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Global output feedback regulation of nonlinear time delay systems subject to sensor measurement faults
Author(s) -
Li Kuo,
Hua Changchun,
Guan Xinping
Publication year - 2020
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.4873
Subject(s) - control theory (sociology) , nonlinear system , controller (irrigation) , bounded function , computer science , simple (philosophy) , stability (learning theory) , lyapunov function , control (management) , output feedback , control engineering , mathematics , engineering , mathematical analysis , philosophy , physics , epistemology , quantum mechanics , artificial intelligence , machine learning , agronomy , biology
Summary This article studied the global output feedback regulation problem for a class of uncertain nonlinear time delay systems subject to unknown measurement faults on sensors. Different from the existing works, we consider the unknown time‐varying delays on the system states and relax their conservative condition on nonlinear functions. By introducing two novel time‐varying gains, a new global output feedback regulation algorithm is proposed, which ensures control parameters can be chosen flexibly. The proposed linear‐like controller is independent of the unknown time‐varying delays. Moreover, it has a simple structure, which is convenient for the implementation in practice. Based on the Lyapunov stability theory, it is strictly proved that all signals of the resulting closed‐loop system are globally bounded with the designed controller. Finally, a simulation example is presented to illustrate the effectiveness of the proposed output feedback regulation algorithm.