Peristaltic pump flow control system based on LabVIEW fuzzy PID controller

Abstract

The invention relates to a peristaltic pump flow control system based on a LabVIEW fuzzy PID controller. The peristaltic pump flow control system comprises a drive circuit, a peristaltic pump, a flow sensor, a data collection card, an A / D converting circuit, a fuzzy PID controller, a D / A converting circuit, a single-chip microcomputer, and a display screen. The output end of the drive circuit is electrically connected with the peristaltic pump. The output end of the peristaltic pump is connected with the input end of the flow sensor. The output end of the flow sensor is connected with the input end of the data collection card. The output end of the data collection card is connected with the input end of the A / D converting circuit. The output end of the A / D converting circuit is connected with the input end of the fuzzy PID controller. The output end of the fuzzy PID controller is connected with the input end of the D / A converting circuit. The output end of the D / A converting circuit is connected with the input end of the single-chip microcomputer. The output end of the single-chip microcomputer is connected with the drive circuit. The fuzzy PID controller is connected with the display screen through a line. A LabVIEW software system is embedded into the fuzzy PID controller. The peristaltic pump flow control system can improve a flow control effect, the overshoot amount of the system is obviously reduced, the flow control precision is obviously improved, and a defective rate is obviously reduced.

Description

[technical field] [0001] The invention relates to the technical field of peristaltic pump flow control, in particular to a peristaltic pump flow control system based on a LabVIEW fuzzy PID controller. [Background technique] [0002] Flow rate is the primary control factor in chemical, pharmaceutical engineering and other industries and material laboratories. The flow rate and speed of dropping reagents determine the final results of production and experiments. Therefore, the accuracy of flow rate during production, processing or experimentation must be regulated. . Traditional peristaltic pump control methods mainly use mechanical control, which cannot achieve quantitative control of flow rate and size, let alone make more accurate output, which has great limitations for scientific research and enterprise production. Therefore, it will be of great significance to provide a peristaltic pump flow control system and method that can significantly improve flow control accuracy. ...

AI Technical Summary

Problems solved by technology

Traditional peristaltic pump control methods mainly use mechanical control, which cannot achieve quantitative control of flow rate and size, let alone make more accurate output, which has great limitations for scientific research and enterprise production.

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