Continuous-time to discrete-time conversion via a novel parametrized s-to-z-plane mapping

Author

Melvin, William L. ; Frey, Douglas R.

Author_Institution

Signal Process. Branch, US Air Force Rome Lab., NY, USA

Volume

44

Issue

10

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

829

Lastpage

834

Abstract

A parametrized s-to-z-plane map is introduced, where the conventional bilinear map and backward and forward Euler rules appear as special cases. Time and frequency-domain characteristics of the map are discussed, along with a simple technique for applying this map to adaptively reduce truncation error in the continuous-time to discrete-time conversion problem. An example illustrates the method and its potential for yielding more accurate discrete-time models over conventional approaches

Keywords

continuous time systems; discrete time systems; frequency-domain analysis; stability; time-domain analysis; backward Euler rules; bilinear map; continuous-time/discrete-time conversion; discrete-time models; forward Euler rules; frequency-domain characteristics; parametrized s-to-z-plane mapping; time-domain characteristics; truncation error; Control systems; Digital signal processing; Equations; Finite wordlength effects; Frequency measurement; Frequency response; Navigation; Robot control; Sampling methods; Signal sampling;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.633441

Filename

633441