Roller control system of fabric printing machine

The invention discloses a roller control system of a fabric printing machine. The system uses a single-chip for controlling the output voltage of a rectified three-phase circuit and adjusting the rotating speed of a direct-current motor for driving a roller of a printing machine to achieve the speed adjustment of the roller; meanwhile, a generator coaxial with the direct-current motor detects the rotating speed of the roller; the detected rotating speed value is converted to the digital quantity in a form of voltage through ADC analog-digital conversion to the single-chip; and the feedback adjustment is performed according to the set rotating speed of the system so as to realize the closed-loop control of the roller of the printing machine.