Premium
Switching‐based state tracking of model reference adaptive control systems in the presence of intermittent failures of all actuators
Author(s) -
Wu Caiyun,
Li Chensong,
Zhao Jun
Publication year - 2014
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/acs.2430
Subject(s) - unavailability , actuator , control theory (sociology) , tracking error , computer science , stability (learning theory) , state (computer science) , tracking (education) , control engineering , control (management) , engineering , reliability engineering , artificial intelligence , psychology , pedagogy , algorithm , machine learning
SUMMARY This paper investigates the state tracking problem for a class of model reference adaptive control systems with intermittent failures of all actuators. We consider the case that all actuators may suffer failures simultaneously. The concepts of failure frequency and unavailability rate are introduced to describe the failures. Because of the actuator failures, the error system is modeled as a switched system. Then, the notion of global practical stability of switched systems is presented, and sufficient conditions are provided to guarantee the global practical stability of the error system. An example of HiMAT vehicle and the simulation results demonstrate the feasibility and effectiveness of the proposed design method. Copyright © 2013 John Wiley & Sons, Ltd.