Patent ID: 6188974
Filing Date: 2001-02-13
Classification: G06F

Abstract:
A computer implemented method comprising:representing an original physical system comprising time delays as an original linear circuit model having a time domain formulation of ##EQU6##where C, C.sub.k,m and G, G.sub.i,j are n.times.n where n is the order of the system, B is n.times.q where q is the number of variables and E is o.times.n where o is the number of output variables;transforming the original linear circuit model into a corresponding original transform domain circuit model having a transfer function represented by the formulay(s)/u(s)=H(s)=E(s)(A(s)).sup.-1 B(s)where ##EQU7##B(s)=B and E(s)=E, and H(s) is a matrix of rational functions of s;locally approximating the original transform circuit model by a system without time delays, thereby generating at least one localized representation of the original system;applying an iterative method to each localized representation of the original system, for identifying local characteristics of the original system; andcombining the identified local characteristics to obtain a reduced order model for the original system.