The detection and control of tape deviation in winding process

In the winding process, the tape always has a lateral shift along the mandrel due to various reasons. Thus, a straight-line running cannot be maintained. If effective measures are not taken in time, the tape deviation will result in the phenomenon of corrugation and crinkling. Additionally, it would influence negatively on the precise control of tension and the quality of wound products. The tape-edge detection method, based on the charge coupled device (abbreviated as CCD) linear image sensor, is proposed to detect the deviation amount. With regard to the characteristics of PID controller and Fuzzy controller, the combined controller of Fuzzy-PID is raised. According to simulations and experiments, the effect of Fuzzy-PID controller is obviously better than that of PID controller or Fuzzy controller. By presenting the detection and control techniques for the tape deviation, the automatic rectification is achieved, the consecution and the automation degree of winding process is improved as well. Therefore, the quality of wound products is guaranteed.