Open AccessMemoryless state observer-based adaptive control for uncertain nonlinear systems with multiple time delays
Author(s) -
Peng Guo,
Hui Huang,
Guorong Liu,
Jinglu Hu
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.5925
Subject(s) - control theory (sociology) , nonlinear system , upper and lower bounds , computer science , observer (physics) , state (computer science) , adaptive control , state observer , controller (irrigation) , lyapunov function , mathematics , control (management) , algorithm , physics , quantum mechanics , artificial intelligence , agronomy , biology , mathematical analysis
In this paper,the problem of adaptive control based on memoryless state observer is considered for uncertain nonlinear systems with multiple time delays. The upper bound of the time-delay state disturbance is unknown. And an adaptive law is proposed to estimate the unknown parameter of the disturbance,and the estimated value is used to design a memoryless state observer and controller,which are both independent of time-delay. Based on the Lyapunov-Krasovskii function,it is shown that the observation error can converge asymtotically to zero. Simulation results illustrate the applicability of this method.