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Adaptive fault tolerant control for a class of uncertain fractional‐order systems based on disturbance observer
Author(s) -
Hou Chuanjing,
Liu Xiaoping,
Wang Huanqing
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.4950
Subject(s) - control theory (sociology) , actuator , nonlinear system , disturbance (geology) , convergence (economics) , observer (physics) , fault tolerance , computer science , scheme (mathematics) , control (management) , control engineering , engineering , mathematics , artificial intelligence , distributed computing , paleontology , physics , quantum mechanics , economics , biology , economic growth , mathematical analysis
Summary In this paper, a class of fractional‐order nonlinear systems are considered in the presence of actuator faults. A novel fault tolerant control scheme based on disturbance observer has been presented, where the actuator faults are considered as the system disturbance and can be approximated by the proposed disturbance observer. The developed fault tolerant control guarantees the convergence of the closed‐loop system and the output tracking performance. Finally, a simulation example is presented to verify the effectiveness of the new method.