REDUCED-ORDER MODELLING TECHNIQUES BASED ON STATEVARIABLE SPACE AND THEIER USEIN CIRCUIT DIAKOPTIC ANALYSIS

摘要

In this paper we present some new tearing techniques to systematically formulate the staternequations in symbolic normal-form for linear and/or nonlinear time-invariant large-scale analogrncircuits. The excess elements of the first and of the second kind are unitarily treated in order to allowrna symbolic representation of the circuit with a minimum number of state variables. It is also presentedrna procedure to reduce, for each subcircuit, the state equation number. The reduced-order is based onrnthe using of an implicit integrated algorithm and on the successive elimination of the imposed staternvariables. Some examples are given to illustrate the decomposition procedure, the assignment of thernconnection sources and the reduce-order techniques.