Title :
The influence of noise in on-line frequency response estimation using a multifrequency ternary periodic signal
Author :
McGlone, P. ; El-Fandi, M. ; Henderson, I.A. ; McGhee, J.
Author_Institution :
Ind. Control Unit, Strathclyde Univ., Glasgow, UK
Abstract :
This paper investigates the affect of input and output noise in an on-line multifrequency measurement of a linear system. A multifrequency periodic ternary signal and a recursive algorithm, which have been introduced by the authors, are used. The results show that measurement can still be achieved in the presence of noise contamination, in either, or both of the input and output channels. The quality of measurement is extremely gratifying and only begins to suffer when the higher frequency harmonics on the output channel are subjected to vigorous noise. This reaction can be accounted for by signal-to-noise ratio criticality
Keywords :
frequency response; harmonic distortion; linear systems; measurement theory; recursive estimation; spectral analysis; transfer functions; SISO system; computer simulation; first order system; higher frequency harmonics; input noise; linear system; measurement quality; multifrequency ternary periodic signal; noise contamination; noise influence; on-line frequency response estimation; on-line multifrequency measurement; output noise; recursive algorithm; signal-to-noise ratio criticality; transfer function; Contamination; Frequency estimation; Frequency measurement; Frequency response; Hydrogen; Linear systems; Noise measurement; Pollution measurement; Signal analysis; Signal processing algorithms;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.848859
