Construction and analysis of yarn tension model in the process of electromagnetic weft insertion

Abstract In recent years, electromagnetic weft insertion has been widely studied due to its excellent speed controllability and low energy consumption. However, the yarn tension in the process of electromagnetic weft insertion is affected by many factors. In order to improve the fabric quality, this study takes three typical yarns, which are wool yarn, cotton yarn, and nylon yarn, as examples to study the yarn tension in the process of electromagnetic weft insertion and explore the variation rules of yarn tension under different materials and different weft insertion speeds. When constructing the yarn tension model, the Levenberg–Marquardt algorithm in ORIGIN software is used for data fitting. The experiment shows that the yarn tensions of the three materials all have maximum values and change positively with the weft insertion speed. In addition, this study establishes a yarn tension model, whose R 2 value exceeds 0.95, indicating a good model fitting effect. And the relationships between the maximum value, average value, standard deviation of tension, and speed are iterated respectively, providing a theoretical basis for the establishment of electromagnetic weft insertion strategies and optimal control.