DocumentCode :
6938
Title :
Vibrations in Steel Strips: Effects on Flatness Measurement and Filtering
Author :
Usamentiaga, Ruben ; Garcia, Diego ; Molleda, Julio ; Bulnes, Francisco G. ; Bonet Brana, Gabriel
Author_Institution :
Dept. of Comput. Sci. & Eng., Univ. of Oviedo, Oviedo, Spain
Volume :
50
Issue :
5
fYear :
2014
fDate :
Sept.-Oct. 2014
Firstpage :
3103
Lastpage :
3112
Abstract :
Vibrations are periodic or random motion from an equilibrium position. In the steel industry, vibrations are an undesirable phenomenon, as they waste energy and create unwanted noise. For example, vibrations affect steel strips during rolling and transportation, producing random or periodic vertical movements of the strips as they move forward along a roll path. The consequences of these vibrations are particularly harmful for 3-D reconstruction and flatness measurement based on non-contact techniques. Vibrations corrupt the height profiles, causing an erroneous reconstruction of the 3-D surface. The flatness measurement is also distorted because the estimated lengths of the strip fibers with vibrations are different. This paper analyzes how vibrations in steel strips affect flatness measurement, and proposes methods to remove or reduce these effects. The shape of steel strips is firstly modeled including the two most common flatness defects: wavy edges and center buckle. Then, different types of vibrations are added to the strip models, and their effects on the resulting flatness measurement are analyzed. The method proposed to reduce the effects of vibrations is a combination of a low-pass filter and geometric transformations. Finally, these methods are applied to data from real strips.
Keywords :
low-pass filters; steel; steel industry; strips; surface topography measurement; vibrations; center buckle; flatness defect; flatness measurement; geometric transformation; low-pass filter; steel industry; steel strips; strip model; vibrations; waste energy; wavy edges; Manuals; Measurement errors; Steel; Strips; Vibration measurement; Vibrations; Wavelength measurement; Flatness measurement; steel rolling; vibrations;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2014.2308359
Filename :
6748979
Link To Document :
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