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Supervisory adaptive fault‐tolerant control against actuator failures with application to an aircraft
Author(s) -
Ouyang Hupo,
Lin Yan
Publication year - 2017
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.3883
Subject(s) - control theory (sociology) , actuator , supervisory control , controller (irrigation) , compensation (psychology) , control reconfiguration , fault tolerance , tracking error , adaptive control , nonlinear system , scheme (mathematics) , transient (computer programming) , control engineering , computer science , bounded function , control (management) , stability (learning theory) , fault (geology) , engineering , mathematics , artificial intelligence , distributed computing , psychology , mathematical analysis , physics , geology , psychoanalysis , agronomy , biology , embedded system , operating system , quantum mechanics , machine learning , seismology
Summary In this paper, a supervisory adaptive fault‐tolerant control scheme is proposed for a class of uncertain nonlinear systems with multiple inputs. The multiple inputs are the outputs of an actuator group that may act either on one control surface or on multiple control surfaces and may fail during operation. With some actuator groups as backups, the supervisory adaptive control includes 2 modes: the adaptive compensation mode and the switching mode. The former is used to compensate for the failure of an actuator group as long as at least one actuator of the group works normally, and the latter, to switch the controller from a failed group to a healthy one when the failure is detected by one of the monitoring functions that are constructed to supervise some variables related to system stability. It is shown that with the proposed scheme, all signals of the closed‐loop system are bounded, and prescribed transient and steady state performance of the tracking error can be guaranteed. An aircraft example is used to demonstrate the application of the proposed scheme.