This note presents a method for the reduction of the order of interval system. The denominator of the reduced model is obtained by a direct truncation of the Routh table of the interval system. The numerator is obtained by matching the coefficients of power series expansions of the interval system and its reduced model. A numerical example illustrates the proposed procedure. © 1994 IEEE

Bijnan Bandyopadhyay

Department of Electrical Engineering

IIT Jodhpur

O. Ismail

R. Gorez

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Journal	IEEE Transactions on Automatic Control
ISSN	00189286