Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (11): 162-167.doi: 10.13475/j.fzxb.20190905606

• Machinery & Accessories • Previous Articles     Next Articles

Automatic generation algorithm for pattern processing codes of quilting machines

LI Liang, NI Junfang()   

  1. School of Mechanical and Electrical Engineering, Soochow University, Suzhou, Jiangsu 215021, China
  • Received:2019-09-24 Revised:2020-08-07 Online:2020-11-15 Published:2020-11-26
  • Contact: NI Junfang E-mail:jfni9999@sina.com

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Abstract:

In order to simplify the pattern design process with the quilting machines, to reduce the influence of operators' experience and to achieve the effect of the real-time quilting, this research worked on the automatic generation of pattern codes. The target quilting pattern is pre-processed and edge-extracted, and the contour tracking algorithm was used to segment the image into several ordered point-chain contours. The genetic algorithm was used with the line and arc as base processing elements and the first-order continuous continuity as constraint condition, to fit each outline contour to carry out simulation machining. Programming verification was carried out to prove the reliability of the result by MatLab. The results show that the constraint error function is able to avoid the influence of the trimming and stitch skipping caused by the discontinuity of the endpoint. The fitness of optimal processing path of each generation is gradually improved by the action of the genetic operators. The total error and the number of fitting segments are smaller. The pattern simulation processing satisfies the requirements of good real-time performance, high efficiency, high degree of reduction and the needs of quilting manufacturing requirements of complex patterns in practice.

Key words: quilting machine, pattern generation algorithm, contour tracking, genetic algorithm, curve fitting, simulation processing

CLC Number: 

  • TS391

Fig.1

Image preprocessing"

Fig.2

Singular points"

Fig.3

Example of contour tracking algorithm. (a) Test bitmap image;(b) Segmentation results"

Fig.4

Flow chart of contour tracking algorithm"

Fig.5

Base processing element fitting result"

Fig.6

Optimal processing path"

Fig.7

Optimal fitness of each generation"

Fig.8

Quilting machine simulation processing"

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