Parallel extended state observer based control for uncertain nonlinear systems

被引：1

作者：

Zhang, Xilian ^{[1
]}

Xu, Tao ^{[2
,3
]}

Zhang, Zhao ^{[1
]}

Duan, Zhisheng ^{[1
]}

机构：

[1] Peking Univ, Coll Engn, Dept Mech & Engn Sci, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China

[2] Beijing Inst Technol, Sch Mechatron Engn, Beijing 100081, Peoples R China

[3] Beijing Inst Technol, Yangtze Delta Reg Acad, Jiaxing 314019, Zhejiang, Peoples R China

来源：

NEUROCOMPUTING | 2023年 / 557卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Uncertain systems; Extended state observer; Parallel structure; Linear tracking differentiator; Disturbance rejection; PERFORMANCE ANALYSIS; ADAPTIVE-CONTROL; TRACKING CONTROL; CONVERGENCE; PARAMETER;

D O I：

10.1016/j.neucom.2023.126687

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this paper, a parallel extended state observer (PESO) is proposed by merging a series of different order linear tracking differentiators and first-order nonlinear differentiators. Both measurement noises and system uncertainties are taken into account in design procedures. A distinct feature of the parallel structure is that the observed information of each part is independent of each other, which effectively avoids the accumulation of the observation error of each part. The PESO is utilized to estimate the total disturbance, which reflects the combined impacts of internal uncertainties and external disturbances. Based on the observation results generated by the PESO, a composite controller is developed for output feedback control of uncertain nonlinear systems. The convergence performance of the proposed PESO and PESO-based controller is rigorously verified. Finally, some numerical simulation results are provided to verify the effectiveness and superiority of the proposed method.

引用

页数：13

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