In many sectors of industrial production, often encounter winding control problems. Such as paper, textiles, plastic film, wire, printed matter, magnetic tape, metal tape wire and other production processes, tape or wire unwinding, winding tension on the quality of the product is critical, for which the requirement of constant tension control, that is, in the process of winding so that the product is subjected to the optimal tension, and from start to finish to maintain the same. If the tension is too large, it will cause tensile deformation of the processed material; if the tension is too small, it will deform the stress between the layers of the coiled material, resulting in untidy winding and affecting the processing quality. In the strip winding system, the tension control system occupies an important position, and it is quite complex.