Simultaneous sampling by digital phase correction

Author

Luengo-García, David ; Pantaleón-Prieto, Carlos ; Santamaría-Caballero, Ignacio ; Ibanez-Díaz, Jesus ; Gómez-Cosío, Enrique

Author_Institution

Dpto. Ingenieria de Commun., Cantabria Univ., Santander, Spain

Volume

2

fYear

1997

fDate

19-21 May 1997

Firstpage

980

Abstract

Phase correction by digital filtering is a common approach to achieve simultaneous sampling with no additional hardware. In this paper we obtain a bound for the interpolation error as a function of the oversampling ratio of the input signal and the interpolation filter order. This bound can be used to analyze and design simultaneous sampling systems by digital phase correction. The obtained theoretical results are validated through simulation. Finally, a vibration analysis system using this technique is described

Keywords

error analysis; filtering theory; interpolation; signal sampling; vibration measurement; digital filtering; digital phase correction; interpolation error; interpolation filter; multichannel acquisition; oversampling ratio; phase compensation; simulation; simultaneous sampling; vibration analysis; Data acquisition; Delay; Digital filters; Equations; Hardware; Interpolation; Performance analysis; Phase distortion; Sampling methods; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE

Conference_Location

Ottawa, Ont.

ISSN

1091-5281

Print_ISBN

0-7803-3747-6

Type

conf

DOI

10.1109/IMTC.1997.610287

Filename

610287