Design of a continuous and stable feeding system for cut tobacco storage cabinet

In order to solve the problems of poor continuity, unstable flow and low automation in the feeding process of traditional cut tobacco storage cabinets, a continuous and stable feeding system based on feed-forward and feed-back control mode is proposed in this paper, the system is composed of quantitative device, cut tobacco stock sensor, volume flow sensor, controller, frequency converter, bottom belt motor, etc. Through the flow disturbance judgment algorithm, the storage of high and low cut tobacco levels in the storage cabinet can be predicted, and effective feed-forward control strategy can be adopted in time to control the frequency conversion of the bottom belt of the storage cabinet, so as to greatly reduce the impact of high and low cut tobacco levels in the storage cabinet on the stability of feed flow; Through the comparative analysis of the detection signals of the cut tobacco stock sensor and the volume flow sensor, the controller timely adopts an effective feed-back control strategy to control the frequency conversion of the bottom belt motor and other belt motors, so that the feeding flow of the storage cabinet tends to be consistent with the set flow value. The feed-forward and feed-back control system works in coordination and complements each other, it effectively improves the stability, continuity and automation level of the cut tobacco supply flow. The production data shows that the average value of CPK(Process capability index) has increased by 14.88, the average value of range has decreased by 96.91%, and the average value of standard deviation has decreased by 97.14%.