun Jinning Wang Shunliang Wang He Huang Tianqi Liu Yilu Liu; supported by National Natural Science Foundation of China(51977135,52207119).; With the advancements in voltage source converter(VSC)technology,VSC based high voltage direct current(VSCHVDC)systems provide system operators with a prospective approach to enhance system operating stability and res...; 关键词：Frequency regulation control HVDC small signal analysis time delay time-delay correction control strategy

Analysis and Optimization of Boost Converter Parameters in Internal Model Control for Voltage Source Converter-based AC Microgrids: 《CSEE Journal of Power and Energy Systems》2024年第5期2038-2054,共17页Chiebuka Eyisi Qifeng Li; supported by the U.S.National Science Foundation under Grant#2124849.; This paper investigates integration of distributed energy resources(DERs)in microgrids(MGs)through two-stage power conversion structures consisting of DC-DC boost converter and DC-AC voltage source converter(VSC)subsy...; 关键词：AC microgrid boost converter DEAD-TIME droop control internal model control particle swarm optimization small-signal analysis time delay virtual impedance voltage source converter

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