Abstract: Loom’s winding system has a great impact on fabric tension. Fabric will become wrinkle when the fabric tension is small; fabric will be stretched and deformed when the tension is too large, which may do damage to fabric. This paper makes mechanical analysis on two different winding systems of loom. According to the mechanical model got from mechanical analysis, a further research is made on the control strategy which is adaptive. By utilizing the BP neutral network theory to improve the performance of traditional PID control algorithm, the constant tension control is achieve. The results of simulation prove that the constant tension control could improve the quality of fabric.

Key words: loom, roll-up mechanism, tension control, neutral network, PID control algorithm