Abstract:In order to solve the problems of ghosting, wrinkling and even broken paper in domestic intermittent rotary press, the working principle was analyzed in detail by combining theory with practice, and the main reason affecting the printing quality was determined to be the asynchronism of multi-axis rotation of the transmission system. The fuzzy PID composite control algorithm was designed in which fuzzy control, fuzzy adaptive PID control and linear superposition of the two controls could be automatically selected according to the range of deviation. The experimental results show that the response speed, stability and printing accuracy of the system are greatly improved, and the phenomena of ghosting, wrinkling and paper breaking are disappeared. The algorithm has been put into use, and the printing machine with the algorithm runs stably and reliably. The printing effect is far better than the traditional PID control, which meets the operating requirement.