Generalized low-frequency stochastic true RMS instrument

Author

Vujicic, Vladimir

Author_Institution

Fac. of Eng., Novi Sad Univ., Serbia

Volume

50

Issue

5

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1089

Lastpage

1092

Abstract

The instrument, described in the paper, represents a generalization of the low-frequency stochastic true RMS instrument. The generalization consists of replacing the input two-bit A/D flash converters with m-bit flash A/D converters, and replacing the two-bit multiplier-accumulator with an m-bit multiplier-accumulator. In this generalized case, the stochastic impact decreases, while the deterministic impact increases, causing the theory of operation to be more complicated. A complete theory of operation is also developed. Simulations strongly confirm this theory. It is shown that this generalization is equivalent, even in the case of a 5-bit instrument, to acceleration of, at least, 450 times over the instrument previously described

Keywords

analogue-digital conversion; digital instrumentation; measurement errors; multiplying circuits; 5 bit; deterministic impact; dithering; m-bit flash A/D converters; m-bit multiplier-accumulator; stochastic impact; stochastic true RMS instrument; Acceleration; Frequency; Hardware; Helium; Instruments; Performance evaluation; Probability density function; Standards development; Stochastic processes; Velocity measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.963164

Filename

963164