文献类型：期刊文献

英文题名：Novel Extended State Observer Design for Uncertain Nonlinear Systems via Refined Dynamic Event-Triggered Communication Protocol

作者：Li, Zhichen[1];Yan, Huaicheng[1,2];Zhang, Hao[3];Yang, Simon X.[4];Chen, Mengshen[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Smart Mfg Energy Chem Proc, Shanghai 200237, Peoples R China;[2]Chengdu Univ, Sch Informat Sci & Engn, Chengdu 610106, Peoples R China;[3]Tongji Univ, Dept Control Sci & Engn, Shanghai 200092, Peoples R China;[4]Univ Guelph, Sch Engn, Guelph, ON N1G 2W1, Canada

年份：2023

卷号：53

期号：3

起止页码：1856

外文期刊名：IEEE TRANSACTIONS ON CYBERNETICS

收录：;EI(收录号：20221712038638);WOS:【SCI-EXPANDED(收录号:WOS:000785747700001)】；

基金：This work was supported in part by the National Natural Science Foundation of China under Grant 62173146, Grant 62073143, Grant 61922063, and Grant 62003139; in part by the Shanghai Natural Science Foundation under Grant 22ZR1416200 and Grant 20ZR1415200; in part by the Program of Shanghai Academic Research Leader under Grant 19XD1421000; in part by the Shanghai and Hong Kong-Macao-Taiwan Science and Technology Cooperation Project under Grant 19510760200; in part by the Shanghai Shuguang Project under Grant 18SG18; and in part by the Innovation Program of Shanghai Municipal Education Commission under Grant 2021-01-07-00-02-E00107. This article was recommended by Associate Editor Y. Xiao.

语种：英文

外文关键词：Observers; Protocols; Uncertainty; Nonlinear dynamical systems; Lyapunov methods; Estimation error; Bandwidth; Dynamic event-triggered (DET) protocol; exponential convergence; limited network bandwidth; Takagi-Sugeno fuzzy extended state observer (TSFESO); uncertain nonlinear systems

摘要：In this article, an extended state observer (ESO) design problem is investigated for uncertain nonlinear systems subject to limited network bandwidth. First, for rational information exchange scheduling, a dynamic event-triggered (DET) communication protocol is proposed. Different from the traditional static event-triggered strategies with fixed thresholds, an internal dynamic variable is introduced to be adaptively adjusted by a dual-directional regulating mechanism. Thus, more desirable tradeoff between observation performance and communication resource efficiency is achieved. Second, inspired by our early work on Takagi-Sugeno fuzzy ESO (TSFESO), a novel paradigm of event-triggered TSFESO is initially proposed. Third, under the DET mechanism, the TSFESO design approach is derived to carry out exponential convergence for estimation error dynamics. Finally, the effectiveness of the proposed method is verified by numerical examples. The nonlinear estimating efficiency and linear numerical tractability are integrated in TSFESO. In addition, a generalized ESO formulation is developed to allow some nonadditive uncertainties incompatible with total disturbance, such as improved event-triggered strategy, and thus, the application sphere of ESO is further expanded.