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TitleYam parameterization based on mass analysis
Author(s)Carvalho, Vítor
Pinto, J. G.
Monteiro, João L.
Vasconcelos, Rosa
Soares, Filomena
KeywordsYarn eveness
Capacitive sensor
Signal processing
Spectral analysis
yam evenness
Yarn evenness
Issue date11-Jun-2004
JournalSensors and Actuators A: Physical
Citation“Sensors and Actuators A”. ISSN 0924-4247. 115 (June 2004) 540-548.
Abstract(s)The aim of this paper is to present a new experimental procedure to evaluate yarn characteristics, in real time, using capacitive sensors with a width below 8 mm (commercial equipments use 8 mm sensors). The new approach allows a direct measurement in 1 mm range (increasing resolution eight times). Using software modules developed in this project, all yarn parameters commonly used in industry are evaluated, often with different percentiles. These percentiles are defined interactively with the operator. To increase the textile assessment of the yarn, new parameters were developed (integral deviation rate (IDR), fast fourier transform (FFT)-based analysis) and others were adapted (deviation rate (DR), spectrogram). The final goal of the current project is to allow real time actuation on a ring spinning frame, based on the previous analysis of the yarn. This allows on-line control of the production according pre-defined quality requirements.
AccessOpen access
Appears in Collections:CAlg - Artigos em revistas internacionais/Papers in international journals
DEI - Artigos em revistas internacionais
DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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