Design of a Constant Flow Control System for Cut Tobacco Feeder

Abstract

The speed control of the climbing belt motor of the cut tobacco feeder does not match the demand of the cut tobacco feeding flow, and there are a series of problems such as large fluctuation of the mass flow, cut tobacco shortage, cut tobacco blockage, climbing belt motor start or stop frequently, large equipment loss and energy consumption. An improved speed control method of the climbing belt motor is proposed to solve the above problems. Firstly, the relationship between motor frequency and mass flow is modeled and analyzed; Then, a reasonable frequency modulation control logic is proposed; Finally, the model and control logic are verified and further improved based on production data. The experimental results show that: After improvement, the average starting or stopping times of the motor are reduced by 98.61%, the average high-frequency triggering times are reduced by 96.48%, and average value of flow range in the head stage is reduced by 75.78%. While improving the stability of the cut tobacco mass flow, the stability of the climbing belt motor has also been greatly improved, which not only eliminates the hidden danger of cut tobacco shortage and blockage, but also reduces the equipment loss and energy consumption.