全域通過回路の遅延特性の近似について

概要

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This paper is concerned with the design of delay equalizer's transfer function in the z-domain. Proposed approximation method is based on the s-z transformation method using the Pade expansion of exp(sT). It is assumed that the s-domain transfer function having the desired delay characteristic is given. The coefficients of the transfer function in the z-domain are determined uniquely from the coefficients of the transfer function in the s-domain. The transfer function in the z-domain is all-pass function if and only if the transfer function in the s-domain is all-pass function. The approximation error formula is derived by which the order of the transfer function in the z-domain can be determined. Furthermore, the stability of the transfer function is considered. A design example is shown to illustrate the effectiveness of our method.
東海大学の論文