A New Method Of Order Reduction For High Order Interval Systems Using Least Squares Method

摘要

The paper presents the application of Least Squares moment matching method about a general point ?a? for the reduction of high order Interval systems. A heuristic criteria have been employed for selecting the linear shift point ?a? based upon the harmonic mean of real parts of the poles of four high order fixed systems obtained by Kharitonov?s Theorem. The denominator polynomials are obtained by least square method and the numerator are obtained using the moment matching .A numerical example illustrates the proposed procedure