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Sliding mode observers for robust detection and reconstruction of actuator and sensor faults
Author(s) -
Tan Chee Pin,
Edwards Christopher
Publication year - 2003
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.723
Subject(s) - actuator , fault detection and isolation , control theory (sociology) , mode (computer interface) , computer science , robust control , fault (geology) , control engineering , engineering , artificial intelligence , control system , control (management) , geology , seismology , electrical engineering , operating system
Abstract This paper describes a method for designing sliding mode observers for detection and reconstruction of actuator and sensor faults, that is robust against system uncertainty. The method uses ℋ ∞ concepts to design the sliding motion so that an upper bound on the effect of the uncertainty on the reconstruction of the faults will be minimized. The design method is first applied to the case of actuator faults, and then by some appropriate filtering, the method is extended to the case of sensor faults. A VTOL aircraft example taken from the fault detection literature is used to demonstrate the method and its effectiveness. Copyright © 2003 John Wiley & Sons, Ltd.