In this paper, robust control for a class of nonlinear large-scale systems
possessing similar subsystems is considered. The unmatched uncertainties co
nsidered may appear not only in the isolated subsystems but also in the int
erconnections. The only information required on the uncertainties is their
bounding functions. By exploiting the similar structure of the large-scale
system, two kinds of discontinuous nonlinear decentralized holographic-stru
cture controllers (DHSCs), which are easily designed compared with general
nonlinear controllers, are proposed to asymptotically stabilize the system.
It is shown that the analysis and synthesis for nonlinear large-scale syst
ems may be simplified using the similar structure. Finally, a numerical exa
mple is given to illustrate the methodology. (C) 1999 Elsevier Science Ltd.
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