On Convergence of Extended State Observer for a Class of MIMO Uncertain Stochastic Nonlinear Systems

doi:10.1109/ACCESS.2018.2849199

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	On Convergence of Extended State Observer for a Class of MIMO Uncertain Stochastic Nonlinear Systems
	Wu, Zehao 1; Huang, Guoshun 1; Wu, Chufen 1; Lv, Chunwan 1; Bao, Lingxin 2,3
	2018
发表期刊	IEEE ACCESS
ISSN	2169-3536
卷号	6 页码:37758-37766
摘要	Extended state observer (ESO) is the key part of active disturbance rejection control, a new control strategy motivated and developed highly from PID's model-free feature. In this paper, both constant gain ESO and time-varying gain ESO are proposed for a class of multi-input multi-output uncertain stochastic nonlinear systems subject to vast stochastic uncertainties. The total stochastic uncertainties in each subsystem including unmodeled dynamics, unknown stochastic inverse dynamics, external stochastic disturbance without known statistical characteristics, and uncertain nonlinear interactions between subsystems are regarded as the stochastic total disturbance (extended state) of each subsystem of the plant. The constant gain ESO and time-varying gain ESO are designed for the estimation of not only the unmeasured state but also the stochastic total disturbance of each subsystem in real time, and the corresponding mean square convergence of these two classes of ESOs are developed rigorously. Some numerical simulations are presented to demonstrate the effectiveness of estimation by ESO approach and the peaking value reduction by the time-varying gain ESO.
关键词	Extended state observer active disturbance rejection control MIMO systems stochastic uncertainties convergence
DOI	10.1109/ACCESS.2018.2849199
语种	英语
资助项目	Natural Science Foundation of China[11501108] ; Natural Science Foundation of Guangdong Province[2015A030313636] ; Project of Department of Education of Guangdong Province[2017KTSCX191] ; Project of Department of Education of Guangdong Province[2017KZDXM087] ; Project of Department of Education of Guangdong Province[2017KQNCX209]
WOS研究方向	Computer Science ; Engineering ; Telecommunications
WOS类目	Computer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000439699300002
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/33392
专题	中国科学院数学与系统科学研究院
通讯作者	Bao, Lingxin
作者单位	1.Foshan Univ, Sch Math & Big Data, Foshan 528000, Peoples R China 2.Fujian Agr & Forestry Univ, Sch Comp & Informat, Fuzhou 350002, Fujian, Peoples R China 3.Chinese Acad Sci, Acad Math & Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wu, Zehao,Huang, Guoshun,Wu, Chufen,et al. On Convergence of Extended State Observer for a Class of MIMO Uncertain Stochastic Nonlinear Systems[J]. IEEE ACCESS,2018,6:37758-37766.
APA	Wu, Zehao,Huang, Guoshun,Wu, Chufen,Lv, Chunwan,&Bao, Lingxin.(2018).On Convergence of Extended State Observer for a Class of MIMO Uncertain Stochastic Nonlinear Systems.IEEE ACCESS,6,37758-37766.
MLA	Wu, Zehao,et al."On Convergence of Extended State Observer for a Class of MIMO Uncertain Stochastic Nonlinear Systems".IEEE ACCESS 6(2018):37758-37766.