Abstract:

To solve the problems of fluctuation and overshoot and poor response characteristics of tentering system tension and arm swing, the fuzzy-PID control algorithm to achieve the tension stability of stentering tension and needle plate chain and high tracking accuracy of Swing arm fabric edge. The results showed that The Fuzzy-PID control algorithm can effectively improve the dynamic characteristics of stentering system.The overshoot of stentering tension is less than 0.5KN, and the adjust-time decreased from 11.9s to 6.8s, and the stentering tension stabilized at 87±1KN.After a disturbance the needle plate chain tension can return to steady state in only 2 second and does not produce the premise of overshoot.The following system of swing arm position will not cause overshoot and it will response quickly.Using Fuzzy-PID control algorithm can reduce the fluctuations and overshoot of the tension and the swing arm position, and improve the dynamic response and steady state characteristics of stentering system.

Key words: wide heat-setting machine, stretching control system, fuzzy-PID, dynamic response