Research on fruit-bag machine tension control system based on fuzzy algorithm

Tension control system is a key technologe for fruit bag machine, because it impacts quality the fruit bags. Because of high productivity and high-speed paper driving, in odrder to prevent the paper from wrinkling, drifting, deviator and to keep the neat of the paper, the control method that based on fuzzy parameters adaptive PID is presented for the fruit bag machine. The simulating results of ordinary PID and fuzzy parameters adaptive PID under the condition of step signal show that the fuzzy parameters adaptive PID has fast response, small overshoot, high precision. The adjustment time is improved greatly. Both theoretical analysis and system´s practical running results show that fruit bag machine can automatically adjust deviator location according to roll material´s size.