Design of automatic control system of self-leveling cement mixing device based on PLC

In order to improve the production efficiency of self-leveling cement, an automatic control system of self-leveling cement mixing device based on PLC was developed. The self-leveling cement mixing device is controlled by PLC and HMI touch screen. With the weight sensor as the measuring element, the error between the measured flow data and the set value as the input, and the motor speed of the screw conveyor as the output, the automatic control of the loading process of the self-leveling cement mixing device is realized by PID control algorithm, which ensures the precise dosing of the self-leveling cement. The experiment shows that the system can effectively realize the batching and mixing of self-leveling cement, ensure the batching ratio of self-leveling cement in large area construction, and the overshoot is small, and has good anti-interference ability.