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: The economy of Bangladesh is largely depending on textile and garments industries at this moment. In this industry the overall demand of quality and cost reduction is increasing constantly along with steadily growing production capacities. For these reasons backward linkage industry like spinning plays a vital role for sustainable textile product...
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... is a significant property of yarn which helps the spinners to take decision for the assumption of the quality of yarn. It is seen from Fig 7that unevenness percentage is the lowest in 900 m/min speed and all system C which is the adapter made from nylon and small diameter among three. It may be assumed that due to the groove in nylon adapter which absent in mild steel adapter and surface is plain gripping is better in small diameter adapter and unevenness properties becomes lower. ...
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... Nowadays, the textile business creates a lot of employment though it faces massive competition and pays a certain amount of tax to machine producers. The clothing industry largely depends on traditional ring spinning systems for yarn [1]. Cotton fiber spinning has three different spinning systems available: conventional ring sinning system, openend spinning system, and Murata Vortex spinning [2]. ...
Blending fibers to produce yarn is more popular nowadays due to its quality and processing performance in the following stages. In addition, the properties of fabric made from blended yarn also become better than that of conventional ring-spun yarn. Furthermore, the popularity of blended yarn is increasing day by day, though there exist various yarns produced from numerous new along with modern spinning systems. Vortex spinning is a modern spinning system, and it has brought a revolutionary change in yarn properties in terms of hairiness handling compared to conventional ring-spun yarn. In this work, three yarns of a count of "30's Ne" count were produced by blending cotton-polyester fiber in a conventional ring and air vortex spinning system as well as cotton-flax fibers in a ring spinning system. During the work, the blending ratio was kept constant (60/40). Fiber properties were tested by High Volume Instrument (HVI) and Advanced Fiber Information System (AFIS). After getting yarn from ring and Murata vortex, spinning system properties were tested by Auto sorter, Electric Twist Tester Mag-YOY52, Uster Evenness Tester 6, Automatic wrap reel, Electronic Lea Strength Tester, (Model: TYT-03C), and Mesdan Strength tester AUTODYN 300. All yarn properties were analyzed by One way of ANOVA. It has been found that cotton-polyester blend yarn produced in ring spinning systems is superior in quality over others because it has better irregularity %, IPI, CSP, tenacity, and elongation. On the other hand, the vortex produced yarn with low hairiness compared to others.
A conical winding formation and tension control system was proposed in the doubling operation based on the yarn guide mode of a single spindle in this study. Conical winding formation realized the radial unwinding of wound package. An overfeed mechanism was introduced to achieve closed-loop control of yarn tension. The overfeed wheel was driven by a brushless Direct Current motor. The tension control system combined a Proportion Integration Differentiation controller with a radial-basis-function neural network, whose purpose was to meet the control requirements of the brushless DC motor. This system consisted of three main steps: Firstly, the radial-basis-function neural network was used to identify the system online. Secondly, the gradient descent method was used to adjust the node weight, center vector, and baseband width. Finally, incremental PID parameters online were adjusted according to the identified Jacobian information. A mathematical model of a control system was established in Matrix Laboratory. An experimental platform was designed for doubling winder to compare the control effects of Radial-basis-function-PID with traditional PID. The simulation results showed that the RBF-PID had a smaller overshoot of yarn tension, shorter adjustment time, and smaller steady-state error compared with the traditional PID controller in doubling operation by simulating the mathematical model. Experimental results showed the RBF-PID controller had good performance and stability and could be applied to yarns with different average linear velocity, yarn counts and strands . The yarn tension fluctuation will not exceed ±3% of the target value when the experimental materials and the cone angles are unchanged.
