Moment Matching Model Order Reduction in Time-Domain Via Laguerre Series
نویسندگان
چکیده
A new time-domain model order reduction method based on the Laguerre function expansion of the impulse response is presented. The Laguerre coefficients of the impulse response of the reduced-order model, which is calculated using a projection whose matrices form basis of appropriate Krylov subspaces, match, up to a given order, those of the original system. In addition, it is shown that the obtained reduced-order model in time-domain, is equivalent to the one obtained by the classical moment matching around a single expansion point in frequencydomain. Accordingly, a new time-domain interpretation for the rational interpolation problem is deduced.
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