Research on tension control technology of warp netting machine
                                                                   WANG Fei, GU Jinan, TANG Shixi
                                (Research Center of Mechanical Information, Jiangsu University, Zhenjiang 212013, China)

Abstract: Aiming at the difficulties in parameter setting and weak antiinterference ability in tension control system of warp netting machine, a fuzzy PID control method was applied. The multivariable, nonlinear and timedelay aspects of tension control system were researched. The mathematical model of the warp tension of warp netting machine and the main influencing factors of the tension fluctuation were analyzed. After the membership function and fuzzy control rule table were determined, the conventional PID control and fuzzy control were combined effectively, and the simulations of which were established by Matlab Simulink module. Finally, this control method was applied to winding and unwinding system for testing the function of this control system. The experimental result shows that the method which was based on the fuzzy PID control can improve the response speed and antiinterference of the tension control system, and the steady state can be rapidly restored after being disturbed so as to realize the stable control of the warp netting machine.

Key words: fuzzy PID; net machine; tension control