A new fiber winding precisiong tension control system

Winding molding is a commonly-used molding method for composite fiber materials, in which the fiber winding tension is an important parameter, since the winding tension directly influences the quality of winded products, making winding tension control a key technique in fiber winding. A new type closed-loop tension control system, with PLC as the main controller, the industrial control computer as the upper-host, alternating numeric servo-electromotor and air cylinder as the actuators, equipped with the angle sensor of real time feedback filament tension change is designed. On the basis of study on the swing bar, the mathematical model of the scheme is established. Tension control in the fiber winding process is validated, combined with NC winding machine. Experimental results proved that the principle of the design scheme is right with tension deviation less than 4 per, response time about 0.35 s and thus well meets the requirements of the system.