TY - JOUR
T1 - Recursive back-stepping design of an adaptive fuzzy controller for strict output feedback nonlinear systems
AU - Wang, Wei Yen
AU - Chan, Mei Lang
AU - Lee, Tsu Tian
AU - Liu, Cheng Hsin
PY - 2002/9
Y1 - 2002/9
N2 - A back-stepping adaptive fuzzy controller is proposed for strict output feedback nonlinear systems. The unknown nonlinearity and external disturbances of such systems are considered. We assume that only the output of the system is available for measurement. As a result, two filters are constructed to estimate the states of strict output feedback systems. Since fuzzy systems can uniformly approximate nonlinear continuous functions to arbitrary accuracy, the adaptive fuzzy control theory combined with a tuning function scheme is developed to derive the control laws of strict output feedback systems that possess unknown functions. Moreover, the H∞ performance condition is introduced to attenuate the effect of the modeling error and external disturbances. Finally, an example is simulated in order to confirm the applicability of the proposed method.
AB - A back-stepping adaptive fuzzy controller is proposed for strict output feedback nonlinear systems. The unknown nonlinearity and external disturbances of such systems are considered. We assume that only the output of the system is available for measurement. As a result, two filters are constructed to estimate the states of strict output feedback systems. Since fuzzy systems can uniformly approximate nonlinear continuous functions to arbitrary accuracy, the adaptive fuzzy control theory combined with a tuning function scheme is developed to derive the control laws of strict output feedback systems that possess unknown functions. Moreover, the H∞ performance condition is introduced to attenuate the effect of the modeling error and external disturbances. Finally, an example is simulated in order to confirm the applicability of the proposed method.
KW - Adaptive fuzzy control
KW - Recursive back-stepping design
KW - Strict output feedback system
UR - http://www.scopus.com/inward/record.url?scp=0036759770&partnerID=8YFLogxK
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U2 - 10.1111/j.1934-6093.2002.tb00353.x
DO - 10.1111/j.1934-6093.2002.tb00353.x
M3 - Article
AN - SCOPUS:0036759770
SN - 1561-8625
VL - 4
SP - 255
EP - 264
JO - Asian Journal of Control
JF - Asian Journal of Control
IS - 3
ER -