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Abstract
In order to control the liquid level in the chemical production process, a PID control theory algorithm is proposed. Firstly, by constructing a double-capacity water tank liquid level control system, the mathematical model of the double-capacity water tank was deduced and constructed through many experiments. The simulation was carried out by Matlab Simulink software, and the dynamic and static characteristics of the double tank water level control system were analyzed based on the simulation results. The Labview software was used to write the algorithm of the double tank water level control system. The USB-6008 data acquisition card and the DAQ data acquisition assistant were used to complete the connection of the experimental hardware and software. The actual liquid level curve was obtained through experiments. The experimental results show that the designed system can keep the liquid level of the lower tank of the double tank level within the set value, and the floating does not exceed 5%, which achieves the predetermined steady state effect.
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Details
1 School of Mechanical Engineering, North University of China, Taiyuan, Shanxi, 030051, China