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Determining Frequency and Impulse Response Using Asymmetrical Pulses

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1 Author(s)
Blair, J.J. ; Bechtel Nevada

A method is presented and analyzed for determining the impulse response and frequency response of a system using an asymmetrical stimulus signal. The considered signal is a pulse with a rapid first transition, followed by a nearly constant region followed by a second transition that is much slower than the first. The advantage of such a signal is that, unlike a symmetric pulse, its Fourier transform has no zeros. This allows one to divide by the Fourier transform in the data analysis. It is shown that such a pulse retains the advantages of using an impulse-like or step-like stimulus. Error estimates similar to those previously published for impulse-like and step-like stimuli are given for the asymmetric stimulus

Published in:

Instrumentation and Measurement Technology Conference, 2005. IMTC 2005. Proceedings of the IEEE  (Volume:3 )

Date of Conference:

16-19 May 2005