首页|Global adaptive output-feedback tracking with prescribed performance for uncertain nonlinear systems

Global adaptive output-feedback tracking with prescribed performance for uncertain nonlinear systems

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At present,one typical control strategy for guaranteeing transient and steady-state performance is funnel control and prescribed performance control.The strategy features completely discarding the sys-tem nonlinearities,even if they are completely known and available.Such an intrinsic feature requires the controller to produce a larger control effect to eliminate the negative impact caused by the high nonlinear-ities,leading to a conservative controller.In this paper,we fully take advantage of known information on nonlinearities in control design,instead of completely discarding it as done in funnel control.Particularly,we leverage adaptive techniques(i.e.,high-gain dynamic compensation)to deal with unknown system nonlinear-ities.Meanwhile,we integrate the tools of output feedback,tracking control,and the performance guarantee.As such,an adaptive output-feedback scheme is developed for global tracking with spatiotemporal perfor-mance specifications:arbitrarily given tracking accuracy and accuracy-ensured time.A simulation example supports the developed approach.

uncertain nonlinear systemsoutput feedbackprescribed performanceunknown control direc-tiondynamic high gainglobal tracking

Yuan WANG、Yungang LIU

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School of Control Science and Engineering,Shandong University,Jinan 250061,China

National Natural Science Foundation of ChinaTaishan Scholars Climbing Program of Shandong ProvinceMajor Fundamental Research Program of Shandong Province

62033007ZR2023ZD37

2024

10.1007/s11432-023-3948-y

中国科学:信息科学(英文版)
中国科学院

中国科学:信息科学(英文版)

CSTPCDEI
影响因子：0.715
ISSN：1674-733X
年,卷(期)：2024.67(5)
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