As was shown in Chapter 1, in most cases the beginning of a defect’s origin reflects in signals \(g\left( {i\Delta t} \right)\) collected from sensors as a high-frequency noise. Therefore, for monitoring the defect at the beginning of its origin, it is necessary to extract the information in the noise. In this chapter, one of the possible variants for this problem is considered.
It is known that in traditional technologies for eliminating noise (noise) influence on the results of problems, methods of filtration are often used. They give good results when the spectrum of the filter coincides with the spectrum of the noise. At the same time, for many real processes the spectrum and variance of the noise change in time in a wide range and classical conditions are not fulfilled. For these reasons for eliminating noise influence on the result of signal processing, one has to enlarge the range of a “filter” spectrum. In its turn, it distorts the legitimate signal much more.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Rights and permissions
Copyright information
© 2007 Springer Science+Business Media, LLC
About this chapter
Cite this chapter
(2007). Technology of Digital Analysis of Noise as a Carrier of Information about the Beginning of a Defect's Origin. In: Digital Noise Monitoring of Defect Origin., vol 2. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-71754-8_3
Download citation
DOI: https://doi.org/10.1007/978-0-387-71754-8_3
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-71753-1
Online ISBN: 978-0-387-71754-8
eBook Packages: EngineeringEngineering (R0)