TY - JOUR
T1 - Adaptive output-feedback stabilisation of an uncertain second-order linear systems
AU - Aguilar-Ibanez, Carlos
AU - Acosta, José Ángel
AU - Martinez-Garcia, Juan C.
AU - García-Canseco, Eloísa
N1 - Publisher Copyright:
Copyright © 2016 John Wiley & Sons, Ltd.
PY - 2017/5
Y1 - 2017/5
N2 - The adaptive stabilisation of uncertain second-order linear systems is addressed, under a lack of information from both states and parameters. The only standard assumptions are no zeros and the sign of the high frequency gain known. To the best of the authors' knowledge, there has been only an explicit solution proposed in the literature so far with proven stability. Despite the simplicity of the system, it does not fit in any of the standard nonlinear control methodologies available. Thus, this work is a complementary contribution providing a mixed control design strategy based on a reduced-order observer, adaptive Immersion & Invariance and Backstepping approaches. Hence, this solution depicts a transversal outlook of those nonlinear control strategies and provides a breakthrough for the generalisation of this non-trivial control problem. Numerical simulations are reported to assess the effectiveness of the adaptive strategy.
AB - The adaptive stabilisation of uncertain second-order linear systems is addressed, under a lack of information from both states and parameters. The only standard assumptions are no zeros and the sign of the high frequency gain known. To the best of the authors' knowledge, there has been only an explicit solution proposed in the literature so far with proven stability. Despite the simplicity of the system, it does not fit in any of the standard nonlinear control methodologies available. Thus, this work is a complementary contribution providing a mixed control design strategy based on a reduced-order observer, adaptive Immersion & Invariance and Backstepping approaches. Hence, this solution depicts a transversal outlook of those nonlinear control strategies and provides a breakthrough for the generalisation of this non-trivial control problem. Numerical simulations are reported to assess the effectiveness of the adaptive strategy.
KW - adaptive immersion
KW - backstepping
KW - invariance
KW - output feedback
KW - reduced order observer
KW - uncertain linear systems
UR - http://www.scopus.com/inward/record.url?scp=84991489869&partnerID=8YFLogxK
U2 - 10.1002/acs.2735
DO - 10.1002/acs.2735
M3 - Artículo
SN - 0890-6327
VL - 31
SP - 823
EP - 832
JO - International Journal of Adaptive Control and Signal Processing
JF - International Journal of Adaptive Control and Signal Processing
IS - 5
ER -