Application of Discrete Fourier Transform (DFT) in the Process of Knitting

Authors

  • Miroslav Srdjak Faculty of Textile Technology University of Zagreb, Department of Textile Mechanical Technology, Zagreb, Croatia
  • Ante Graovac »Ruđer Bošković« Institute, Zagreb, Croatia

Abstract

The influence of knitting machine characteristics and yarn properties upon the tensions occuring in yarn during knitting has been investigated. The process has been dynamically analysed employing frequency analysis. There grade of cotton yarn fineness and two of wool yarn have been used in the experiment. Signal analysis has been done numerically, using Discrete Fourier Transform (DFT), which results in force signals with one-sided and double-sided spectrum. Some characteristic signals have been presented using appropriate DFT, so the influence of yarn and package quality, cam shape and manner of yarn feeding to the knitting elements on signal spectrum in quite obvious. 'University of Zagreb, Faculty of Textile Technology

Downloads

Published

1997-06-30

Issue

Vol. 46 No. 6 (1997)

Section

Original scientific paper

License

Copyright (c) 1997 Hrvatski inženjerski savez tekstilaca

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
Srdjak, M. and Graovac, A. 1997. Application of Discrete Fourier Transform (DFT) in the Process of Knitting. Tekstil. 46, 6 (Jun. 1997), 307–314.