  In agriculture, crops need to apply pesticide spraying flow control precisely
to reduce costs, protect the environment, and increase yield production.
Although there have several variable control methods for spraying flow control
because indirect control flow techniques and having a slow response could cause
inaccuracy and mismanagement, also noted that those systems also suffer from
complicated design and debugging, etc. In this paper, an embedded design of the
fuzzy PID variable spraying control method is adopted. The experimental results
show that the overshoot of Proportional Integral Derivative (PID) control is
10.76%, and the overshoot of fuzzy PID control is 7.17% which can meet the
requirements of an advanced spray control flow system. For further
investigation, a novel spray flow control method based on Programmable Logic
Control (PLC) is proposed in this paper.
