Abstract: In some concentrators, the ore size distribution is uneven, and the water content fluctuates greatly, Large time delay and unstable time delay of ore feeding feedback of multi vibration feeder ; Based on large interval sampling integral control and fuzzy PID constant ore feeding control system is designed and developed to achieve constant control of the mill feed rate. The system runs reliably and has strong anti-interference ability, which improves the automation level of the equipment and the production efficiency of the mill.