Abstract: Tension control is a key technology in automated production lines for paper, plastics, and textile industries. This paper, based on the actual wallpaper production process, developed a PC-based tension control system. Actual production operation has proven that the system offers stable tension control, good real-time performance, and reliable operation, achieving optimal control of the wallpaper production process. Keywords: PC; linear velocity; tension control; stability 1. Introduction With the continuous development of computer control technology, traditional relay control and discrete device control systems are inevitably being replaced by new computer control technologies. The rich computer languages ​​of PCs are used for programming, replacing the complex point-to-point connection methods of relay control and analog systems. In the tension control process of paper production, a PC is used to control the tension, while ABB's DCS500 DC driver is used to control the synchronous speed regulation of multiple motors in the production process. This fully demonstrates the advantages of the PC and the characteristics of the fully digital driver, thus organically combining the entire production process and realizing the automation of the wallpaper production process, reflecting the excellent characteristics of computer control technology. 2. Wallpaper Production Process Requirements The wallpaper production process is shown in Figure 1. The production process is as follows: The paper roll to be printed is manually placed onto the unwinding shaft, and compressed air is used to press the paper roll firmly onto the unwinding shaft. After being guided, the paper is introduced between the printing roller and the rubber roller. Through the rolling action of the printing roller and the rubber roller, the pre-designed pattern is printed onto the paper strip. The paper strip is then conveyed by a traction motor and introduced into an oven for drying. Finally, it is wound up by the rewinding shaft. For details, please click: PC-based Tension Control System