Semi servo baby diaper machine is a kind of equipment for the production of baby diapers, and its control system adopts semi-servo technology. There is a certain relationship between the output signal and the input signal of this model, but it cannot achieve complete positioning or speed control. Semi-servo diaper machines are usually equipped with drives and sensors to provide feedback signals. Compared with the full servo system, the semi-servo diaper machine has the advantages of lower cost, relatively easy installation and maintenance.