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Article http://dx.doi.org/10.26855/ea.2023.04.008

Modelling and Control of a Compact Variable Rate Spaying System

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Hongyu Zheng*, Na Guo

Intelligent Manufacturing College, Huanghuai University, Zhumadian, Henan, China.

*Corresponding author: Hongyu Zheng

Published: June 12,2023

Abstract

The main objective of this research is to development a compact, economic variable rate spraying system for the majority of Chinese farm with small size field. A pressure-based variable rate spaying system was developed and adapted to a commercial boom sprayer 3W-250 in order to control the spraying rate by regulating the electric regulating valve in bypass pipe and adjust the spray width by shutting on/off the solenoid valves in each boom section. A model-based Smith predictor was combined with the fuzzy self-tuning PID controller for regulating the spray rate to overcome the detrimental effect of long time-delay. The system was tested to evaluate the effectiveness and performance on the road. The results indicate that the variable rate spraying system has very good dynamic response and high application accuracy for variable rate spraying and boom section control, and it has the ability to maintain the desired spray rate while the engine rotational speed fluctuates with the groundspeed in the field.

Keywords

Precision agriculture, variable rate spraying, graph theoretic spraying model, fuzzy self-tuning PID, Smith predictor

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How to cite this paper

Modelling and Control of a Compact Variable Rate Spaying System

How to cite this paper: Hongyu Zheng, Na Guo. (2023). Modelling and Control of a Compact Variable Rate Spaying System. Engineering Advances3(2), 117-123.

DOI: http://dx.doi.org/10.26855/ea.2023.04.008