Observer based output feedback regulation of a class of feedforward nonlinear systems with uncertain input and state delays using adaptive gain

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We consider a global regulation problem of a class of feedforward nonlinear systems with uncertain delays by output feedback. The considered system is a generalized feedforward time-delay nonlinear system in the sense that an additional uncertain constant delay exists in the main control input to the system and feedforward nonlinearity includes states and input which have uncertain time-varying delays. Moreover, when feedforward nonlinearity satisfies some restrictive condition, we extend our control problem to the case such that the delay in the main control input is also a time-varying delay. To globally regulate the considered system, we develop an output feedback controller whose gain-scaling factor involves an adaptive dynamic. Two examples are given for illustration.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2014-09
Language
English
Article Type
Article
Keywords

GLOBAL ASYMPTOTIC STABILIZATION; H-INFINITY CONTROL; PREDICTOR FEEDBACK; ROBUST STABILIZATION; VARYING DELAYS; LINEAR-SYSTEMS; TIME; INTEGRATOR; CONTROLLERS; STABILITY

Citation

SYSTEMS & CONTROL LETTERS, v.71, pp.44 - 53

ISSN
0167-6911
DOI
10.1016/j.sysconle.2014.06.005
URI
http://hdl.handle.net/10203/192785
Appears in Collection
EE-Journal Papers(저널논문)
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