TIME-DELAY_SYSTEMS

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Relaxed Stability Criteria for Time-Delay Systems:A Novel Quadratic Function Convex Approximation Approach
《IEEE/CAA Journal of Automatica Sinica》2024年第4期996-1006,共11页Shenquan Wang Wenchengyu Ji Yulian Jiang Yanzheng Zhu Jian Sun 
the National Natural Science Foundation of China(62273058,U22A2045);the Key Science and Technology Projects of Jilin Province(20200401075GX);the Youth Science and Technology Innovation and Entrepreneurship Outstanding Talents Project of Jilin Province(20230508043RC)。
This paper develops a quadratic function convex approximation approach to deal with the negative definite problem of the quadratic function induced by stability analysis of linear systems with time-varying delays.By i...
关键词:Equivalent reciprocal combination technique quadratic function convex approximation approach STABILITY timevarying delay 
Global output feedback control of feedforward nonlinear time-delay systems with unknown growth rate and unknown measurement sensitivity
《Control Theory and Technology》2024年第1期122-134,共13页Weiyong Yu Keao Gao Hongbing Zhou Qiang Liu 
supported by the fund of Beijing Municipal Commission of Education(Nos.22019821001 and KM202210017001);the Natural Science Foundation of Henan Province(No.222300420253).
This paper discusses the problem of global state regulation via output feedback for a class of feedforward nonlinear time-delay systems with unknown measurement sensitivity. Different from previous works, the nonlinea...
关键词:Adaptive control Dynamic gain controllers Feedforward time-delay systems Measurement sensitivity Output feedback 
A FAS approach for stabilization of generalized chained forms:part 1.Discontinuous control laws被引量:2
《Science China(Information Sciences)》2024年第2期114-139,共26页Guang-Ren DUAN 
This work has been partially supported by Shenzhen Key Laboratory of Control Theory and Intelligent Systems(Grant No.ZDSYS20220330161800001);Major Program of National Natural Science Foundation of China(Grant Nos.61690210,61690212);National Natural Science Foundation of China(Grant No.61333003);Science Center Program of the National Natural Science Foundation of China(Grant No.62188101).
In this paper,a type of general nonholonomic systems is proposed,which contains both the Brockett’s two example systems,and their extended n-dimensional chained forms,as special cases.For the stabilization of such sy...
关键词:nonholonomic systems feedback stabilization exponential convergence sub-fully actuated systems time-delay systems 
Stabilization for Discrete-Time Stochastic Systems with Multiple Input Delays
《Journal of Systems Science & Complexity》2023年第5期1961-1980,共20页LI Lin ZHANG Huanshui 
supported by Shandong Provincial Natural Science Foundation of China under Grant Nos.ZR2022MF239 and ZR2021MA002。
A stabilization problem for stochastic systems with multiple input delays is investigated herein.A new method to construct an optimal control problem with input constraints is adopted.A sufficient stabilization condit...
关键词:Riccati-type equations STABILIZATION stochastic systems time-delay systems 
Delay Compensation of Neutral-Type Time-Delay Control Systems by Cascaded-Observers
《Journal of Systems Science & Complexity》2023年第3期1053-1069,共17页LIU Qingsong 
supported by the National Natural Science Foundation of China under Grant Nos. 61903282 and 62173259;China Postdoctoral Science Foundation Funded Project under Grant No. 2020T130488
This paper is concerned with the input delay compensation problem for neutral-type systems with both state and input delays.Single/various cascaded-observers based output feedback controllers are designed to predict t...
关键词:Cascaded-observers input delay compensation neutral-type time-delay systems STABILIZATION state and input delays 
Design and analysis of active disturbance rejection control for time-delay systems using frequency-sweeping
《Journal of Systems Engineering and Electronics》2023年第2期479-491,共13页WANG Yongshuai CHEN Zengqiang SUN Mingwei SUN Qinglin 
supported by the National Natural Science Foundation of China(61973175,61973172,62073177);the Key Technologies R&D Program of Tianjin(19JCZDJC32800);Tianjin Research Innovation Project for Postgraduate Students(2020YJSZXB02).
For the typical first-order systems with time-delay,this paper explors the control capability of linear active disturbance rejection control(LADRC).Firstly,the critical time-delay of LADRC is analyzed using the freque...
关键词:active disturbance rejection control frequencysweeping method critical time-delay Routh criterion system with large time-delay 
Safety guarantee for time-delay systems with disturbances
《Science China(Information Sciences)》2023年第3期114-128,共15页Wenyou LIU Yunjun BAI Li JIAO Naijun ZHAN 
supported by the National Natural Science Foundation of China(Grant Nos.61625206,61732001,61836005,61872341,61972385).
Time delays occur in various engineering applications because they may be inherent in the plants or caused by networks.In this paper,we investigate the safety verification problem of time-delay systems modeled by nonl...
关键词:time-delay systems delay differential equations control barrier functionals controllers SAFETY 
Fully actuated system approaches for continuous-time delay systems: part 2. Systems with input delays被引量:2
《Science China(Information Sciences)》2023年第2期154-171,共18页Guangren DUAN 
supported by Major Program of National Natural Science Foundation of China (Grant Nos. 61690210, 61690212);National Natural Science Foundation of China (Grant No. 61333003);Science Center Program of the National Natural Science Foundation of China (Grant No. 62188101)。
In this paper, the fully actuated system(FAS) approaches for continuous-time systems with time-varying state delays and a constant input delay are presented. Two types of continuous-time high-order FASs are proposed: ...
关键词:time-delay systems fully actuated systems controller designs input delays time-varying delays 
Fully actuated system approaches for continuous-time delay systems:part 1.Systems with state delays only被引量:3
《Science China(Information Sciences)》2023年第1期154-183,共30页Guangren DUAN 
partially supported by Major Program of National Natural Science Foundation of China (Grant Nos.61690210,61690212);National Natural Science Foundation of China (Grant No.61333003);Science Center Program of the National Natural Science Foundation of China (Grant No.62188101)。
In this paper,the fully actuated system(FAS)approaches for continuous-time systems with time-varying state delays are proposed.Two types of continuous-time high-order FAS models with time delays:single-order time-dela...
关键词:time-delay systems fully actuated systems controller designs CONTROLLABILITY STABILIZABILITY 
Discrete-time delay systems:part 2.Sub-fully actuated case被引量:4
《Science China(Information Sciences)》2022年第9期141-155,共15页Guangren DUAN 
partially supported by Major Program of National Natural Science Foundation of China(Grant Nos.61690210,61690212);National Natural Science Foundation of China(Grant No.61333003);Fundamental Science Center Program of National Natural Science Foundation of China(Grant No.62188101)。
In continuation to the first part of the paper,this second part further investigates the models and control of discrete-time sub-fully actuated systems with time-varying delays.Firstly,a new representation for general...
关键词:time-delay systems discrete-time systems sub-fully actuation control designs feasibility 
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