Abstract:

Tension control of carpet Tufting loom yarn is a key factor of the jacquard quality. For the effective control of it, the text focuses on the impact of stepper motor’s input for the jacquard yarn tension variations. Firstly, dynamic model of the stepper motor jacquard device is created and the correspondence between the input angular frequency and the output torque is analyzed; According to the improved Euler equation, the yarn dynamic tension model is established in which the section of yarn is around the jacquard roller；Meanwhile，further analyze the mathematical model of the stepper motor and the yarn dynamic tension model of the jacquard device. In the different initial conditions of T0，Jacquard roller radius r，center distance l，yarn wrap angle and so on, by the method of Iteration – Euler to analyze its value changes, the quantitative relationship between the input angular frequency and the output yarn tension is derived and the effect of different corners to the dynamic tension of the yarn is researched，which is a reference to the manufacturing and research of different high pile tufted carpets and even the full-scale jacquard tufted carpet.

Key words: tufted carpet, jacquard device, yarn tension, stepper motor, Iteration-Euler