Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/42654

TítuloYarn periodical errors determination using three signal processing approaches
Autor(es)Carvalho, Vítor
Belsley, M.
Vasconcelos, Rosa
Soares, Filomena
Palavras-chaveYarn periodical errors
Yarn irregularities
Yarn hairiness
Walsh – Hadamard
Impulse frequency determination
Data2013
RevistaDigital Signal Processing: a Review Journal
Resumo(s)This paper presents a study developed for identifying the type and location of yarn periodical errors applying three different signal processing approaches based on FFT – Fast Fourier Transform, FWHT – Fast Walsh – Hadamard Transform and FDFI – Fast Impulse Frequency Determination. Commercial equipment uses exclusively a FFT approach which is not able to clearly detect other yarn periodical types of errors, especially impulse errors. The theoretical description of each signal processing technique is presented, as well as their application to several simulated errors, namely, sinusoidal errors, rectangular errors, pulse errors and impulse errors.
Tipoarticle
URIhttp://hdl.handle.net/1822/42654
DOI10.1016/j.dsp.2013.06.003
Arbitragem científicayes
AcessoopenAccess
Aparece nas coleções:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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