ابداع و بهینه سازی یک مکانیزم جدید محرک سوزن در ماشین های دوخت با استفاده از الگوریتم ژنتیک

نویسندگان

دانشگاه یزد

چکیده

مسأله طراحی ماشین دوخت به دلیل وجود مکانیزم های پیچیده و جواب های طراحی متعدد، جزء مسائل مشکل به شمار می رود. بدون شک کیفیت دوخت در این ماشین ها تا حد زیادی متأثر از پارامترهای مکانیزم محرک سوزن است. با توجه به تأثیر سرعت سوزن در محدوده نفوذ در پارچه بر نیروی تماس و حرارت ایجاد شده در سوزن، استفاده از یک مکانیزم محرک بهینه از اهمیت ویژه ای برخوردار است. متأسفانه علی رغم اهمیت این موضوع از دید عملی، تحقیقات زیادی در این راستا صورت نگرفته است. لذا در این مقاله، ابتدا به معرفی یک مکانیزم جدید محرک سوزن پرداخته شده است. سپس، مراحل بهینه سازی آن برای دستیابی به سرعت بهینه سوزن با استفاده از روش تکاملی الگوریتم ژنتیک به تفصیل بیان گردیده است. در ادامه، با اصلاح تابع هدف، تغییرات شتاب سوزن (جرک سوزن) به منظور کاهش لرزش های نامطلوب و حرکت یکنواخت سوزن کمینه شده است. نتایج حاصل از این تحقیق در مقایسه با تحقیقات دیگر، مؤید دستیابی به سرعت و جرک بهینه سوزن با استفاده از این مکانیزم جدید می باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Optimization of a New-developed Needle Drive Mechanism in Sewing Machines using the Genetic Algorithm

چکیده [English]

The problem of designing sewing machines is known as a difficult task due to the existence of complex mechanisms and various solutions. The stitch quality in these machines is certainly most influenced by the effect of parameters of the needle drive mechanism. The needle heat generated during sewing process as well as the needle contact force are directly related to needle velocity in penetration zone which in turn depends on the needle driver mechanism of sewing machine. Unfortunately, despite the importance of this issue from practical point, very little publications have focused especially on the optimization of needle lever mechanism. Therefore, we first introduce a new needle derive mechanism for which an optimization procedure based on the genetic algorithm is followed to achieve minimum needle velocity during penetration. In addition, further modification of the objective function with respect to the variation of needle acceleration is applied to assure smooth movement of the needle during sewing process.

کلیدواژه‌ها [English]

  • needle velocity
  • sewing machine
  • Optimization
  • Genetic algorithm
  • slider-crank mechanism
 

[1] Mallet, E., Ruxu, D. (1999). “Finite Element Analysis of Sewing Process”. International Journal of Clothing Science and Technology, Vol. 11, pp. 19-36.

[2] Xidong, C., Yingyi, J. (1997). “Drawing Press with Intermittent Mechanism Optimization Design and the Vector Triangle Method”. Journal of Tianjin College of Light Industry, pp. 28-33.

[3] Rao, A. (1980). “Optimum Synthesis of a Slider‐Crank Mechanism Using Geometric Programming”. International Journal for Numerical Methods in Engineering, Vol.15, pp. 1595-1602.

[4] Yupeng, H., Sheng ,T., Jun, W. (2004).“ Numerical Simulation of Low-speed Stamping-punch Characteristics of Mechanical Press”. First Forging Equipment Manufacturing Technology Forum, Eight  Session of the Academic Research of the Forging Equipment Committee and Product Information Exchange Conference. Guangzhou, pp. 88-89.

[5] Lin, J.,  Huang, M. (2005) “Dimension Synthesis for Higher-Order Kinematic Parameters and Self-Adjustability Design of Planar Linkage Mechanisms”.ASME  International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, California, USA, September 24–28.

[6] Kostić, M., Čavić, M., Zlokolica, M. (2007). “About Optimal Synthesis of Complex Planar mechanism”. 12th IFToMM World Congress, Besançon (France), June18-21.

[7] Gotlih, K. Lojen, D.Z. Vohar, B. (2007). “Optimisation of Needle Penetration Velocity Using the Link Drive Mechanism in a Sewing Machine”. Fibres and Textiles in Eastern Europe,Vol. 15, pp. 66.

[8] Zhao, Y., Qi, R., Zhao, Y. (2009). “Dimensional Synthesis of a Slider-Crank Mechanism Based Heavy-Load Positioner”. International Conference on Measuring Technology and Mechatronics Automation. ICMTMA'09, Zhangjiajie, Hunan, April 11-12.

[9] Erkaya, S., Uzmay, İ. (2009). “Optimization of Transmission Angle for Slider-Crank Mechanism with Joint Clearances”. Structural and Multidisciplinary Optimization, Vol. 37, pp. 493-508.

[10]­ Qu, E.G., Zhang, H.P. (2012). “Optimization Design and Motion Simulation of Offset Slider-Crank Mechanism”. Advanced Materials Research, Vol. 403,  pp. 4216-4220.

[11] Kao, C.C. (2012). “Optimal Design and Control of a Slider-Crank Mechanism System”. Advanced Materials Research, Vol. 487, pp. 608-612.

[12] Wu, Y., Zhou, X. (2012). “Modeling and Optimization Research of a Planar Six Bar Mechanism”. Applied Mechanics and Materials, Vol. 215, pp. 921-925.

[13] Sun, W., Wang, S.m., Ren, T., Qu, W.T.  (2013). “Static Analysis and Optimization of the Slide’s Structure of Slider-Crank Type Cluster well Pumping Unit (SCTCWPU)”. Advanced Materials Research, Vol. 694, pp. 284-287.

[14] Wang, X. (2013). “The Optimization Design of Six-bar Linkage Mechanism”. TELKOMNIKA Indonesian Journal of Electrical Engineering, Vol. 11, pp.4091-4098.

[15] Ebrahimi, S., Payvandy, P. (2013). “Optimization of the Link Drive Mechanism in a Sewing Machine Using Imperialist Competitive Algorithm”. Accepted for publication in the "International Journal of Clothing Science and Technology".

[16] Hurt, F.N., Tyler, D.J. (1973). “Influence of Fabric Finishing Conditions on Sewing Needle Temperature''. Clothing Research Journal, Vol. 1, pp. 47–52.

[17] Qinwen, L., Evangelos, L., Hui-Jun, Z., Du, R. (2001). “A Study on the Needle Heating in Heavy Industrial Sewing - Part 1: Analytical Models”. International Journal of Clothing Science and Technology, Vol. 13 pp. 87-105.

[18] Qinwen, L., Evangelos, L., Dan, S., Du, R. (2001). “A Study on the Needle Heating in Heavy Industrial   Sewing - Part 2: Finite Element Analysis and Experiment Verification”. International Journal of Clothing Science and Technology, Vol. 13 pp. 351-367.

[19] Mccell, J. (2005). “Genetic Algorithm for Modeling and Optimization”. Journal of Computational and Optimization, Vol. 184, pp. 205-222.

[20] Haupt, R. L., Haupt, S.E. (2004), “Practical Genetic Algorithms”. John Wiley & Sons, Second Edition.